Unicompartmental Knee Arthroplasty
Unicompartmental Knee Arthroplasty - Related Videos
07:33
In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty
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Cited by 2 •
2023
This protocol presents a cadaveric study of a wireless sensor used in medial unicompartmental knee arthroplasty. The protocol includes the installation of an angle measuring device, standardized Oxford unicompartmental knee arthroplasty osteotomy, preliminary assessment of flexion-extension balance, and application of the sensor to measure flexion-extension gap pressure.
10:10
Reverse Total Shoulder Arthroplasty
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Cited by 5 •
2011
Reverse total shoulder arthroplasty is indicated for the treatment of conditions that cannot be treated with conventional arthroplasty or other procedures. These primarily include degenerative and incapacitating conditions with irreparable rotator cuff and loss of the normal biomechanical coupling of the shoulder.
12:01
Knee Exam
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2023
Source: Robert E. Sallis, MD. Kaiser Permanente, Fontana, California, USA The knee is a hinged joint that connects the femur with the tibia. It is the largest joint in the body, and due to its location in the middle of the lower leg, it is subjected to a variety of traumatic and degenerative forces. Examination of the knee can be quite complex, owing to the fact it is an inherently unstable joint held together by various ligaments and supported by menisci, which act as shock absorbers and...
10:35
Novel Diagnostics in Revision Arthroplasty: Implant Sonication and Multiplex Polymerase Chain Reaction
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Cited by 16 •
2017
Differential diagnostics in painful arthroplasty is crucial for treatment success. Joint aspiration is routinely performed preoperatively. Multiplex polymerase chain reaction of the joint aspirate and the sonication fluid, a feasible tool for quick pathogen detection from these samples is described.
04:22
Assessment of Knee Hyperalgesia in Mice using Pressure Application Measurement
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Cited by 2 •
2025
The protocol describes how to measure knee hyperalgesia in mice. We show examples in mouse models of acute knee pain as well as in models of osteoarthritis (OA).
FAQs
The procedure replaces the arthritic contacting surfaces with metal and polyethylene components that create a smooth interface for joint loading. Because treatment is confined to the affected compartment, healthy bone, cartilage, and the remaining compartments remain intact. When appropriate, retaining the cruciate ligaments also preserves native knee structures that contribute to functional movement after surgery.
Suitability depends on whether osteoarthritis is limited to a single knee compartment and whether the other compartments and relevant native structures can be preserved. The damaged area may be medial or lateral, so the disease location matters. Careful patient selection is essential because UKA is intended for compartment-limited disease rather than broadly distributed knee joint damage.
Alignment and implant positioning determine how forces pass through the resurfaced compartment and how the metal and polyethylene components recreate the joint surface. Errors can interfere with the intended load-bearing relationship and functional restoration. Consequently, technical accuracy is a major determinant of outcome, alongside selecting a patient whose arthritis remains limited to the appropriate compartment.
Unlike total knee arthroplasty, which is not described as limited to one compartment in the provided context, UKA addresses only the damaged compartment. This approach preserves healthy bone, cartilage, ligaments, and unaffected compartments, producing less tissue disruption. The distinction is clinically relevant when disease is localized and the remaining knee structures are suitable for retention.
The surgeon first addresses the arthritic joint surfaces within the involved medial or lateral compartment. Those surfaces are removed and replaced with metal and polyethylene components designed to recreate a smooth, load-bearing joint. During this reconstruction, healthy structures and, when appropriate, the cruciate ligaments are retained, limiting the operation to the compartment requiring treatment.
UKA is used for carefully selected patients with osteoarthritis confined to one compartment of the knee. Its intended clinical outcomes include pain relief and restoration of function while preserving unaffected joint structures. The procedure is especially relevant when compartment-limited disease, appropriate alignment, and accurate implant positioning allow the native knee anatomy to support the reconstruction.