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Instability is one of the most common causes of failure of total knee arthroplasty (TKA). The presentation can vary from pain to frank dislocation with the etiologies just as varied. Instability after TKA can be classified by where the instability occurs in the knee's arc of motion as well as the chronicity of the problem. Acute instability is related to intraoperative injuries or excessive release of important coronal stabilizers such as the medial collateral ligament in extension or the posterolateral corner in flexion. Chronic instability in extension is often related to varus/valgus malalignment. Chronic instability in flexion can be related to an undersized femoral component, excessive tibial slope, or excessive elevation of the joint line affecting the isometry of the collateral ligaments in midflexion. Recurvatum instability is a rare complication that often coincides with extensor mechanism dysfunction or neuromuscular disorders. When addressing instability after TKA, it is critical to determine the root cause of the problem as well as evaluate for other causes of pain such as infection or aseptic loosening. When revision surgery is warranted, it should follow the basic principles of restoring a neutral mechanical alignment, setting the appropriate component rotation, balancing the flexion and extension spaces, and restoring the height of the native joint line.
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Instability remains a common cause of failure in total knee arthroplasty. Although approaches for surgical treatment of instability exist, the target for initial stability remains elusive, increasing ...
The objectives of this study were to quantify increased utilization of resources in revision total knee arthroplasty (TKA) compared with primary TKA, determine preoperative factors that predict outcom...
The demand for total hip arthroplasty (THA), total knee arthroplasty (TKA), and unicompartmental knee arthroplasty (UKA) is growing rapidly because of the proven success of these procedures and an inc...
Patellar instability is a frequent cause of total knee arthroplasty (TKA) failure. In cases of post-arthroplasty patellar instability, the medial structures may be damaged. The objective of this study...
Recently, anatomical designs in total knee arthroplasty are introduced to address asymmetry of the resected tibia cutting surface. It is still not well known how much improvement would be achieved in ...
The purpose of this study is to evaluate long-term clinical and radiographic data between geometrically identical GVF and cross-linked polyethylene-bearing inserts in total knee arthroplas...
Different strategies of tourniquet application during elective primary total knee arthroplasty are thought to be associated with different outcomes. In that context, the study investigates...
To determine if there is a patient satisfaction preference of Total Knee Arthroplasty (TKA) vs Unicompartmental Knee Arthroplasty (UKA) in patients with bilateral knee osteoarthritis who u...
The purpose of this study is to assess the positioning of customized guides designed from patients X-Rays (Materialise X-Ray Knee Guides) using computed tomography in primary total knee ar...
Numerous studies have echoed the superior clinical outcomes of posterior-stabilized (PS) total knee arthroplasty compared to posterior cruciate-retaining (CR) total knee arthroplasty. The ...
Replacement of the knee joint.
Partial or total replacement of a joint.
Partial or total replacement of one or more FINGERS, or a FINGER JOINT.
Injuries to the knee or the knee joint.
Replacement for a knee joint.
Arthroplasty Joint Disorders Orthopedics Spinal Cord Disorders Orthopedics is the science or practice of correcting deformities caused by disease or damage to the bones and joints of the skeleton. This specialized branch of surgery may ...
Arthroplasty is a surgical procedure to restore the integrity and function of a joint. A joint can be restored by resurfacing the bones. An artificial joint (called a prosthesis) may also be used. Various types of arthritis may affect the joints. Osteo...
An anesthesiologist (US English) or anaesthetist (British English) is a physician trained in anesthesia and perioperative medicine. Anesthesiologists are physicians who provide medical care to patients in a wide variety of (usually acute) situations. ...