1. Ahlback S (1968) Osteoarthrosis of the knee. A radiographic investigation. Acta Radiol Diagn (Stockh) Suppl 277:7–72
2. Beard DJ, Pandit H, Ostlere S, Jenkins C, Dodd CA, Murray DW (2007) Pre-operative clinical and radiological assessment of the patellofemoral joint in unicompartmental knee replacement and its influence on outcome. J Bone Joint Surg Br 89:1602–1607
3. Bellamy N, Buchanan WW, Goldsmith CH, Campbell J, Stitt LW (1988) Validation study of WOMAC: a health status instrument for measuring clinically important patient relevant outcomes to antirheumatic drug therapy in patients with osteoarthritis of the hip or knee. J Rheumatol 15:1833–1840
4. Callaghan JJ, Squire MW, Goetz DD, Sullivan PM, Johnston RC (2000) Cemented rotating-platform total knee replacement. A nine to twelve-year follow-up study. J Bone Joint Surg Am 82:705–711
5. Carr A, Keyes G, Miller R, O’Connor J, Goodfellow J (1993) Medial unicompartmental arthroplasty. A survival study of the Oxford meniscal knee. Clin Orthop Relat Res 295:205–213