1. The Monk ‘Soft-top’ Endoprosthesis;Webb,1980
2. Disorders of the Patellofemoral Joint;Fulkerstone,1990
3. Mechanical and osteoarthritis of the patellofemoral joint;Maquet;Clin Orthop,1979
4. Patellectomy: a clinical study and biomechanical evaluation;Steurer;Clin Orthop,1979
5. Biomechanics masterclass: extensor mechanism of the knee;Amis;Current Orthop,1996