Definition:

In a total hip replacement (also called total hip arthroplasty), the damaged bone and cartilage is removed and replaced with prosthetic components. The damaged femoral head is removed and replayed with a metal stem that is placed into a hollow center of the femur. A metal or ceramic ball is placed on the upper part of the stem. The damaged cartilage surface of the socket is removed and replaced with a metal socket.

Symptoms:

• Hip or groin pain
• Night hip or groin pain
• Hip stiffness
• Swelling, or tenderness in the hip joint
• A sound or feeling ("crunching") of bone rubbing against bone
• Inability to move the hip to perform routine activities such as putting on your socks

Causes:

• Osteoarthritis
• Femur fracture
• Rheumatoid arthritis
• Avascular necrosis
• Tumor

Treatment:

• Avoid internal rotation > 0°x 12 weeks
• Avoid adduction > 0° x 12 weeks
• Avoid hip flexion > 90° x 12 weeks
• Body mechanics education
• Passive, then active ROM
• Hip stabilization exercises
• Gait program
• Lower extremity strengthening