Chapter 17: The Spine & SI Joint
What is force closure?
the stability provided by the dynamic forces acting on the pelvis
This condition occurs when there is a greater than 125* angle of the femoral neck; increases the functional length of the femur
Coxa Valga
This occurs when full passive motion is present, but active terminal knee extension does not occur.
Extensor Lag
This portion of a shoe stabilizes the rear foot
Heel Counter
What is the mechanism for an Iliac Upslip?
Stepping off a curb; Hard fall on the buttock
What is counternutation?
a posterior tilt of the proximal sacrum relative to the ilium
What symptoms occur if there is irritation of the obturator nerve?
Adductor weakness and/or medial thigh sensory changes
Forceful Compression & Rotation
Which joint is responsible for the plantar flexion and dorsiflexion movements?
Talocrural Joint (Talus & Tib/Fib)
This joint mobilization is used to increase ankle eversion ROM
Grade 3 or 4 Subtalar Medial Glide
What is the function of the Global Muscles of the core?
Provide movement to the trunk due to longer lever arms and further distance from center of motion
Which condition is defined by tight lumbar extensors/multifidus and hip flexors, while having loose or weak abdominals and glutes, resulting in anterior pelvic rotation?
Lower Crossed Syndrome
What happens at the knee for the screw-home mechanism while weight bearing?
The femur rotates medially on the anchored tibia
This pathology is predisposed in individuals with high arches and excessive pronation; classic symptoms include heel pain with WB in the morning and gradually decreases as activity occurs throughout the day
What is the seated forward-bend test used for?
Determining the side of the SI lesion
What is it called when the abdomen is drawn in to provide facilitation of the transverse abdomens and multifidus muscles?
Abdominal Hollowing
Which pathology is also known as coxa sultans?
Snapping Hip Syndrome
60-90* of Flexion
This alignment pathology involves the distal end of the tibia being positioned closer to the midline than the proximal tibia; often associated with gene varum and coxa valgus
Tibial Varum
This joint mobilization is used to reduce pain with knee flexion
Grade 1 or 2 Posterior Glide
Which exercise regimen is used to combat disc injuries?
McKenzie Extension Back Program
This pathology occurs when the acetabulum covers more of the femoral head than it should; causing the anterosuperior aspect of the acetabulum to encroach on the labrum during hip flexion
Pincer Impingement
This surgical procedure for osteochondral injuries involves taking a small fragment of bone along with its articular cartilage from a portion of the non-WB joint surface and inserting it into the articular defect site
OATS procedure
Which nerve is affected during tarsal tunnel syndrome?
Posterior Tibial Nerve
Why would you use a Grade 3 or 4 Medial Glide of the Hip?
To increase hip abduction ROM