News | CPT stem demonstrates excellent results at 15 years follow up | Which Medical Device

In the debate about new technologies in hip replacement, it is important to remember the effectiveness of older implants: cemented polished tapers do very well. In a 15 year follow up study of Zimmer’s CPT implant published in this month’s Journal of Bone and Joint Surgery, the 16 year survivorship with re-operation for any reason was 80.7%. Only one of the original 191 stems was revised for aseptic loosening at a mean of 15.9 years.  The mean age of patients at operation was 64.5 years (21 to 85).

Reference

Burston BJ, Barnett AJ, Amirfeyz R, Yates PJ, Bannister GC. Clinical and radiological results of the collarless polished tapered stem at 15 years follow-up. J Bone Joint Surg Br. 2012 Jul;94(7):889-94.