KNEE PAIN
A 16-year-old male basketball player presents with anterior knee pain that worsens when he sits for prolonged periods ("theater sign") and when climbing stairs. He denies trauma, swelling, or mechanical symptoms. Which historical feature most strongly supports a diagnosis of patellofemoral pain syndrome?
A. Pain with prolonged sitting with knees flexed
B. Presence of joint effusion
C. History of twisting injury with immediate swelling
D. Night pain unrelieved by position change
E. Pain radiating below the knee to the ankle
Answer: A. Pain with prolonged sitting with knees flexed
Explanation : Patellofemoral pain syndrome (PFPS) is characterized by anterior knee pain aggravated by activities that increase patellofemoral joint loading, including squatting, running, stairs, and prolonged sitting with knees flexed (the "theater sign").
The absence of effusion, trauma, or mechanical symptoms helps distinguish PFPS from meniscal or ligamentous injuries. Night pain unrelieved by position (D) or radiation below the knee (E) would raise concern for alternative pathology such as tumor or referred pain.
Clinical Pearl: In adolescents with anterior knee pain, PFPS is the most common diagnosis; the combination of activity-related pain, absence of effusion, and aggravation by stair climbing or prolonged sitting is highly characteristic.
A 28-year-old contact lens wearer presents with a 2-day history of left eye pain, redness, and photophobia. She reports sleeping in her lenses and using tap water to rinse them. Which historical element most significantly increases her risk for a vision-threatening infection requiring urgent referral?
A. Duration of symptoms less than 72 hours
B. Use of daily disposable lenses
C. Exposure to tap water
D. Absence of systemic fever
Answer: C — Exposure to tap water
Explanation: The July 2026 AFP article identifies contact lens wear as a major risk factor for bacterial and Acanthamoeba keratitis.
Acanthamoeba keratitis is strongly associated with exposure to tap water, hot tubs, or swimming while wearing lenses. While bacterial keratitis is more common, Acanthamoeba infection is particularly devastating and requires urgent ophthalmology evaluation. Daily disposable lenses (B) actually reduce risk compared to extended wear. Duration of symptoms (A) and absence of fever (D) do not reliably distinguish severity.
Clinical Pearl: Always ask contact lens wearers about water exposure—this single historical element should lower your threshold for urgent referral even with seemingly mild initial findings.
A 45-year-old patient with prediabetes asks about dietary changes to prevent progression to type 2 diabetes. According to the 2025–2030 Dietary Guidelines for Americans, which recommendation is most aligned with evidence-based prevention strategies?
A. Adopt a ketogenic diet with <20g carbohydrates daily
B. Prioritize whole grains, vegetables, fruits, and limit ultra-processed foods and added sugars
C. Increase protein intake to 2.0 g/kg/day primarily from red meat sources
D. Eliminate all dairy products to reduce saturated fat intake
Answer: B- Prioritize whole grains, vegetables, fruits, and limit ultra-processed foods and added sugars
Explanation: The 2025–2030 guidelines emphasize dietary patterns rich in whole grains, vegetables, and fruits, advising to avoid highly processed packaged and preprepared foods— the first time such guidance has been included.It maintains the recommendation to limit added sugars to <10% of daily calories.While the guidelines increased protein recommendations to 1.2–1.6 g/kg/day, they do not endorse ketogenic diets or unlimited red meat consumption.The dairy guidance now favors full-fat dairy without added sugars rather than elimination.
Clinical Pearl: When counseling patients with prediabetes, frame the guidelines' "avoid ultra-processed foods" message as actionable steps—replacing packaged snacks with whole food alternatives—rather than abstract restrictions. The Diabetes Prevention Program demonstrated a 58% reduction in T2D risk with intensive lifestyle intervention, supporting pattern-based approaches over single-nutrient focus
A 22-year-old college student presents for a wellness visit. He reports smoking cannabis daily for the past 2 years to "relax" and admits he has tried unsuccessfully to cut back multiple times. He denies other substance use. Which screening tool is most appropriate to assess for cannabis use disorder in this primary care setting?
A. CAGE questionnaire
B. Single-Item Screen–Cannabis (SIS-C)
C. AUDIT-C
D. DSM-5-TR criteria checklist administered in full
Correct answer: B- Single-Item Screen–Cannabis (SIS-C)
Explanation: The Single-Item Screen–Cannabis (SIS-C) asks, "How many times in the past year have you used cannabis?" with a cutoff of ≥1 indicating need for further assessment. A 2022 diagnostic study in JAMA Network Open found the SIS-C had excellent sensitivity and negative predictive value for detecting CUD in routine primary care, making it efficient for busy family medicine practices. The CAGE (A) screens for alcohol use disorder; AUDIT-C (C) is alcohol-specific; and while DSM-5-TR criteria (D) define CUD, they are not screening tools.
Clinical pearl: Integrate SIS-C into annual wellness visits for adults aged 18 years and older, per USPSTF recommendation for unhealthy drug use screening
A 45-year-old Spanish-speaking patient with limited English proficiency presents for a routine diabetes follow-up. When offered a professional interpreter, she declines and asks her adult daughter to interpret. What is the most appropriate next step?
A. Proceed with the daughter as interpreter to respect patient autonomy
B. Decline the daughter and insist on a professional interpreter
C. Explore the reason for refusal, explain that interpreter services are free and confidential, and document the encounter
D. Reschedule the appointment until a professional interpreter is available
Answer: C- Explore the reason for refusal, explain that interpreter services are free and confidential, and document the encounter
Explanation: The 2026 AFP guidance recommendation emphasizes that when a patient declines an interpreter, clinicians should first explore the reason for refusal—which may include cost concerns, privacy worries, or prior negative experiences. Clarifying that services are free and confidential may address underlying concerns. If the patient persists after this discussion, the clinician may proceed with the family member while documenting the offer, refusal, and rationale. Simply proceeding (A) misses an opportunity to educate; insisting (B) violates autonomy; rescheduling (D) is unnecessary for a routine visit when alternatives exist.
Clinical Pearl: Documentation should include: (1) language identified, (2) interpreter offered, (3) patient declined with explanation, and (4) alternative communication method used
A 45-year-old woman presents after an acute twisting injury to her right knee. She reports immediate swelling and inability to bear weight. On examination, she has medial joint line tenderness. Which combination of physical examination findings would most accurately diagnose a medial meniscal tear?
A. Joint line tenderness alone
B. McMurray test alone
C. Joint line tenderness plus McMurray test
D. Anterior drawer test plus Lachman test
E. Patellar apprehension test plus Q-angle measurement
Answer: C. Joint line tenderness plus McMurray test
Explanation: Individual provocative tests alone are not sufficient to reliably diagnose knee pain conditions; a combination of tests is preferred to increase accuracy. For meniscal tears, joint line tenderness has high sensitivity (83%) but low specificity, while the McMurray test has high specificity (84%) but lower sensitivity (61%).
Combining these tests improves diagnostic accuracy compared to either alone. The Lachman and anterior drawer tests (D) assess ACL integrity; patellar apprehension and Q-angle (E) assess patellofemoral pathology.
Clinical Pearl: When evaluating meniscal tears, clustering physical examination findings rather than relying on isolated tests reduces false positives and improves clinical decision-making before obtaining advanced imaging.
A 45-year-old woman presents with acute onset right eye pain, blurred vision, and halos around lights. Examination reveals a mid-dilated non-reactive pupil, corneal edema with a "steam-fogged" appearance, and an intraocular pressure of 52 mm Hg. Which examination finding most specifically confirms the diagnosis of acute angle-closure glaucoma?
A. Ciliary flush (circumlimbal injection)
B. Shallow anterior chamber on penlight examination
C. Fixed, mid-dilated pupil
D. Corneal epithelial edema
Answer: C — Fixed, mid-dilated pupil
Explanation: While all listed findings occur in acute angle-closure glaucoma, the fixed, mid-dilated pupil is pathognomonic for iris ischemia and represents an ophthalmic emergency requiring immediate pressure reduction and referral.
Ciliary flush (A) occurs in any anterior segment inflammation. Shallow anterior chamber (B) is a risk factor but not diagnostic. Corneal edema (D) results from acute pressure elevation but is non-specific. The pupil finding indicates compromised iris blood flow and mandates emergent intervention.
Clinical Pearl: In acute angle-closure, the pupil becomes fixed in mid-dilation because the iris ischemia paralyzes the sphincter muscle—this finding should trigger immediate same-day ophthalmology contact.
A 28-year-old pregnant patient at 16 weeks gestation follows a plant-based diet. She is concerned about meeting nutritional needs. Which guidance from the 2025–2030 Dietary Guidelines best addresses her situation?
A. Convert to an omnivorous diet to ensure adequate protein and B12 intake
B. Prioritize nutrient-dense plant proteins, fortified foods, and consider B12 supplementation under medical supervision
C. Eliminate all soy products due to phytoestrogen concerns
D. Maintain current intake without modification, as plant-based diets meet all pregnancy requirements
Answer: B- Prioritize nutrient-dense plant proteins, fortified foods, and consider B12 supplementation under medical supervision
Explanation: The 2025–2030 guidelines state that when dietary intake or absorption is insufficient, fortified foods or supplements may be needed under medical supervision—particularly relevant for older adults and, by extension, pregnant patients with increased nutrient demands. It emphasizes nutrient-dense foods including legumes and acknowledge that some individuals may need to adapt the guidelines to meet specific needs. For pregnant patients following plant-based diets, vitamin B12, iron, zinc, and choline require particular attention. The guidelines do not mandate diet conversion but support personalized adaptation.
Clinical Pearl: The guidelines removed explicit guidance on infant cereals for complementary feeding despite their importance for iron fortification—a change criticized by pediatric reviewers. Similarly, for pregnant patients, ensure choline intake (often inadequate in plant-based diets) is addressed, as the guidelines' increased protein recommendations (1.2–1.6 g/kg/day) may not fully capture micronutrient needs without intentional planning
A 28-year-old woman with major depressive disorder presents requesting help to stop using cannabis. She has used daily for 4 years and reports anxiety, irritability, and difficulty sleeping since her last use 36 hours ago. Which symptom cluster best characterizes the expected time course of cannabis withdrawal?
A. Peaks within 6–12 hours; resolves by 48 hours
B. Onset 24–48 hours; peaks days 2–6; lasts up to 3 weeks
C. Onset 72 hours; peaks at 1 week; persists for months
D. Immediate onset; peaks at 24 hours; resolves by 72 hours
Answer: B- Onset 24–48 hours; peaks days 2–6; lasts up to 3 weeks
Explanation: Cannabis withdrawal syndrome typically begins 24–48 hours after last use, peaks during days 2–6, and can last up to 3 weeks in daily or near-daily users. Core symptoms include anxiety, irritability, insomnia, decreased appetite, and restlessness. This time course distinguishes cannabis withdrawal from alcohol (A—earlier peak) or benzodiazepine withdrawal (C—later onset, prolonged course).
Clinical pearl: Withdrawal severity predicts relapse risk; addressing sleep disturbance with non-benzodiazepine strategies (e.g., mirtazapine or quetiapine off-label for symptom-targeted care) may improve retention in cessation efforts, though these medications do not reduce cannabis use itself
A 70-year-old Arabic-speaking patient with dementia and limited English proficiency is accompanied by her daughter, who requests to serve as interpreter for end-of-life care discussions. The patient appears to assent but cannot confirm understanding. What is the most appropriate course of action?
A. Proceed with the daughter as the patient appears to assent
B. Obtain a professional interpreter and assess the patient's decisional capacity separately from the daughter's involvement
C. Defer the discussion until the patient can confirm her own preferences
D. Ask the daughter to leave and use telephone interpretation alone with the patient
Answer: B-Obtain a professional interpreter and assess the patient's decisional capacity separately from the daughter's involvement
Explanation: This scenario combines three high-risk factors: (1) end-of-life decisions requiring fully informed consent, (2) cognitive impairment affecting capacity, and (3) potential surrogate decision-making where family interests may conflict with patient autonomy. The AFP guidance and ACOG 2021 emphasize that for sensitive discussions—particularly when capacity is questioned—a professional interpreter is essential to assess the patient's own understanding, separate from family influence. The daughter may remain present if the patient wishes, but the professional interpreter ensures accurate communication for capacity assessment. Proceeding (A) risks undue influence; deferring (C) may harm the patient if delay is inappropriate; excluding the daughter entirely (D) may violate patient/family preferences without assessment.
Clinical Pearl: When surrogate decision-making is anticipated, professional interpretation protects both patient and family by ensuring the patient's own values are elicited, not inferred through family translation
A 62-year-old man presents with chronic knee pain, stiffness lasting 15 minutes each morning, and crepitus on examination. He has no history of trauma. Which statement best describes appropriate imaging per current guidelines?
A. MRI is indicated to confirm osteoarthritis and guide management
B. Weight-bearing plain radiographs are required for all patients aged >45 years with knee pain
C. Imaging is not routinely needed if the presentation is characteristic of osteoarthritis
D. CT scan is preferred over radiographs to assess cartilage loss
E. Ultrasonography is first-line to evaluate for meniscal pathology
Answer: C.Imaging is not routinely needed if the presentation is characteristic of osteoarthritis
Explanation: Patients with nontraumatic chronic knee pain characteristic of osteoarthritis do not routinely need imaging.Clinical criteria (age ≥45 years, activity-related pain, morning stiffness <30 minutes, crepitus, bony enlargement) are 95% sensitive for knee OA. Imaging should be reserved for atypical presentations or worsening symptoms to detect pathology requiring surgery.MRI (A) and CT (D) are not first-line; ultrasonography (E) is not standard for meniscal evaluation.
Clinical Pearl: Overtesting with imaging in typical osteoarthritis increases healthcare costs without improving outcomes and may lead to incidental findings that prompt unnecessary interventions
A 62-year-old man with rheumatoid arthritis presents with severe, boring eye pain that worsens with eye movement and awakens him from sleep. Examination shows deep, diffuse redness that does not blanch with phenylephrine, and the sclera appears violaceous. What is the most appropriate next step?
A. Start topical corticosteroid drops
B. Order erythrocyte sedimentation rate and C-reactive protein
C. Urgent referral to ophthalmology
D. Prescribe oral NSAIDs and follow up in 48 hours
Answer: C — Urgent referral to ophthalmology
Explanation: This presentation describes scleritis, specifically anterior scleritis with deep, diffuse injection that does not blanch with phenylephrine.The severe, boring pain—often worse at night and with eye movement—distinguishes scleritis from episcleritis. The association with rheumatoid arthritis increases risk for necrotizing scleritis, a vision-threatening emergency. The article recommends urgent referral for abnormal scleral examination findings, especially with severe pain, vision loss, or systemic symptoms.
Topical steroids (A) are contraindicated without slit-lamp examination. ESR/CRP (B) may be elevated but do not change immediate management.
Clinical Pearl: Phenylephrine blanching test—episcleritis vessels blanch; scleritis vessels do not. This bedside test helps distinguish conditions with vastly different prognoses.
A 62-year-old patient with hypertension and stage 3 chronic kidney disease asks about sodium restriction. According to the 2025–2030 Dietary Guidelines, what is the most appropriate sodium recommendation?
A. <1,500 mg/day for all adults with hypertension
B. <2,300 mg/day for ages 14 and above, with consideration of individual activity level
C. No restriction needed if consuming whole, unprocessed foods
D. <1,200 mg/day for all adults over 60
Answer: B- <2,300 mg/day for ages 14 and above, with consideration of individual activity level
Explanation: The 2025–2030 guidelines specify that the general population, ages 14 and above, should consume less than 2,300 mg per day of sodium, while noting that highly active individuals may benefit from increased sodium intake to offset sweat losses. For children, age-stratified limits apply: ages 1–3: <1,200 mg/day; ages 4–8: <1,500 mg/day; ages 9–13: <1,800 mg/day. The guidelines explicitly state that highly processed foods that are high in sodium should be avoided.
Clinical Pearl: In patients with CKD stage 3, sodium restriction remains important for blood pressure control, but the <<2,300 mg/day target must be balanced against the risk of volume depletion if combined with diuretic therapy. highly active individuals may need more sodium —relevant when counseling patients transitioning between sedentary and active periods
A 35-year-old man with cannabis use disorder is considering pharmacotherapy to aid cessation. He asks about nabilone (Cesamet). Based on current evidence, which statement best describes the efficacy of cannabinoid receptor agonists for CUD?
A. Nabilone and dronabinol demonstrate consistent efficacy for achieving abstinence
B. THC preparations show no significant benefit for abstinence compared with placebo
C. Cannabidiol (CBD) is FDA-approved for CUD treatment
D. Synthetic cannabinoids are first-line therapy for CUD
Answer: B- THC preparations show no significant benefit for abstinence compared with placebo
Explanation: A 2025 Cochrane review of 37 RCTs found that Δ⁹-tetrahydrocannabinol (THC) preparations (including nabilone and dronabinol) showed no significant benefit for abstinence at end of treatment compared with placebo (RR 1.04, 95% CI 0.71–1.52; moderate-certainty evidence). While these agents may reduce withdrawal symptoms, they do not promote abstinence. CBD (C) is not FDA-approved for CUD; no pharmacotherapy has FDA approval for this indication (D).
Clinical pearl: The 2021 VA/DoD guideline and 2025 Cochrane review both conclude there is insufficient evidence to recommend for or against pharmacotherapy for CUD. Discuss experimental nature of all pharmacologic options and prioritize psychosocial interventions.
A 52-year-old woman presents with chronic low back pain for 8 months without radiculopathy. She has tried physical therapy and NSAIDs without adequate relief. Her primary care physician refers her to a pain specialist who recommends lumbar facet joint injection with local anesthetic and corticosteroid. According to the 2025 BMJ Rapid Recommendations, which of the following best describes the guideline's recommendation for this intervention?
A. Strong recommendation for; high certainty of moderate benefit
B. Weak recommendation for; low certainty of small benefit
C. Strong recommendation against; moderate certainty of little to no benefit
D. Weak recommendation against; very low certainty of harm
Answer: C- Strong recommendation against; moderate certainty of little to no benefit
Explanation: The BMJ 2025 guideline panel issued strong recommendations against joint-targeted injection of local anesthetic with or without steroids for chronic axial spine pain based on moderate certainty evidence that these procedures provide little to no difference in pain relief compared with sham procedures (weighted mean difference 0.22 cm on a 10 cm VAS, 95% CI −0.42 to 0.87). The "strong" designation reflects the panel's confidence that the desirable effects of the intervention do not outweigh the undesirable effects, including procedure burden, costs, and small but documented risks.
Clinical Pearl: When patients request or are referred for interventional procedures, shared decision-making should include discussion that major guidelines now strongly recommend against these interventions for chronic axial back pain. Consider emphasizing nonpharmacologic approaches such as structured exercise, cognitive behavioral therapy, and mindfulness-based stress reduction, which the 2024 AAFP and ACP guidelines continue to support
A 28-year-old woman sustains a direct blow to her knee during soccer. She is unable to bear weight immediately or in the emergency department. She has isolated tenderness over the patella and can flex her knee to only 80 degrees. According to the Ottawa Knee Rule, which feature would not independently indicate the need for radiography?
A. Age 28 years
B. Inability to bear weight immediately after injury
C. Inability to bear weight in the emergency department
D. Isolated patellar tenderness
E. Inability to flex knee to 90 degrees
A. Age 28 years
Explanation: The Ottawa Knee Rule specifies five criteria that indicate need for radiography: age ≥55 years, tenderness at fibular head, isolated patellar tenderness, inability to flex knee to 90 degrees, and inability to bear weight both immediately and in the ED.
Age 28 (A) does not meet the age threshold. All other options (B–E) are explicit criteria. The rule has nearly 100% sensitivity for clinically important fractures.
Clinical Pearl: The Ottawa Knee Rule reduces unnecessary radiography by 20–30% in acute knee injuries without missing clinically significant fractures; apply it systematically to all acute trauma presentations.
A 55-year-old woman presents with isolated right periorbital pain and headache. Visual acuity is 20/20 in both eyes. Pupillary reactions, extraocular movements, and external examination are normal. There is no proptosis, fever, or vision changes. What is the most appropriate next step?
A. MRI of the brain and orbits with contrast
B. CT angiography of the head and neck
C. Reassurance and symptomatic treatment with follow-up in 1 week
D. Lumbar puncture for opening pressure
Answer: C — Reassurance and symptomatic treatment with follow-up in 1 week
Explanation: This patient lacks red flags for orbital cellulitis (fever, proptosis, vision loss, restricted eye movement), optic neuritis (pain with eye movement, vision loss, RAPD), or intracranial pathology. MRI (A) and CTA (B) would be indicated for pain with eye movement suggesting optic neuritis, or with neurologic deficits suggesting aneurysm. Lumbar puncture (D) is reserved for suspected idiopathic intracranial hypertension with papilledema.
Clinical Pearl: Normal examination in isolated eye pain is reassuring—the article recommends against imaging in this scenario due to low diagnostic yield and avoiding unnecessary healthcare utilization
A 35-year-old parent of a 3-year-old asks about added sugars in their child's diet. Which statement accurately reflects the 2025–2030 Dietary Guidelines?
A. Added sugars should comprise no more than 10% of calories, same as previous guidelines
B. No amount of added sugars is recommended for children under 4 years
C. Natural sugars from fruit juice are exempt from limits
D. Non-nutritive sweeteners are preferred alternatives to added sugars
Answer: B- No amount of added sugars is recommended for children under 4 years
Explanation: The 2025–2030 guidelines state that "no amount of added sugars or non-nutritive sweeteners is recommended or considered part of a healthy or nutritious diet" for children, with explicit guidance to completely avoid added sugar for children aged four and under. The guidelines also recommend limiting 100% fruit juice and diluting it with water rather than treating it as equivalent to whole fruit.
Clinical Pearl: While pediatric reviewers have questioned whether avoiding nearly all added sugars may be unrealistic and undermine adherence to other guidance, the family physician can translate this into practical steps: eliminating sugar-sweetened beverages (soda, fruit drinks, energy drinks) and checking labels for "added sugars" on packaged snacks. The guidelines' strengthened guidance on added sugars through age 10 requires intentional meal planning for families
A 19-year-old man presents with 3 days of persistent vomiting, abdominal pain, and compulsive hot showers that temporarily relieve symptoms. He admits to daily cannabis use for 3 years. Laboratory studies show mild hypokalemia and normal amylase/lipase. Which diagnosis is most likely, and what is the appropriate pharmacologic management?
A. Acute pancreatitis; initiate opioid analgesia
B. Cannabinoid hyperemesis syndrome (CHS); consider haloperidol or droperidol
C. Gastroparesis; prescribe metoclopramide
D. Cyclic vomiting syndrome; use triptans
Answer: B- Cannabinoid hyperemesis syndrome (CHS); consider haloperidol or droperidol
Explanation: The triad of cyclic vomiting, abdominal pain, and compulsive hot bathing is pathognomonic for cannabinoid hyperemesis syndrome (CHS), a paradoxical effect of chronic heavy cannabis use. The 2024 SAEM GRACE-4 guidelines recommend haloperidol or droperidol (in addition to serotonin antagonists like ondansetron) for symptomatic management in the emergency department. Opioids (A) should be avoided due to addiction risk in CUD patients; metoclopramide (C) and triptans (D) are not first-line for CHS.
Clinical pearl: Definitive treatment is cannabis cessation; symptoms typically resolve within days to weeks of stopping use. Topical capsaicin cream (to the abdomen) has emerged as an adjunctive therapy mimicking the hot shower effect via TRPV1 receptor activation.
A 58-year-old woman with chronic neck pain and referred arm pain has undergone two diagnostic medial branch blocks with 80% pain relief each time. Her interventional pain physician recommends cervical medial branch radiofrequency ablation. The patient asks about the evidence supporting this procedure. Which of the following statements accurately reflects the 2025 BMJ guideline and the accompanying network meta-analysis findings?
A. Radiofrequency ablation shows moderate certainty of meaningful benefit for axial neck pain and is conditionally recommended
B. The network meta-analysis found very low certainty evidence for radiofrequency ablation, and the guideline strongly recommends against its use for axial spine pain
C. Radiofrequency ablation is recommended for radicular pain when diagnostic blocks are positive, with moderate certainty of benefit
D. The guideline recommends radiofrequency ablation only after failure of three epidural steroid injections
Answer: B- The network meta-analysis found very low certainty evidence for radiofrequency ablation, and the guideline strongly recommends against its use for axial spine pain
Explanation: The BMJ 2025 network meta-analysis found evidence for joint radiofrequency ablation proved of very low certainty for chronic axial spine pain. The guideline panel issued a strong recommendation against radiofrequency ablation with or without joint-targeted injection for chronic axial spine pain. For chronic radicular pain, the panel also issued a strong recommendation against dorsal root ganglion radiofrequency with or without epidural injection.
Clinical Pearl: Despite traditional teaching that diagnostic medial branch blocks predict response to radiofrequency ablation, the BMJ guideline challenges this paradigm. The ASIPP 2026 guidelines maintain more favorable recommendations for facet joint interventions based on different evidence interpretation, creating tension in clinical decision-making. When counseling patients, acknowledge guideline discordance and emphasize that the strongest evidence supports multidisciplinary rehabilitation and self-management strategies.
A 55-year-old woman presents with atraumatic left knee swelling of 3 days' duration. The knee is warm and erythematous. She has a history of gout. Which is the most appropriate next step in diagnosis?
A. Immediate MRI to evaluate for septic arthritis
B. Arthrocentesis with synovial fluid analysis
C. Trial of oral corticosteroids pending culture results
D. Weight-bearing radiographs to assess for fracture
E. Serum uric acid level to confirm gout flare
B. Arthrocentesis with synovial fluid analysis
Explanation: The 2026 AFP guideline recommends arthrocentesis for nontraumatic effusions when joint infection or crystal disease is suspected.In this patient with warmth, erythema, and effusion, the differential includes septic arthritis, gout, and pseudogout. Synovial fluid analysis with WBC count, Gram stain, culture, and crystal examination is essential. WBC ≥50,000/µL suggests septic arthritis; 2,000–49,000/µL suggests crystal disease.MRI (A) is not first-line; corticosteroids (C) should not precede infection exclusion; radiographs (D) are not indicated without trauma; serum uric acid (E) is often normal during acute gout.
Clinical Pearl: Point-of-care ultrasonography can guide arthrocentesis when available, improving fluid acquisition success and reducing complications; never delay arthrocentesis when septic arthritis is in the differential, as joint destruction can occur within 24–48 hours
A 38-year-old man presents with 3 days of left eye pain, photophobia, and decreased vision. Slit-lamp examination (if available) or penlight with fluorescein reveals dendritic corneal lesions. He has no history of herpes simplex virus. What is the most appropriate immediate management?
A. Start topical trifluridine and oral acyclovir; urgent ophthalmology referral
B. Start topical corticosteroids and cycloplegic drops
C. Start topical fluoroquinolone antibiotic drops
D. Order HSV PCR and await results before starting treatment
Answer: A- Start topical trifluridine and oral acyclovir; urgent ophthalmology referral.
Explanation: Dendritic corneal lesions are pathognomonic for herpes simplex keratitis, a vision-threatening emergency. dendritic lesions require immediate referral. Topical antiviral therapy (trifluridine) combined with oral acyclovir reduces recurrence and promotes healing. Corticosteroids (B) are absolutely contraindicated in active epithelial herpetic keratitis as they worsen infection. Fluoroquinolones (C) are inappropriate for viral keratitis. Delaying treatment for PCR results (D) risks corneal scarring and permanent vision loss—clinical diagnosis warrants immediate therapy.
Clinical Pearl: The "dendritic" pattern—branching, linear staining with fluorescein and rose bengal—represents epithelial infection by HSV. Never apply steroids without antiviral coverage; this is one of the most common iatrogenic causes of corneal blindness.
A 58-year-old patient with established cardiovascular disease asks about fat intake. The 2025–2030 Dietary Guidelines recommend using butter and beef tallow alongside olive oil for cooking, while maintaining saturated fat <10% of calories. A family medicine resident recognizes this creates a potential contradiction. What is the most evidence-based counseling approach?
A. Follow the guidelines exactly as written, as they represent federal policy
B. Prioritize olive oil and plant-based fats, noting the tension between the guidelines' fat recommendations and their saturated fat limit
C. Recommend butter and beef tallow as preferred cooking fats
C. Eliminate all dietary fat to minimize cardiovascular risk
Answer: B- Prioritize olive oil and plant-based fats, noting the tension between the guidelines' fat recommendations and their saturated fat limit
Explanation: The 2025–2030 guidelines' endorsement of butter and beef tallow alongside olive oil while simultaneously advising saturated fat intake not exceed 10% of calories creates a logical tension given the inherent saturated fat content of these animal fats. The American Heart Association 2026 scientific statement and ACC/AHA Primary Prevention Guidelines maintain Class I recommendations for dietary patterns emphasizing vegetables, fruits, legumes, nuts, whole grains, and fish, with Class IIa recommendations supporting replacement of saturated fat with mono- and polyunsaturated fats. The DGA's framing of "healthy fats" to include animal-based sources lies in stark contrast to professional cardiology guidance.
Clinical Pearl: For patients with established ASCVD, prioritizing olive oil, nuts, and fatty fish while limiting butter and beef tallow aligns with the stronger evidence base from cardiology guidelines.
A 42-year-old veteran with PTSD and daily cannabis use presents for integrated care. He uses cannabis to "numb" trauma-related hyperarousal. Which combination of recommendations aligns with current evidence-based guidelines?
A. Recommend cannabis continuation for PTSD symptoms; prescribe dronabinol for CUD
B. Advise against cannabis for PTSD per VA/DoD guidelines; offer CBT/MET for CUD; screen for withdrawal if cessation attempted
C. Initiate naltrexone for CUD; continue cannabis for sleep
D. Refer to specialized PTSD treatment only; defer CUD management
answer: B- Advise against cannabis for PTSD per VA/DoD guidelines; offer CBT/MET for CUD; screen for withdrawal if cessation attempted
Explanation: The 2023 VA/DoD PTSD guideline makes a strong recommendation against cannabis or cannabis derivatives for PTSD treatment. For CUD, the 2021 VA/DoD SUD guideline suggests CBT, MET, or combined CBT/MET as initial treatment, considering patient preference. Given daily use, cannabis withdrawal syndrome is likely if he attempts cessation; screening for withdrawal symptoms (anxiety, irritability, insomnia) and providing supportive care or symptom-targeted medications (e.g., mirtazapine for sleep, gabapentin for anxiety) may improve outcomes.
Clinical pearl: Co-occurring PTSD and CUD requires integrated treatment addressing both conditions. Contingency management with abstinence-based incentives has shown promise for enhancing CUD treatment outcomes when combined with psychotherapy. Avoid naltrexone (C) for CUD—evidence is insufficient; naltrexone has shown some benefit for craving reduction but not abstinence
A 62-year-old man with chronic low back pain is considering intramuscular trigger point injection with local anesthetic and corticosteroid for myofascial pain. According to the 2025 BMJ network meta-analysis, what did the evidence show regarding this intervention compared with sham?
A. Moderate certainty of benefit for short-term pain relief
B. Low certainty of little to no benefit; intramuscular local anesthetic alone showed WMD −0.53 cm
C. Low certainty that intramuscular injection with steroids may increase pain
D. High certainty of equivalence to physical therapy
Answer: C- Low certainty that intramuscular injection with steroids may increase pain
Explanation: The BMJ 2025 network meta-analysis found that intramuscular injection of local anesthetic with steroids may increase pain compared with sham, with a weighted mean difference of 1.82 cm (95% CI −0.29 to 3.93). This was characterized as low certainty evidence. Intramuscular injection of local anesthetic alone showed WMD −0.53 cm (95% CI −1.97 to 0.92), also suggesting little to no benefit.
Clinical Pearl: The potential for steroid-containing intramuscular injections to increase pain—while based on low certainty evidence—warrants caution. For myofascial pain, consider dry needling or trigger point injection without corticosteroid, or preferably refer to physical therapy with manual therapy and structured exercise programs, which the 2024 AAFP guideline supports with stronger evidence