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16 Cards in this Set
- Front
- Back
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Transverse acetabular ligament |
Covers cotyloid notch in inferior central acetabulum Used in THA to assess anteversion and coronal tilt |
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Capsule ligaments |
Iliofemoral (Y ligament of Bigelow)- provides strong atnerior support, resists extension Pubofemoral- prevents hyperextension of hip, inferior joint support Ischiofemoral- minimal posterior support |
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Muscle associated w/ ASIS avulsion, AIIS avulsion and patellofemoral disorders |
ASIS- sartorius AIIS- rectus femoris PF- vastus medialis |
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Anterior compartment of thigh |
Quadriceps: vastus lateralis, vastus intermedius, vastus medius, rectus femoris |
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Posterior compartment of thigh |
Biceps femoris (both heads), semitendinosus, semimembranosus, sciatic nerve |
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Medial compartment of thigh |
Adductor magnus, adductor longus, aductor brevis, gracilis, femoral artery and vein |
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What can be injured by placing retractors behind the transverse acetabular ligament? |
Obturator nerve |
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What nerve runs along sartorius muscle belly? |
Lateral femoral cutaneous nerve |
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What artery is at risk for anterolateral approach to the hip? |
Descending branch of the lateral circumflex femoral artery |
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What is the course of the medial circumflex femoral artery? |
Between pectineus and psoas, then posterior to femoral neck under quadratus femoris |
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THA fixation techniques and angles |
Press fit: implant 1-2 mm larger than bone. Hoop stresses provide initial fixation while bone ingrows Line to line: implant and bone same size. Screws used to provide initial fixation 35-45 degrees lateral inclination and 15 degrees anteversion |
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Internervous plane and dangers to anterior approach to the hip (Smith-Peterson) |
IN: -Superficial- sartorius and tensor fasciae latae -Deep- Rectus femoris and gluteus medius Dangers: -Lateral femoral cutaneous n -Femoral nerve (too much medial retraction) -Ascending branch of the lateral femoral cutaneous artery (must be ligated) |
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Internervous plane and dangers to the medial approach to the hip (Ludloff) |
IN: -Superficial- Adductor longus and gracilis -Deep- Adductor brevis and adductor magnus Danger: -Obturator nerve -Medial femoral circumflex artery -External pudendal artery |
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Internervous plane and dangers to anterolateral appraoch to the hip (Watson-Jones) |
IN: -Tensor fasciae latae and gluteus medius Dangers: -Descending branch of LFCA (under rectus) -Femoral nerve (vigorous medial retraction) |
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Internervous plane and dangers to lateral approach to the hip (Hardinge) |
IN: -Split gluteus medius 1/3 anterior and vastus lateralis Dangers: -Superior gluteal artery and nerve -Femoral nerve, artery and vein |
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Internervous plane and dangers to posterior approach to the hip (Moore/Southern) |
IN: -Split glueus maximus Dangers: -Sciatic nerve (reflect short ER protects) -Inferior gluteal artery (proximal extension) -Medial femoral circumflex artery (under quadratus femoris) |
