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20 Cards in this Set
- Front
- Back
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What measurements are needed for tibial plateau fx to be "non-displaced" |
<3 mm step off <5 mm gapping |
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What is in the anterior compartment of the leg? |
Tibialis anterior Extensor digitorum longus Extensor hallucis longus Peroneus tertius Anterior tibial artery and vein Deep peroneal nerve |
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What is in the lateral compartment of the leg? |
Peroneus longus and brevis Superficial peroneal nerve |
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What is in the superficial posterior compartment of the leg? |
Soleus gastrocnemius plantaris tendon |
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What is in the deep posterior compartment of the leg? |
Flexor digitorum longus Tibialis posterior Flexor hallucis longus Posterior tibial artery and vein Tibial nerve Peroneal artery and vein |
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ACL bundle positions |
Anteromedial- tight in flexion, lax in extension Posterolateral- tight in extension, lax in flexion |
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What is in the superficial layer of the lateral femorotibial joint? |
IT band Biceps femoris |
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What is in the middle layer of the lateral femorotibial joint? |
Lateral patellofemoral ligament Lateral patellar retinaculum |
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What is in the deep layer of the lateral femorotibial joint? |
Superificial lamina -LCL -Fabellofibular ligament (variably present) Deep lamina -Popliteus muscle/tendon (inserts anterior/distal to LCL) -Popliteofibular ligament -Capsule (extends 15 mm below joint line) -Arcuate ligament |
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What is in the superficial layer of the medial femorotibial joint? |
Sartorius Fascia (blends w/ retinaculum anteriorly and capsule posteriorly) |
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What is in the middle layer of the medial femorotibial joint? |
Superficial MCL (inserts 5-7 mm below joint line) Posterior Oblique ligament Medial patellofemoral lig Medial patellar retinaculum Semimenbranosus |
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What is in the deep layer of the medial femorotibial joint? |
Deep MCL (meniscofemoral fibers and meniscotibial fibers) Capsule (extends 15 mm below joint line) |
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What is function of medial patellofemoral ligament? |
Primary restraint to lateral dislocation (most common) |
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Where does superficial peroneal nerve run |
In lateral compartment of leg, crosses anteriorly 12 cm above lateral malleolus (can be injured in lateral ankle approach) |
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Where does sural nerve run? |
Formed from medial sural cutaneous (tibial N) and lateral sural cutaneous (peroneal N) Runs subcutaneously in posterolateral leg, crosses Achilles tendon 10 cm above insertion, then to lateral heel |
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What can be injured during lateral release of the patella? |
Superior lateral geniculate artery |
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What is segond fracture associated with |
ACL disruption |
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What is "Double PCL sign" |
MRI for displaced bucket handle meniscus tear |
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What is the internervous plane and dangers for medial parapatellar approach to the knee? |
IN: -No planes, capsule is under skin Dangers: -Infrapatellar branch of saphenous nerve (neuroma may develop) |
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What is the internervous plane and dangers for posterolateral appraoch to the knee? (Harmon) |
IN: -Gastrocnemius/solius/FHL (tibial) -Peroneus longus/brevis (superf. peroneal) Dangers: -Lesser saphenous bein -Post. tibial artery |
