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분당서울대학교병원 정형외과 김태원

분당서울대학교병원 정형외과 김태원

Psoas & Hamstring muscles

Anterior muscles of pelvisAnterior muscles of pelvis

Psoas major

Origin : T12-L5 vertebraInsertion :lesser trochanterAction : powerful hip flexionInnervation:femoral N.

Psoas minor

Origin : T12 & L1 vertebraInsertion : pectineal lineAction : weak flexion of trunk

THOMAS TEST

• Supine position

• Adequate flex uninvolved limb(Thomas. 1876)

(Chung et al. JBJS-Am 2011)

STAHELI TEST

• Prone position

• gradually extends the thigh until beginning of spinal motion

(Staheli. 1977)

(Chung et al. JBJS-Am 2011)

Posterior femoral muscles(Hamstrings)

Posterior femoral muscles(Hamstrings)

Biceps femoris(long head)

Origin: ischial tuberosityInsertion: head of fibulaAction: 1. hip extension2. knee flexion & ERInnervation:tibial division of sciatic N.

Biceps femoris(short head)

Origin: 1. linea aspera,2. supracondylar lineInsertion: fibula, lateral tibiaAction: knee flexion & ERInnervation:Peroneal division of sciatic N

SemitendinosusOrigin: ischial tuberosityInsertion: proximal medial tibiaAction:1. hip extension2. knee flexion & IRInnervation: tibial division of sciatic N.

SemimembranosusOrigin: ischial tuberosityInsertion: posterior medial tibial condyleAction: 1. hip extension2. knee flexion & IRInnervation:Tibial division of sciatic N.

Anatomy Seminar UUH OS

POPLITEAL ANGLE

(Chung et al. JBJS-Am in press)

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