Hip - Hip • Ball and socket joint • Muscles are grouped...

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Unformatted text preview: Hip • Ball and socket joint • Muscles are grouped anterior, medial, and posterior • Actions – Flexion/extension Abduction/adduction Medial rotation/lateral rotations Hip Joint and Femur Anterior Muscles • Iliacus • Psoas major • Known as Iliopsoas because they insert together on the femur • Tensor fascia latae • Sartorius • Rectus femoris • Action - flexion Hip Joint and Femur Anterior Muscles – Tensor Fascia Latae • Lateral to gluteus muscles • Origin – Posterior to anterior superior iliac spine (ASIS) • Insertion – iliotibial band attaches below the knee into the lateral tibia • Nerve – superior gluteal • Action – hip flexion, abduction, and internal rotation; braces the knee Hip Joint and Femur Anterior Muscles – Sartorius • Origin – ASIS • Insertion – Medial to the tibial tuberosity • Nerve – Femoral nerve • Action - Flexion, abduction and external rotation of the hip; flexion and internal rotation of the knee Hip Joint and Femur Anterior Muscles – Rectus Femoris • Origin – AIIS – anterior inferior iliac spine and a line above the acetabulum • Insertion – Patella and tibial tuberosity • Nerve – Femoral nerve • Action - Flexion, of the hip; extension of the knee • RA: Pelvic tilt Hip Joint and Femur Medial Muscles Adductor magnus Gracilis Pectineus Adductor brevis Adductor longus Hip Joint and Femur; Medial Muscles - Adductor magnus Origin - pubis inferior ramus Insertion – linea aspera of the femur Nerve – obturator nerve Action – anterior fibers - Hip flexion, adduction, and internal rotation; external rotation beyond 90° hip flexion Posterior fibers – hip extension and external rotation Hip Joint and Femur Medial Muscles – Gracilis Origin – pubis - body Insertion – tibia; crosses knee and inserts medial to the tibial tuberosity near the sartorius Crosses 2 joints so also acts on the knee Nerve – obturator nerve Action – Hip flexion and adduction; Knee flexion and internal rotation Hip Joint and Femur Medial Muscles - Pectineus Origin - pubis Insertion – Below the lesser trochanter of the femur – up to the linea aspera Nerve – femoral nerve Action – flexion, add uction, and internal rotation; external rotation beyond 90° hip flexion Hip Joint and Femur Medial Muscles - Adductor brevis Origin - pubis - inferior ramus Insertion – linea aspera of the femur;...
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This note was uploaded on 02/11/2010 for the course AHS 234 taught by Professor Bial during the Fall '09 term at Nassau CC.

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Hip - Hip • Ball and socket joint • Muscles are grouped...

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