Related Experiment Video
Updated: Jun 24, 2026
09:51
The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
Published on: September 7, 2022
Surface replacement arthroplasty of the hip
Aaron K Schachter1, Justin G Lamont
1Department of Orthopaedic Surgery, NYU Hospital for Joint Diseases, 301 East 17th Street, New York, NY 10003, USA.
Bulletin of the NYU Hospital for Joint Diseases
|March 24, 2009
Summary
Surface replacement arthroplasty (SRA) offers a promising alternative to total hip arthroplasty for younger patients with hip degeneration. Modern metal-on-metal SRA shows comparable mid-term results, though long-term data is still needed.
Area of Science:
- Orthopaedic Surgery
- Biomaterials Science
Background:
- Degenerative hip disease in young patients presents unique treatment challenges.
- Traditional total hip arthroplasty often yields suboptimal outcomes in younger individuals.
- Surface replacement arthroplasty (SRA) has re-emerged as a viable option for this demographic.
Observation:
- Surface replacement arthroplasty (SRA), initially developed decades ago, is experiencing a resurgence for treating young patients with hip degeneration.
- Modern metal-on-metal bearings in SRA demonstrate enhanced wear resistance compared to older metal-on-polyethylene designs.
Findings:
- Mid-term clinical studies indicate that metal-on-metal SRA provides results comparable to total hip arthroplasty.
- Long-term survival data for SRA is still under investigation.
Implications:
- Metal-on-metal SRA represents a viable alternative to total hip arthroplasty for younger patients requiring hip joint restoration.
- Further research is necessary to fully understand the long-term effects of elevated serum ion levels associated with metal-on-metal implants.
Related Concept Videos
01:16Bones of the Lower Limb: Femur and Patella
The femur is the body's longest and strongest bone spanning the thigh region. Its head articulates with the acetabulum of the hip bone to form the hip joint. A minor indentation on the medial side of the femoral head, called the fovea capitis, serves as the site of attachment for the ligament of the head of the femur. This weak ligament spans the femur and acetabulum and supports the hip joint. The narrowed region below the head is the neck of the femur. The inclination angle between the neck...
01:23Knee Joint
The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris group...
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris group...