CPT Long Stem

Product Description


The collarless, polished, double-taper design concept used in the CPT® Hip System has proven itself clinically in more than 25 years of use.¹  This distinctive design philosophy is based on the use of natural compressive forces to help ensure that the implant is firmly seated and wedged within the cement mantle.  The CPT System, in cobalt-chromium² and stainless steel,3,4 has achieved long-term clinical success since its introduction in the early 1990s.



In a multicenter clinical study, conducted in the U.K. with stainless steel prostheses, the revision rate for 1,867 CPT Hip arthroplasties performed by 31 surgeons was 1.4% at 7 years.  The most common reason for revision was

recurrent dislocation.  This ongoing study demonstrates good to excellent



midterm results with the CPT Stem.

Because of the strength of cobalt-chromium, offset options are provided without dimensional changes to the stem body below the osteotomy line.





Reduced neck geometry, larger head sizes, and Longevity® Crosslinked Polyethylene Liners provide enhanced range of motion and joint stability.






Following the same successful design criteria, the CPT Hip System also offers long stem components in seven sizes, including valgus neck options for revision applications.  The natural compressive forces that help lock the stem into the femoral canal also facilitate the impaction of allograft into bone defects, making the CPT Revision Stems ideal for both cemented revision and impaction grafting indications.





  1. Malchau et al. Prognosis of total hip replacement: update and validation of results from the Swedish National Hip Arthroplasty Registry 1979-1998.  Scientific Exhibition: 67th Annual Meeting of the American Academy of Orthopaedic Surgeons; March 15-19, 2000; Orlando, FL, USA
  2. Weidenhielm LRA, Mikhail WEM, Nelissen RGHH, Bauer TW. Cemented collarless (Exeter-CPT) versus cementless collarless (PCA) femoral components: a 2- to 14- year follow-up evaluation. J. Arthroplasty. October 1995; 10(5):592-597
  3. Yates P, Gobel D, Bannister GI. Collarless polished tapered stem: clinical and radiological follow-up over 5 years. J. Arthroplasty . February 2002; 17(2):189-195.
  4. Data on file at Zimmer.
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