Which progression best describes hip osteonecrosis?

Which progression best describes hip osteonecrosis?

• A. Gradual onset of pain, progressive stiffness, and possible joint collapse
• B. Acute septic arthritis with high fever
• C. Rapid improvement with rest and limited weight bearing
• D. Immediate relief with NSAIDs

Answer: (A)

Hip osteonecrosis occurs when the blood supply to the femoral head is compromised, leading to death of bone tissue and weakening of the structure. The typical course is insidious: patients often start with a gradual, activity-related groin or hip pain that slowly progresses, followed by increasing stiffness and reduced range of motion. As the disease advances, the weakened femoral head can subside or fracture under load, causing joint collapse and secondary arthritis. This slow, progressive trajectory with eventual possible collapse best fits the described pattern. Septic arthritis, in contrast, presents acutely with fever, swelling, a hot joint, and marked systemic symptoms. Relying on rest to improve symptoms is not characteristic of osteonecrosis, and pain tends to persist or worsen rather than rapidly improve with rest. Immediate relief with NSAIDs is unlikely in osteonecrosis; NSAIDs may offer symptomatic relief but do not alter the underlying progressive process.

Hip osteonecrosis occurs when the blood supply to the femoral head is compromised, leading to death of bone tissue and weakening of the structure. The typical course is insidious: patients often start with a gradual, activity-related groin or hip pain that slowly progresses, followed by increasing stiffness and reduced range of motion. As the disease advances, the weakened femoral head can subside or fracture under load, causing joint collapse and secondary arthritis. This slow, progressive trajectory with eventual possible collapse best fits the described pattern.

Septic arthritis, in contrast, presents acutely with fever, swelling, a hot joint, and marked systemic symptoms. Relying on rest to improve symptoms is not characteristic of osteonecrosis, and pain tends to persist or worsen rather than rapidly improve with rest. Immediate relief with NSAIDs is unlikely in osteonecrosis; NSAIDs may offer symptomatic relief but do not alter the underlying progressive process.