ID: 202084 An Atypical Presentation of Infrapatellar Saphenous Neuralgia: A Case Report

Abstract

Persistent anteromedial knee pain due to injury to the infrapatellar branch of the saphenous nerve is not uncommon after knee surgeries and trauma. However, it is unusual for a patient to develop lateral knee pain and numbness from infrapatellar saphenous neuralgia as the saphenous nerve’s sensory distribution is more medial. We discuss a case where a 28-year-old man presented with three months of burning left lateral knee pain and numbness after an unknown mechanism of injury to his knee while playing basketball. Prior to presentation, the patient completed physical therapy and underwent a pes anserine bursa injection with minimal relief of pain. On exam, palpation of a small, localized area of tenderness over the anteromedial left knee elicited lateral infrapatellar knee pain. The patient had full strength and intact sensation to light touch except for a small area of numbness at the lateral infrapatellar left leg.