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27 Cards in this Set
- Front
- Back
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What forms the lesser & greater sciatic foramen?
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- sacrospinous & sacrotuberous ligaments
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Where do the hamstring muscles generally originate from?
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- ischial tuberosity
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What is the difference between the origin of the short & long head of the biceps femoris?
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- long head originates on the ischial tuberosity
- short head originates on the linea aspera |
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Which direction do things usualy pass when going through the greater & lesser sciatic foramen?
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- greater: from pelvis --> gluteus
- lesser: from gluteus --> pelvis |
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What are the actions of the gluteus maximus?
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- lateral rotation of the thigh + extensor
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What is special about the superior & middle cluneal nerves? What levels do they come from?
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- both come from dorsal primary rami
- superior: L1-L3 - middle: S1-S3 |
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Inferior cluneal nerve is a branch of the ______. What levels is this main nerve & specifically the inferior cluneal nerve?
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- posterior cutaneous nerve of the thigh (S1-S3)
- inferior cutaneous nerve of the thigh (S2-S3) |
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what is the difference between the superior & inferior gluteal nerves in terms of where they emerge?
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- superior gluteal nerve emerges from above piriformis - supplies medius & minimus
- inferior gluteal nerve emerges from below piriformis supplies the gluteus maximus |
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who are the main medial rotates of the thigh?
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- gluteus medius & minimus
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What is the trendelenburg test?
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- medius & minimus help support side you're walking on - if don't have this the hip will sag on the unsupported side - called positive test
- normally hip is elevated on unsupported side - person will lurch towards the affected side |
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How do the semitendinosus & membranosus criss cross? Where does the biceps tendon attach?
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- semitendinosus originates more posterior to membranosus but then criss crosses and inserts more anterior on medial tibia than the membranous, membranosus on upper medial posterior tibia
- biceps attaches on the head of the fibula |
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What nerve are the hamstrings supplied by? What is the exception?
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- tibial division of the sciatic nerve
- short head of biceps is exception - supplied by common peroneal nerve |
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What tendons are part of the pes anserinus?
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- semimembranosus, gracilias, semitendinosus
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What is iliotibial band (tract) syndrome?
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- pain above lateral knee or along lateral thigh caused by inflammation of the IT band as it rubs against the lateral condyle of the femur
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What levels do the superior & inferior gluteal nerves come from? What muscle are they in relation to?
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- superior: L4, L5, S1
- inferior: L5, S1, S2 - piriformis |
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the obturator internus originates inside the pelvis and comes out the __________. The _____ comes out the greater sciatic notch.
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- lesser sciatic notch
- piriformis |
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piriformis syndrome
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- sciatic nerve can come through piriformis muscle - pain similar to sciatica
- or common peroneal division can go over the piriformis and be compressed |
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which gluteus muscles are involved in medial & lateral rotation?
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- medial rotation: minimus & medius
- lateral: maximus |
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what is the safe area for gluteal injections?
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- upper lateral quadrant
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who do the superior & inferior gluteal arteries supply?
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- superior: medius & minimus
- inferior: maximus - really gets blood supply from both b/c so big |
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how does the internal pudendal artery travel?
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- comes out the greater sciatic foramen and goes in the lesser
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what arteries make up the cruciate anastamosis?
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1) inferior gluteal
2) lateral femoral circumflex 3) medial femoral circumflex 4) first perforating artery - off of deep artery of thigh |
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what levels does the sciatic nerve come from? What levels is the posterior cutaneous nerve of the thigh?
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- L4 - S3
- S1-S3 |
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once the peroneal nerve wraps around the neck of the fibula what does it become? What happens to tibial nerve?
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- superficial & deep peroneal artery
- tibial nerve continues down in the popliteal fossa |
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the sciatic nerve supplies sensation to all of the lower leg with what exception?
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- except medial side done by saphenous nerve - branch of femoral
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herniated discs most often compress what nerve roots causing sciatica?
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- L5 or S1
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a lateral protrusion of a disk between L4 & L5 will pick off what nerve?
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- L5
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