Case report: meralgia paresthetica in a baseball pitcher.

We report a case of meralgia paresthetica occurring in an amateur baseball pitcher who experienced inguinal pain and dysesthesia in the anterolateral thigh during pitching practice. The lateral femoral cutaneous nerve was pushed up by the iliac muscle to the inguinal ligament at the sharp ridge of its fascia and ensheathed in the tendinous origin of the sartorius muscle. Neurolysis of the lateral femoral cutaneous nerve and partial dissection of the inguinal ligament and sartorius muscle promptly relieved the symptoms and the patient resumed pitching 1 month later. These anatomic variations of the lateral femoral cutaneous nerve in the inguinal region might render the nerve susceptible to compression and irritation, and repetitive contraction of inguinal muscles during throwing motion might induce and exacerbate the neuropathy of the lateral femoral cutaneous nerve.