الفهرس 
Anatomy of the KneeOnly 14 pages are availabe for public view
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Abstract
The treatment of unicompartmental osteoarthrosis of the knee remains a challenge to the orthopedic surgeon. The causes are varied, and possible treatments are numerous.
When non-operative and arthroscopic procedures fail, the surgeon must resort to one of three main types of reconstruction: a tibial osteotomy, a unicompartmental replacement, or a total knee replacement.
Unicompartmental knee arthroplasty was introduced in the early 1970s as a treat¬ment option for osteoarthritis localized to one compartment.
Careful patient selection is critical for unicompartmental knee arthroplasty if reliable results are to be achieved. The disease should be predominantly confined to a single compartment.
Resurgence of the interest in the unicompartmental arthroplasty has occurred, particularly with the introduction of more physiologic new implant designs that have achieved acceptable long-term results.
Interest in the procedure was also stimulated by the introduction of the minimally invasive technique. A major advantage of a unicompartmental arthroplasty is that it can be performed through a relatively small incision which need not be extended into the quadriceps tendon. The minimally
invasive technique has the potential to reduce the morbidity, complications, and length of hospital stay.
Failure of a unicompartmental arthroplasty may occur as a result of inappropriate patient selection, poor soft-tissue balancing or malposition of the components. Revision to TKR is generally straightforward. Bone defects occur infrequently and can easily be reconstructed by available bone graft or the use of modular prostheses.
Advantages of UKA include preservation of uninvolved tissue and bone, reduced operative time, better range of motion, improved gait, and increased patient satisfaction.
With appropriate patient selection, careful surgical technique, and proper implant design, unicompartmental knee arthroplasty can now be viewed as a procedure with reliable medium- to long-term success.