Nooh A, Hart A, Tanzer M. Intermediate to Long-Term Outcomes of a Short, Tapered, Highly Porous, Proximally Coated Cementless Femoral Stem.
J Arthroplasty 2023:S0883-5403(23)00351-0. [PMID:
37044224 DOI:
10.1016/j.arth.2023.04.006]
[Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 03/31/2023] [Accepted: 04/03/2023] [Indexed: 04/14/2023] Open
Abstract
BACKGROUND
Short cementless stems in total hip arthroplasty have gained increasing popularity, yet on-going studies of many of these implants are lacking. The aim of this study was to evaluate the minimum 5 year clinical and radiological results of a short, highly porous single tapered-wedge cementless femoral implant.
METHODS
A retrospective study of 281 hips in 256 patients who had a minimum 5-year follow-up and underwent primary total hip arthroplasty (THA) between 2010 and 2016 were evaluated. Clinical and radiological results, complications, and the presence of postoperative thigh pain were evaluated.
RESULTS
The mean follow-up was 8 years (range, 5 to 12 years). Clinically, patients had significant improvement in the average patient related outcome scores (PROMS) postoperatively (Harris Hip Score: pre 47 vs post 95, University of California Los Angeles (UCLA) activity scale: pre 4 vs post 6, Western Ontario and McMaster Universities Arthritis Index (WOMAC): pre 51 vs post 3, SF-12 Physical Component Summary (PCS): pre 32 vs post 52, SF-12 Mental Component Summary (MCS): pre 49 vs post 55 (P<0.001)). Radiographic signs of ingrowth were present in all hips. There were three patients (1.1%) who developed transient thigh pain postoperatively, all of which resolved with non-operative management.
CONCLUSION
This study provides the longest follow-up of this short, highly porous single tapered-wedge cementless femoral stem in the literature. This short single wedge stem with its highly porous coating demonstrated reproducible bone ingrowth in all patients, and significant functional improvement with a very low rate of transient thigh pain.
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