Acute compartment syndrome of the forearm secondary to hematoma without direct trauma has been reported rarely. We report a case of acute compartment syndrome of the forearm following a hematoma after playing golf. A 55-year-old man felt pain in his left forearm while playing golf that gradually worsened. He could not continue to play and visited the emergency department of our hospital. The radial side of his left forearm was markedly swollen on presentation, and he suffered severe pain that worsened with ulnar flexion of the wrist; no paralysis or hypesthesia was observed. A hematoma in the brachioradialis was seen on magnetic resonance imaging, and radial compartment pressure was 120 mmHg. A diagnosis of acute compartment syndrome was made, and urgent fasciotomy was performed. The patient recovered with no dysfunction of the arm.
Keywords: Compartment syndrome; Decompression; Forearm; Golf; Hematoma.