Abstract
Common peroneal nerve palsy at the knee level is one of the most common peripheral neuropathy. The involvement is mainly caused by the compression or traction of the nerve. Clinically, however, the palsy associated with isolated fibula head fracture is uncommon. We present a case of these combined injuries treated operatively. A 51-year-old male was involved by a fall. X-ray revealed an avulsion fracture of the fibula head, and MRI revealed intact ligamentous structures at the knee joint. The nerve conduction study showed the peroneal nerve palsy at the fibula head level. Fourteen days after the injury, surgical treatment for internal fixation of fibula head fracture and external neurolysis of common peroneal nerve was performed. Common peroneal nerve showed continuity, with the bleeding in epineurium both at the fracture level and at the level 5 cm proximally. In this case, common peroneal nerve was involved by compression due to the fibula head fragment as well as traction force.
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