There is a broad range of possible causes of hip pain, including sports injuries, degenerative conditions, or repetitive strain injuries. With that in mind, some of such possible hip pain causes include the following: • Arthritis, including juvenile idiopathic arthritis, osteoarthritis (OA), psoriatic arthritis (PsA), and rheumatoid arthritis (RA) • Avascular necrosis, also referred to as osteonecrosis, which involves limited blood flow to the hip bone, causing the bone tissue to die • Bone cancer or leukemia • Bursitis, which involves inflammation in the bursae fluid sacs that cushion bones, muscles, and tendons in the hip joint • Dislocation or fracture • Hip labral tear • Hernia • Muscle or tendon strain • Osteomyelitis, or a bone infection • Osteoporosis • Sacroiliac (SI) joint inflammation, also known as sacroiliitis • Sciatica • Sprains • Synovitis, or inflammation of the synovium surrounding the hip joint • Tendinitis