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home | OG anatomy | gross anatomy | topic index | chapter 10
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MUSCLE COMPARTMENTS IN THE LEG |
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| 1. Anterior / extensor compartment | ||||||
Boundaries |
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Laterally: extensor surface of the fibula and anterior intermuscular septum. Medially: extensor surface of the tibia Anteriorly: fascia cruris Posteriorly: interosseous membrane Task: Name the structures labelled A-D |
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note : This the tightest of the compartments, therefore more vulnerable to compartment syndrome |
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| 2. Lateral compartment | ||||||
Boundaries |
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Anteriorly: anterior intermuscular septum Posteriorly: posterior intermuscular septum Medially: peroneal surface of the fibula Laterally: fascia cruris |
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Contents |
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• Peroneus longus and brevis(review their attachment) • Superficial peroneal nerve ( note the peroneus longus [P.L] , peroneus brevis [P.B] and Superficial Peroneal nerve [S.P.n] ) *No artery. Blood supply by branches of peroneal artery in the posterior compartment.
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| 3. The posterior compartment | ||||||
Boundaries |
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• Anteriorly: tibia, fibula and the interosseous membrane • Anteromedially: fascia cruris • Postero-laterally: lateral intermuscular septum
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Superficial triceps surae – soleus and two heads of gastrocnemius' plus plantaris when present (review their attachments)
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Deep;
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