10 years 9 months old girl child developed menarche 2 weeks back, complaining of pain over anterolateral aspect of left hip area since last 3 days. Pain is present throughout the day, non radiating, aggravates on walking; her mother developed menarche at age of 11 years. On examination -thin built, pallor +  No local rise of temperature, no tenderness, no redness..

pain aggravates on flexion of hip joint. Kindly help in diagnosis, antalgic gait.