Ultrasound‐Guided Nerve Hydrodissection for Sural Nerve Injury: A Case Report and Review of the Literature

Sural nerve entrapment is a relatively uncommon cause of lateral ankle and foot pain and sensory disturbance. Conventional management generally lacks direct, targeted intervention at the site of nerve injury. We report a case of a 33‐year‐old male patient who developed sural neuropathy secondary to a right ankle sprain. Diagnosis was confirmed by electromyography (EMG) and high‐resolution musculoskeletal ultrasonography (US). The patient underwent two sessions of ultrasound‐guided perineural hydrodissection, achieving over 80% pain relief posttreatment, with sustained stability during follow‐up. This case highlights the diagnostic synergy of EMG and US in peripheral nerve entrapment syndromes, enabling precise diagnosis and anatomical localization of the entrapment site. It also supports ultrasound‐guided hydrodissection as a precise, safe, minimally invasive, and effective therapeutic intervention that may obviate the need for invasive surgery.