Femoral stem taper geometry and porous coating in cementless direct anterior primary total hip arthroplasty

Matthew McCrosson; Jackson Broadfoot; Matthew Yeager; Ben Marquess; Mila Scheinberg; Sameer Naranje

doi:10.1016/j.jor.2023.11.009

Femoral stem taper geometry and porous coating in cementless direct anterior primary total hip arthroplasty

J Orthop. 2023 Nov 4:46:169-173. doi: 10.1016/j.jor.2023.11.009. eCollection 2023 Dec.

Authors

Matthew McCrosson¹, Jackson Broadfoot¹, Matthew Yeager¹, Ben Marquess¹, Mila Scheinberg¹, Sameer Naranje¹

Affiliation

¹ Department of Orthopaedic Surgery, University of Alabama at Birmingham, 1313th Street S, Ste 226, Birmingham, AL, 35205, USA.

PMID: 38031626
PMCID: PMC10682507 (available on 2024-12-01)
DOI: 10.1016/j.jor.2023.11.009

Abstract

Objective: This study aims to compare the clinical outcomes and complications between a fully coated, dual-tapered hip stem versus a proximally coated, triple-tapered hip stem in patients undergoing cementless direct anterior (DA) primary total hip arthroplasty (THA).

Methods: A retrospective analysis was conducted on patients who underwent primary THA with either a fully coated, dual-tapered hip stem or a proximally coated, triple-tapered stem with at least a 1-year follow up. Exclusion criteria included any patients that did not receive either femoral stem, those undergoing bilateral THA, those with a surgical approach other than DA, those with an indication other than osteoarthritis, avascular necrosis (AVN), or femoral neck fracture, and those that had a cemented femoral component. Complications and clinical outcomes were assessed. Statistical analyses were conducted to identify significant differences between the groups.

Results: A total of 95 patients were included in the study. The average ages for the dual-tapered and triple-tapered stem cohorts were 63.6 and 59.5, respectively (p = 0.168). At 1-year follow-up, no significant differences were seen between the groups in terms of ambulatory status, ROM, and patient satisfaction (p = 0.414, p = 0.106, and p = 0.126). 6 (18 %) of the patients receiving the dual-tapered, fully coated hip stem had at least one complication while 8 (13 %) of the triple-tapered, proximally coated hip stem patients did (p = 0.550).

Conclusion: Both hip stem cohorts demonstrated comparable clinical outcomes and complication rates in patients undergoing primary DA THA and we believe that either hip stem may be a reasonable choice for patients. Future studies with larger sample sizes and longer follow-up periods are warranted to validate these findings.

Keywords: Clinical outcomes; Direct anterior; Dual taper; Hip arthroplasty; Porous coating; Triple taper.