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Muscles/Ligaments

Muscles: Hip Region

QuestionAnswer
IIliofemoral ligament (Y ligament of Bigelow) • AIIS and adjacent body of ilium Fiber Course: travels inferiorly and diverges to • Intertrochanteric line TENSION: Hip Extension -prevents extension beyond zero degrees -Can support upper body weight without muscle activity.
Ischiofemoral ligament • Body of ischium Fiber Course: Anteriorly, Superiorly and Laterally to • Medial aspect of greater trochanter and upper portion of intertrochanteric line TENSION: Hip Extension and Internal Rotation
Pubofemoral ligament • Body and superior ramus of pubis Fiber Course: Crosses lower anterior aspect of joint • Inferior aspect of intertrochanteric line TENSION: Hip Abduction
Psoas Major O: Anterolateral aspects lumbar bodies and transverse processes (T12) I: Strong tendon to lesser trochanter A: Hip Flexor. Lumbar Extension (reverse action) I: L2-L4 Lumbar Plexus Segments
Iliacus O: Most of iliac fossa I: Strong tendon to lesser trochanter A: Hip Flexion. Lumbar Extension (reverse action) I: Femoral Nerve L2-L4 PD
Psoas Minor O: T12 and L1 vertebrae I: Point on Arcuate Line of Ilium A: No role in hip joint. Potential at vertebral column, but insignificant I: Upper lumbar spinal cord segments
Rectus Femoris O: Two heads. AIIS and ilium just superior to acetabulum I: Tibial tuberosity* A: Leg Extension. Assist iliopsoas w/hip flexion I:Femoral Nerve
Vastus Lateralis O: Continous. Ant. aspect greater trochanter, lat. aspect linea aspera, lat. IM septum I: Tibial Tuberosity* Most inferior fibers are continous with lateral patellar retinaculum A:Leg Extension I:Femoral Nerve
Vastus Medialis O: Inferior to intertrochanteric line, med. aspect linea aspera & supracondylar region, med. IM septum I: Tibial Tuberosity* Most inferior fibers are continous with medial patellar retinaculum A:Leg Extension I:Femoral Nerve
Vastus Intermedius O: Upper 2/3 of ant. and lat. aspects of femoral shaft I: Deep surface of quad tendon and sup. aspect of patella. *Tibial Tuberosity A:Leg Extension I:Femoral Nerve
Sartorius O: ASIS I: Pes Anserinus A: Hip: Flexion, Abduction, and ER Knee: Flexion and IR I: Femoral Nerve
Semitendinosus O: Ischial Tuberosity I: Pes Anserinus A: Hip extension and Knee Flexion. IR Flexed Leg I: Tibial Portion of Sciatic Nerve
Semimembranosus O: Ischial Tuberosity I: Posteromedial aspect of the medial tibial condyle A: Hip extension and Knee Flexion. IR Flexed Leg I: Tibial Portion of Sciatic Nerve
Biceps Femoris O: Long Head-ischial tuberosity Short Head-lower ½ of linea aspera and lat. supracondylar line I: Head of fibula A: Hip extension and Knee Flexion (short head). ER Flexed Leg. I: Tibial Portion of Sciatic Nerve. Short head is common peroneal.
Pectineus O: Pecten of Pubis and adj. portion of superior pubic ramus I: Pectineal Line of posteromedial aspect of femur A: Hip Flexor (and Adductor) I: Femoral (and Obturator)
Adductor Longus O: Pubic Body, inferior to tubercle I: Middle 1/3rd of medial aspect of linea aspera A: Hip Adductor I: Obturator Nerve Branches
Adductor Magnus O: Inferior aspect of os coxae (inferior pubic ramus to ischial tuberosity) I: (2) Posteromedial aspect of femur (anterior vs. posterior fibers)* note: “gap” A: Prox-Hip Adductor Post- Hip Ext. I: Prox-Obturator Post-Tibial
Obturator Externus O: Ant/Inf/Post aspect of obturator forman and membrane I: Trochanteric Fossa A: ER Hip, Weak Hip adductor I: Obturator Nerve Branches
Adductor Brevis O: Body and Inferior Ramus of Pubis I: Upper third of Linea Aspera A: Hip Adductor I: Obturator Nerve Branches
Gracilis O: Body and Inferior Ramus of Pubis I: Pes Anserinus A: (weak) Hip Adduct and Flex. Leg IR I: Obturator Nerve branches
Created by: Phillypino