S94.02

Clinical Causes: Trauma or direct injury to the outer side of the foot or ankle, such as fractures or lacerations. Surgical complications involving procedures in the foot or ankle region. Repetitive stress or overuse injuries caused by prolonged activities or sports. Tight footwear or footwear that compresses the nerve over time. Tumors or cysts pressing against the nerve structure. Conditions causing swelling or inflammation in the foot, such as arthritis or infections.

Key Symptoms: Pain on the outer side of the foot, which may be sharp, burning, or numbness. Weakness in muscles controlling the movement of the toes and foot muscles. Loss of sensation or tingling in the outer part of the foot. Difficulty walking or maintaining balance due to foot weakness. Swelling or tenderness over the area where the nerve is injured. In some cases, visible deformity or abnormal foot posture.

Diagnosis Path: Diagnosis typically involves a detailed clinical examination by a healthcare professional, focusing on sensory and motor function tests of the foot. Imaging studies such as ultrasound or MRI may be utilized to identify associated soft tissue injuries, swelling, or nerve compression. Nerve conduction studies and electromyography (EMG) can help assess nerve function and confirm nerve injury. A thorough assessment aids in rule out other causes of foot pain and guides appropriate management.

Treatment Protocols: Rest and avoiding activities that worsen the symptoms. Ice application to reduce swelling and pain. Pain relievers and anti-inflammatory medications as prescribed. Physical therapy focused on strengthening foot muscles and improving flexibility. Use of orthotic devices or padding to alleviate pressure on the nerve. In some cases, corticosteroid injections to decrease inflammation. Surgical intervention may be necessary if conservative measures fail, especially in cases of nerve entrapment or compressive lesions.