The Thigh.docx

3 Pages

Kinesiology & Health Science
Course Code
KINE 3575
Gus Kandilas

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The Thigh Introduction: - There are over 35 muscles which attach in and around the hip, pelvic and thigh region o Are categorized according to location o Play a role in knee, hip, sacrum and low back pain o Can be divided into the posterior, anterior, medial and lateral components o Are tested via extensibility, contractibility, circumference and palpation Musculature: - Anterior – flexors o Illiacus, Sartorius o Psoas muscles (major and minor) – hip flexors Quadriceps - Posterior – extensors, externally rotate the femur o Hamstrings  Extensibility test – straight leg raise (put leg on stretch)  Strength test – lie on stomach, knee flexed to 90° and foot either neutral, internally (semimembranosus) or externally (biceps femoris) rotated o Popliteus - Medial (“groin”) – adduct, laterally rotate thigh and hip o Adductors brevis, longus, magnus o Gracilis o Pectineus - Lateral – abduct o Iliotibial band o Tensor fascia latae o Gluteus medius Range of Motion: - Knee flexion/extension - Abduction/adduction - Hip flexion/extension - Hip internal/external rotation Contusions and Strains - Most common thigh injuries - Must rule out fractures and myositis ossificans (bone in muscle) Groin Injuries: - Involve muscle groups crossing the groin/inguinal region o Rectus femoris – hip flexor, knee extensor  May be injured by sudden stretch/contraction (ex: jump for a basketball)  Tests: contractibility, circumference, palpation, Ely’s test (on stomach, passive, bring heel to bum, how tight is rec. fem.?) o Illiacus and Psoas muscles  True primary flexors of the hip  Injury here = “true” groin strain  Tightness (“contracture”) here can cause low-back/groin pain & lordosis  Common in bent-over sports like basketball  Psoas major/minor – originate on the transverse processes of the lumbar vertebral bodies  Illicus – originates on the iliac fossa and merges with the Psoas  All share a common insertion point – lesser trochanter of the femur  Strength testing – resisting hip flexion (sitting on chair, hand on thigh
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