Abstract
This paper presents a case of peroneal nerve palsy due to fabella. The patient was a 67-year-old woman with right drop foot. She came to our hospital because of increasing pain and numbness in the left great toe and dorsum of the left foot. Conservative treatment was ineffective. MMT was as follows; tibialis anterior muscle 3 extensor hallucis longus 3+Tinel's sign was detected over the peroneal nerve at the level of the fabella. Motor conduction velocity of the left peroneal nerve across the fabella was 36.6 meters per second. The peroneal nerve was explored surgically and found to stretch over the lateral head of the gastrocnemius muscle bulging with a large fabella.
Two months after extirpation of the fabella and peroneal neurolysis, peroneal nerve palsy was completely cured.
