1999, Number 4
An Med Asoc Med Hosp ABC 1999; 44 (4)
Lazcano MA, Sauri JC, Campos ALF
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ABSTRACTFrom May 1970 to May 1975 we performed 171 low friction arthroplasties. Forty-eight were in patients younger than 65. Ten patients died or were lost in follow-up. Forty two hips in 30 patients examined between March and May 1995 had a minimum follow-up of 20 years and a maximum of 25, average 21.5 years. Age of the patients ranged from 20 to 64, average 37.6 years. Twenty one of the procedures were done on the right and 21 on the left. Diagnoses included congenital dislocation of the hip 13, osteoarthritis 10, rheumatoid arthritis 10, ankylosing spondylitis 4, fractures 3, and avascular necrosis 2. Results: 28 hips without pain and normal motion. Normal gait in 26. Hodgkinson classification grade 0 in 4, grade I in 14, grade II in 6, grade III in 2, grade IV in 11. Zones 1 and 7 were most affected in the Gruen classification. Normal appearance according to Pacheco in 17, cavitations in 9, demarcations in 8, subsidence in 2, fracture of the cement tip in 1. Good results were obtained, particularly in hips with primary operations and good bone stock. Failures were most common into congenital dislocations with multiple previous operations and technical errors.