Related Experiment Videos
Patellofemoral instability after total knee arthroplasty
Scott A Eisenhuth1, Khaled J Saleh, Quanjun Cui
1Department of Orthopaedic Surgery, University of Virginia Health System, Charlottesville, VA 22903, USA.
Clinical Orthopaedics and Related Research
|May 5, 2006
Summary
Patellofemoral instability after total knee arthroplasty (TKA) is a common cause of pain and revision surgery. Understanding causes, planning carefully, and using accurate imaging like CT scans can improve outcomes.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
Background:
- Complications of the extensor mechanism and patellofemoral joint are frequent after total knee arthroplasty (TKA).
- These complications are the leading cause of pain and revision TKA surgery, despite advances in techniques and implants.
Purpose of the Study:
- To emphasize the importance of understanding patellofemoral instability etiologies.
- To highlight the role of preoperative planning and meticulous surgical techniques in optimizing outcomes.
- To outline the evaluation and treatment strategies for patellofemoral instability post-TKA.
Main Methods:
- Evaluation of patellofemoral stability should commence intraoperatively.
- Postoperative assessment includes thorough history, physical examination, and radiographic studies.
- Computed tomography (CT) scans are crucial for accurate assessment of component positioning.
Main Results:
- Treatment is guided by the specific etiology of patellofemoral instability.
- Revision of components is necessary if malpositioning is identified.
- Soft tissue procedures are considered when components are well-positioned.
Conclusions:
- Meticulous preoperative planning and surgical technique are vital for managing patellofemoral instability after TKA.
- Accurate component positioning, assessed by CT scans, is key to successful treatment.
- Future advancements in prosthetic design and computer-assisted navigation may reduce the incidence of patellofemoral instability.
Related Concept Videos
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...
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...