KP221 Lecture Notes - Lecture 15: Lumbosacral Trunk, Femoral Nerve, Obturator Nerve
10 Jul 2019
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Document Summary
Lateral cutaneous nerve of thigh (l2, l3: genitofemoral (l1, l2, femoral nerve (l2 l4) anterior muscles, lower limb, obturator (l2 l4) deep nerve, rotator cuff of hip. Lumbosacral trunk (l4, l5) connects the two plexuses: l1 l5 is the vertebrae involved, l1 = 3, l2 = 4, l3 = 2, l4 = 3, l5 = 1. Lumbosacral trunk (l4, l5: superior gluteal (l4, l5, s1) large gluteus muscles (minimums, maximus, medias) Inferior gluteal (l5, s1, s2: sciatic (l4 s3, pundendal (s2 s4, l4 s4 is the vertebrae involved, l4 = 2, l5 = 4, s1 = 3, s2 = 3, s3 = 2, s4 = 1. Anterior thigh muscles: pectineus, anterior part of thigh and proximal, attachment site is superior ramus of pubis and adducts, flexes hip joint, femoral nerve. Muscles that get mixed up a lot is pectineus because it adducts thigh and. Pectinous originates on the pubic above the obturator foreman.
