A Cannulated Tri-Tapered Femoral Stem for Total Hip Arthroplasty: Clinical and Radiological Results at Ten Years
Section snippets
Patients and Methods
A prospective clinical study of the Tri-taper femoral stem was commenced in 1997. Ethical committee and Medical Devices Agency approval was granted for the study. Patients with osteoarthritis of the hip, aged between 65 and 85 years and suitable for primary THA were eligible for participation. Patients with significant co-morbidities that could affect their recovery to independent mobility, or had a life expectancy of less than five years were excluded from the study. All patients provided
Results
At the ten-year time point, 22 patients (23 hips) had died, five patients (5 hips) had withdrawn from the study and two patients (2 hips) were lost to follow-up (at 5 and 9 years respectively). The average follow-up time was 8.9 years ± 2.2. All results from these patients, up to the point of loss from the study, were included in the final analysis. The reasons for patient withdrawal include: cancer (2 patients at 5.5 years and 9 years); psychiatric illness (2 patients at 1 year and 6 years) and after
Discussion
The design specification for the Tri-taper femoral stem sought to utilise a combination of design features that had been reported as beneficial. The long-term performance of the polished Roundback Charnley low-friction torque arthroplasty (Thackray, Leeds UK), and the Exeter Universal femoral component (Stryker, Mahwah, New Jersey) has supported the use of polished tapered cemented stems, fabricated from stainless steel 8., 9., 10..
The pilot study of the Tri-taper stem investigated the clinical
References (27)
- et al.
The Long-term results of the original Exeter polished cemented femoral component
J Arthroplasty
(2009) - et al.
Triple taper polished cemented stem in total hip arthroplasty. Rationale for the design, surgical technique, and 7 years of clinical experience
J Arthroplasty
(2001) - et al.
Periprosthetic bone remodelling using a triple-taper polished cemented stem in total hip arthroplasty
J Arthroplasty
(2010) - et al.
Total hip arthroplasty cemented femoral component distal stem centraliser. Effect on stem centralization and cement mantle
J Arthroplasty
(1995) - et al.
Five-year prospective clinical and radiological results of a new cannulated cemented polished Tri-taper femoral stem
J Bone Joint Surg (Br)
(2006) - et al.
Questionnaire on the perceptions of patients about total hip replacement
J Bone Joint Surg (Br)
(1996) - et al.
Clinical and radiographic evaluation of total hip replacement: a standard system of terminology for reporting results
J Bone Joint Surg Am
(1990) - et al.
Modes of failure of cemented stem-type femoral components
Clin Orthop
(1979) - et al.
Radiological demarcation of cemented sockets in total hip replacement
Clin Orthop
(1976) - et al.
Improved cementing techniques and femoral component loosening in young patients with hip arthroplasty. A 12-year radiographic review
J Bone Joint Surg (Br)
(1992)
Ectopic ossification following total hip replacement. Incidence and a method of classification
J Bone Joint Surg Am
Charnley low-frictional torque arthroplasty of the hip: 20-to-30 year results
J Bone Joint Surg (Br)
The use of the cemented Exeter Universal femoral stem in a District General Hospital. A minimum ten-year follow-up
J Bone Joint Surg (Br)
Cited by (1)
Minimum 10-Year Follow-Up of Total Hip Arthroplasty With a Collarless Triple-Tapered Polished Cemented Stem With Line-to-Line Implantation Using a Direct Anterior Approach
2022, Journal of ArthroplastyCitation Excerpt :However, the radiological evidence without aseptic loosening over a long follow-up period reinforced the advantage of creating an optimal compressive force by transfer of loading at the cement-bone interface according to the taper-slip principle. Among the available different designs of femoral component, the polished, tapered, and collarless stem, in which the design converts shear forces to radial compressive forces by allowing stem subsidence within the cement mantle, have excellent middle-term to long-term survivorship [4,22,24,25,62,65,66]. The ideal cement mantle thickness surrounding the femoral component also has remained a matter for debate.
One or more of the authors of this paper have disclosed potential or pertinent conflicts of interest, which may include receipt of payment, either direct or indirect, institutional support, or association with an entity in the biomedical field which may be perceived to have potential conflict of interest with this work. For full disclosure statements refer to http://dx.doi.org/10.1016/j.arth.2015.04.023.