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2. ICLH arthroplasty of the knee 1968–1977;Freeman;J Bone Joint Surg,1978
3. Patellar instability after total knee arthroplasty;Grace;Clin Orthop,1988
4. Pathomechanics of the femoropatellar joint following total knee arthroplasty;Hofman;Clin Orthop,1987
5. Disorders of the patella;Insall,1984