FRACS Orthopaedic Exams
A ten-year-old boy presented with a two-month history of intermittent pain in the lateral aspect of the left lower extremity. The pain had been improving, but he still noticed it with deep palpation and with high impact activities such as running and jumping. The patient had no history of trauma, fevers, chills, night sweats, weight loss, or pain at night.
On examination, the patient had a full and painless active range of motion of the left hip, knee, and ankle. There was no erythema or warmth in the left lower extremity. Compared with the contralateral limb, the left limb had an increased width at the level of the proximal portion of the fibula and was mildly tender to palpation. No motor deficits, sensory deficits, or vascular abnormalities were present. Gait was normal.
What is the diagnosis and how should this lesion be treated?