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Lab 7 - Gluteals & Posterior Thigh

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Gluteus Maximus Origin
-Posterior sacrum
-Posterior ilium: sacrotuberous ligament & superior gluteal line
Gluteus Maximus Insertion
-Gluteal tuberosity of femur
-Via iliotibial tract to lateral condyle of tibia
Gluteus Maximus Action
-Extension of femur
-External rotation of extended thigh
Gluteus Maximus Nerve
Inferior gluteal nerve
Gluteus Maximus Blood
Superior/inferior gluteal artery
Gluteus Medius Origin
Posterior ilium between superior and middle gluteal lines
Gluteus Medius Insertion
Greater trochanter of femur
Gluteus Medius Action
-Abduction of femur
-Internal rotation of thigh
Gluteus Medius Nerve
Superior gluteal nerve
Gluteus Medius Artery
Superior gluteal artery
Gluteus Minimus Origin
Posterior ilium between middle and inferior gluteal lines
Gluteus Minimus Insertion
Anterior surface of greater trochanter
Gluteus Minimus Action
-Abduction of femur
-Internal rotation of thigh
Gluteus Minimus Nerve
Superior gluteal nerve
Gluteus Minimus Blood
Superior gluteal artery
Tensor Fascia Lata Origin
Anterior portion of iliac crest
Tensor Fascia Lata Insertion
Via iliotibial tract to lateral condyle of the tibia
Tensor Fascia Lata Action
-Stabilizes extended knee
-Flexion/abduction/internal rotation of femur
Tensor Fascia Lata Nerve
Superior gluteal nerve
Tensor Fascia Lata Blood
Superior gluteal artery
Piriformis Origin
Anterior sacrum
Piriformis Insertion
Greater trochanter of femur
Piriformis Action
External rotation of femur
Piriformis Nerve
Anterior rami S1 & S2
Piriformis Blood
Gluteal arteries
Quadratus Femoris Origin
Ischial tuberosity
Quadratus Femoris Insertion
Quadrate tubercle
Quadratus Femoris Action
External rotation of femur
Quadratus Femoris Nerve
Nerve to quadratus femoris
Quadratus Femoris Blood
Gluteal arteries
Obturator Internus Origin
Internal (posterior) surface of obturator membrane and rim of obturator foramen
Obturator Internus Insertion
Greater trochanter of femur
Obturator Internus Action
External rotation of femur
Obturator Internus Nerve
Nerve to obturator internus
Obturator Internus Blood
Gluteal arteries
Obturator Externus Origin
External (anterior) surface of obturator membrane and rim of obturator foramen
Obturator Externus Insertion
Greater trochanter of femur
Obturator Externus Action
External rotation of femur
Obturator Externus Nerve
Obturator nerve
Obturator Externus Blood
Gluteal arteries
Biceps Femoris Origin
Long head - ischial tuberosity
Short head - linea aspera
Biceps Femoris Insertion
-Lateral aspect of head of fibula
-Lateral condyle of tibia
Biceps Femoris Action
Both heads: Flexion of knee, external rotation of flexed knee
Long head: Extends hip
Biceps Femoris Nerve
Long head: Tibial division of sciatic nerve
Short head: Common peroneal division of sciatic nerve
Biceps Femoris Blood
Femoral profunda artery
Semimembranosus Origin
Ischial tuberosity
Semimembranosus Insertion
Posterior medial tibial condyle
Semimembranosus Action
-Flexion of knee
-Internal rotation of flexed knee
-Extension of hip
Semimembranosus Nerve
Tibial division of sciatic nerve
Semimembranosus Blood
Femoral profunda artery
Semitendinosus Origin
Ischial tuberosity
Semitendinosus Insertion
Via pes anserinus to proximal medial tibial shaft
Semitendinosus Action
-Flexion of knee
-Internal rotation of flexed knee
-Extension of hip
Semitendinosus Nerve
Tibial division of sciatic nerve
Semitendinosus Blood
Femoral profunda artery