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Flashcards in FEMUR Deck (9)
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1

Functions of the neck femur

SUBCAPITAL
elderly: common in women after menopause

TROCHANTERIC
Young: direct trauma

2

HEAD of the FEMUR may undergo AVSCULAR NECROSIS

SHORTENED WITH LATERAL ROTATIOM

Pull upward by the QUADRICEPS FEMORIS, ADDUCTORS and HAMSTRING MUSCLES

Femoral Neck Fracture

3

OBTURATOR ARTERY supplies a small branch to the head

MEDIAL FEMORAL CIRCUMFLEX is the MAJOR SUPPLY

AVASCULAR NECROSIS of the FEMORAL HEAD

4

Most commonly occur in posterior direction

Thigh is shortened and medially rotated by the gluteus medius and minimus muscles

Sciatic nerve may be compressed, resulting in weakness of muscles in the posterior thigh, leg and foot

Paresthesia over the posterior and lateral parts of the leg and dorsal and plantar surfaces of the foot

DISLOCATION of the HEAD of the FEMUR

5

ANTERIOR LEG MUSCLES

NERVE: deep peroneal nerve

ACTION: dorsiflexion and extension

MUSCLES:
Tibialis anterior
Extensor digitorum longus
Peroneus tertius
Extensor hallucis longus
Extensor digitorum brevis

6

LATERAL LEG MUSCLES

NERVE: superficial peroneal nerve

ACTION: plantar flexion and evertion

MUSCLES: peroneus longus, peroneus brevis

7

POSTERIOR LEG MUSCLES

NERVE: tibial nerve

ACTION: plantar flexion and extension
Superficial group - gastrocnemius, plantaris, soleus
Deep group- popliteus, flexor digitorum longus, flexor hallucis longus, tibialis posterior

8

Collectively called TRICEPS SURAE

GASTROCNEMIUS and SOLEUS

9

Neck shaft angle changes:
COXA VARA ?

COXA VALGA ?

COXA VARA - decreased

COXA VALGA - increased