LORDosis
Diphragm
O: Sternal portion: Xiphoid process, Costal portion: ribs 6-12, Lumbar portion: anterior lumbar vertebrae L1-3
I: Central tendon
Inn: Phrenic nerve (C3-C5)
Action: primary muscle for respiration, descends during inhale, ascends during exhale
rectus femoris
O: straight: AIIS, reflected: groove of the ilium superior to acetabulum
I: patella by the quadriceps tendon, tibial tuberosity by the patellar tendon
Inn: Femoral nerve (L2-L4)
Action: extends the knee, flexes the hip
quadratus lumborum
O: iliac crest, iliolumbar ligament
I: 12th rib, TP's T12-L4
Inn: Ventral rami (T12-L3)
Action: Ipsilateral side bend, stabilizes the 12th rib and lumbar spine, hikes hip, bilateral extension
Latissimus Dorsi
O:Median sacral crest, posterior iliac crest, thoraco lumbar fascia, Sp's of T7-L5
I: floor of the bicipital groove of the humerus
Inn: thoracodorsal (C6-8)
Action: Open chain - internally rotate, extend, and adduct shoulder; closed chain - depresses shoulder complex
Gracilis
O: body of the pubis, ischiopubic ramus
I: pes anserine
Inn: obturator nerve (L2-L3)
Action: flexes and medially rotates the knee, adducts the hip
External Abdominal Obliques
O: Ribs 5-12
I: Anterior iliac crest, ASIS, Abdominal aponeurosis to linea alba
Inn: Ventral Rami (T7-T12)
Action: Ipsilateral side bend, Contralateral trunk rotation, bilaterally flexes trunk, compresses abdominal viscera, posterior pelvic tilt
vastus intermedius
O: proximal Anterolateral femur
I: patella by the quadriceps tendon, tibial tuberosity by the patellar tendon
Inn: Femoral Nerve (L2-L4)
Action: extends the knee
Iliacus
O: Iliac fossa, anterior SI ligaments
I: tendon to the psoas major to the lesser trochanter of the femur
Inn: Femoral Nerve (L2-3)
Action: flexes hip, externall rotates flexed hip
Iliocostalis Thoracis
O: the lower 6 ribs
I: the upper 6 ribs
Inn: dorsal rami of the lumbar and thoracic spinal nerves
Action: ipsilateral side bend, bilateral trunk extension
Adductros brevis
O: inferior ramus of pubis
I: pectineal line and linea aspera
Inn: Obturator nerve (L2-L3)
Action: adducts hip
O: inguinal ligament, anterior iliac crest, thoracolumbar fascia, lower 6 costal cartilages
I: Aponeurosis of the linea alba, pubic crest
Inn: Ventral rami (T7-T12)
Action: Compression of the abdominal viscera, lumbar stabilization
articularis genu
O:distal anterior aspect of the femur
I: suprapatellar bursa
Inn: femoral nerve (L2-L4)
Action - prevents impingement of the bursa during knee extension
Sartorious
O: ASIS
I: proximal medial surface of tibia at Pes anserine
Inn: Femoral nerve (L2-L3)
Action: flexes, abducts, ER hip, and flexes, IR the knee
Multifidus
O: TP's of the lower cervical to lumbar vertebrae, Sacrum, PSIS
I: SP's of the more superiorly located vertebrae
Inn: Dorsal rami of the corresponding level
Action: Trunk extension, ipsilateral sidebend, contralateral rotation, Stabilization of the Sacroiliac and lumbar joints
adductor magnus
O: inferior ramus of pubis and ischium, ischial tuberosity
I: linea aspera, medial supracondylar line, and adductor tubercle
Inn: obturator and tibial division sciatic ( L2-L4)
Action: hip adduction, extension
rectus abdominis
O: pubic crest and pubic symphysis
I: xiphoid process and the costal cartilage og ribs 5-7
Inn: ventral rami (T6-T12)
Action: Bilaterally flexes trunk, compresses abdominal viscera, posterior pelvic tilt
Vastus lateralis
O: intertrochanteric line, linea aspera, gluteal tuberosity, greater trochanter
I: lateral patella by the quadriceps tendon, tibial tuberosity by the patellar tendon
Inn: Femoral nerve (L2-L4)
Action: Extends the knee and stabilizes the patella
Psoas major
O: Anterior aspect of the transverse processes, vertebral bodies, and the adjoining discs or T12-L5
I: lesser trochanter of the femur
Inn: ventral rami (L1-3(4)
Action: Hip flexion, hip ER, trunk ipsilateral Sidebend, spinal flexion during sit-ups, spinal stabilization
Spinalis thoracis
O: SP's T11-L2
I: SP's L1-L4
Inn: dorsal rami of the thoracic spinal nerves
action: weak ipsilateral side bend, bilateral trunk extension
Pectineus
O: pectineal line on the superior ramus of pubis
I: Pectineal line of femur
Inn: femoral nerve (L2-L3)
Action: Hip adduction and flexion
internal abdominal oblique
O: inguinal ligament, anterior iliac crest, thoracolumbar fascia
I: lower 3-4 ribs, aponeurosis to midline linea alba, pubic crest
Inn: Ventral Rami (T7-T12)
Action: Bilaterally flexes trunk, compresses abdominal viscera, ipsilateral sidebend and rotation of the trunk
vastus medialis
O: intertrochanteric line, supracondylar line, medial to the line of the linea aspera
I: medial patella by the quadriceps tendon, tibial tuberosity by the patellar tendon
Inn: femoral nerve (L2-L4)
Action: Extends the knee and stabilizes the patella
tensor fascia latae (TFL)
O: anterior iliac crest, ASIS
I: iliotibial band to the lateral tibial condyle at Gerdy's tubercle
Inn: superior gluteal nerve (L4-S1)
Action: Extends and ER the knee, flexes, abducts, IR the hip, dynamic stabilizer of the knee joint
longissimus thoracis
O: Thoracolumbar fascia, Sacrum, Lumbar transverse processes (L1-L5)
I: TP's of all thoracic vertebrae (T1-T12), lower 8-9 ribs
Inn: Dorsal rami of the thoracic and lumbar spinal nerves
Action:
adductor longus
O: anterior pubic body
I: middle portion of linea aspera
Inn: obturator nerve (L2-L4)
Action: hip adduction and flexion