Orthopaedics A-12-year-old boy presents with chronic knee pain for 2 years. Knee X-ray is shown. Probable diagnosis: A Chronic osteomyelitis B Osteosarcoma C Rickets D Hyperparathyroidism 💡 Explanation A-12-year-old boy presents with chronic knee pain for 2 years. Knee X-ray is shown. Probable diagnosis: ✓ Correct Answer: B. Osteosarcoma