Toni A, Sudanese A, Viceconti M, Montina P P, Ciaroni D, Calista F, Terzi S, Giunti A
Clinica Ortopedica dell'Università di Bologna.
Chir Organi Mov. 1992 Oct-Dec;77(4):405-11.
A total of 187 alumina screwed porous-ceramic coated sockets (An.C.A.), 48 screwed smooth-surfaced Lord sockets, and 251 cemented polyethylene sockets were radiographically evaluated at an average follow-up of 30, 51 and 96 months respectively. After 6 years the Lord prostheses revealed a 38% incidence of loosening, similar to that observed for cemented sockets 10-12 years after surgery. The An.C.A. prostheses revealed radiographic loosening equal to 12% (6 cases) in the first 50 implants, and only 0.7% in the remaining 137 cases: overall, the An.C.A. acetabular prosthesis revealed an index of radiographic loosening equal to 3.3% (7/187). To guarantee "osteointegration" of the porous coating of An.C.A. sockets optimal stability must be obtained when the prosthesis is screwed in. Because the mid-term follow-up for this clinical experience is relatively short (30 months), an opinion on the reliability of the screwed "porous" sockets must await confirmation.
分别对187个氧化铝螺纹多孔陶瓷涂层髋臼杯（An.C.A.）、48个螺纹光滑表面Lord髋臼杯和251个骨水泥聚乙烯髋臼杯进行了影像学评估，平均随访时间分别为30个月、51个月和96个月。6年后，Lord假体的松动发生率为38%，与术后10 - 12年观察到的骨水泥髋臼杯的松动发生率相似。An.C.A.假体在前50个植入物中的影像学松动率为12%（6例），在其余137例中仅为0.7%：总体而言，An.C.A.髋臼假体的影像学松动指数为3.3%（7/187）。为确保An.C.A.髋臼杯多孔涂层的“骨整合”，在拧入假体时必须获得最佳稳定性。由于该临床经验的中期随访相对较短（30个月），关于螺纹“多孔”髋臼杯可靠性的意见尚有待证实。
