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Schindler, O.S. et al.

Oliver S. Schindler, W. Norman Scott, Giles R. Scuderi,

The practice of unicompartmental knee arthroplasty in the United Kingdom.

PURPOSE: To survey the current practice of unicompartmental knee arthroplasty (UKA) in the United Kingdom. METHODS: Questionnaires were sent to all 341 local members of the British Association for Surgery of the Knee to inquire into their practice of UKA, including clinical indications, preoperative investigations, surgical approach, preferences in implant design, and the role of UKA in relation to high tibial osteotomy. RESULTS: 56% of respondents performed less than 16 UKAs per year, whereas 16.5% performed over 30 per year. 89.5% of the respondents used anteroposterior radiographs as their main investigation tool. Only 30% and 16.5% used posteroanterior 30 degrees flexion and varus/valgus stress radiographs, respectively, despite being better investigation tools. 57% considered arthroscopy, despite its invasive nature. The main contra-indications to UKA were anterior cruciate ligament deficiency with instability (95%), focal grade-III osteoarthritis in the contralateral compartment (87%), and osteoporosis with rheumatoid arthritis (80.5%), but only 59% of respondents considered an inability to passively correct a pre-existing varus or valgus deformity as a contra-indication. 51.5% of respondents preferred minimally invasive approach, 96% preferred cemented fixation, and over two thirds used the mobile bearing design. 72% of respondents expressed preference for total knee arthroplasty over UKA in localised lateral compartment osteoarthritis. CONCLUSION: Modern UKA has gained popularity in properly selected patients with localised medial compartment osteoarthritis, provided the knee is not anterior cruciate ligament deficient and any deformity is passively correctable.[1]

References

The practice of unicompartmental knee arthroplasty in the United Kingdom. Schindler, O.S., Scott, W.N., Scuderi, G.R. J. Orthop. Surg. (Hong. Kong) (2010) [Pubmed]

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