SI Notes-Test 1

SI Notes-Test 1 - Lumbrosacral plexus provides motor and...

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Lumbrosacral plexus provides motor and sensory nerve to abdominal wall, pelvis, and perineum. Sacral plexus posterior region of lower limb, except small head of biceps femoris Sacral nerve (roots L4, L5, S1, S2, S3) the thickest nerve of the body is sciatic Composed of common peroneal and tibial nerve Common peroneal nerve composed of dorsal rami Tibial nerve composed of ventral rami (L4-S3) L4-L5 is lumbosacral trunk Osteoperosis is bone thinning due to lack of calcium (estrogen causes shrinking of kypphoris) Congenital dislocation of the hip Loose hip effects female babies Treatment is to splint or harness femur together – double diapers Superior gluteal artery gives blood supply to gluteal minimus and medius Gluteal maximus is supplied by inferior gluteal artery Positive trendenlenberg sign – stand on one side and if hip drops Negative trendelenberg sign – hips are even Postive shows damage to superior gluteal nerve – drops other side of damaged
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