Muscles: Hip Region
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| 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.
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| 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
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| Pubofemoral ligament | • Body and superior ramus of pubis
Fiber Course: Crosses lower anterior aspect of joint
• Inferior aspect of intertrochanteric line
TENSION: Hip Abduction
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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| Sartorius | O: ASIS
I: Pes Anserinus
A: Hip: Flexion, Abduction, and ER
Knee: Flexion and IR
I: Femoral Nerve
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| Semitendinosus | O: Ischial Tuberosity
I: Pes Anserinus
A: Hip extension and Knee Flexion. IR Flexed Leg
I: Tibial Portion of Sciatic Nerve
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| 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
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| 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.
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| 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)
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| 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
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| 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
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| 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
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| Adductor Brevis | O: Body and Inferior Ramus of Pubis
I: Upper third of Linea Aspera
A: Hip Adductor
I: Obturator Nerve Branches
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| Gracilis | O: Body and Inferior Ramus of Pubis
I: Pes Anserinus
A: (weak) Hip Adduct and Flex. Leg IR
I: Obturator Nerve branches
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