Authors
Sachiyuki Tsukada, Naoyuki Hirasawa, Masayoshi Saito, Masahiro Nishino, Takuya Kusakabe, Hiroyuki Ogawa
Published in
Journal of orthopaedic science : official journal of the Japanese Orthopaedic Association. Jun 25, 2025. Epub Jun 25, 2025.
Abstract
This study aimed to evaluate the minimum 10-year outcomes of total hip arthroplasty (THA) using the CentPillar-TMZF, a curved anatomic stem developed based on anatomical data from Japanese patients including those with hip dysplasia.
Among 331 consecutive THA procedures, the CentPillar-TMZF was implanted in 80 primary THAs (24 %) following standardized selection criteria based on preoperative CT data. X-rays taken at the 10-year follow-up were assessed to evaluate stem fixation and the degree of stress shielding. Kaplan-Meier survivorship was calculated, with revision for any reason as the endpoint.
Seventy-three of the 80 hips (91 %) were followed for 10 years or until revision surgery. In all hips followed more than 10 years, stem fixation was classified as bone-ingrown stable with first- or second-degree stress shielding. The survivorship rate, with revision as the endpoint, was 98 % (95 % CI 90 %-99 %) at 10 years. Before the 10-year follow-up, one patient required revision due to a periprosthetic fracture, and another required revision for dislocation.
In THA using CentPillar-TMZF, no aseptic loosening was observed until postoperative 10 years in patients whose femoral medullary canal shape was preoperatively determined to be compatible based on CT evaluation.
PMID:
40571524
Bibliographic data and abstract were imported from PubMed on 27 Jun 2025.
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