1. Total condylar knee arthroplasty: 16- to 21-year results;Gill;Clin Orthop,1999
2. Arthroplasty and total joint replacement procedures: United States 1990–1997;American Association of Orthopedic Surgeons AAOS,1999
3. Total hip arthroplasties in the elderly: morbidity, mortality, and cost effectiveness;Boettcher;Clin Orthop,1992
4. Outcome of hip and knee arthroplasty in persons aged 80 years and older;Brander;Clin Orthop,1997
5. Total knee arthroplasty in patients 80 years of age and older;Hosick;Clin Orthop,1994