Superficial peroneal nerve entrapment: The eyes do not see what the mind does not know

Abstract

Entrapment of the superficial peroneal nerve (SPN) is common, but it can remain unrecognized. Due to variable topography of the nerve, the symptoms may vary from pain, tingling, and numbness to weakness in the foot. Therefore, anatomical knowledge is essential for early diagnosis and successful management. We report two cases of SPN entrapment where treatment was delayed due to incorrect diagnosis or inadequate treatment strategy. Both the patients were managed successfully by ultrasound-guided hydrodissection around the SPN and injection of a local anesthetic mixed with corticosteroids. The case reports highlight the importance of ultrasound in the correct diagnosis and early intervention to avoid unnecessary suffering and sequelae of delayed treatment.

Keywords

• hydrodissection
• nerve entrapment
• peroneal neuropathies
• superficial peroneal nerve
• ultrasonography