# Multi-center study of use of the Exeter stem in Japan: a 10-year follow-up report

## TL;DR

A 10-year follow-up study in Japan found the Exeter stem used in hip replacements to be highly stable and effective over the long term.

## Contribution

This study provides long-term clinical evidence of the Exeter stem's performance in Japan, extending beyond typical follow-up periods.

## Key findings

- Femoral-side revision was required in only 14 out of 682 hips.
- No cases of aseptic stem loosening were observed.
- 15-year survival rate was predicted at 97.3%.

## Abstract

Since the introduction of the Exeter stem for clinical use in Japan in 1996, the number of stems used has continued to rise owing to its favorable results. We investigated the outcomes of patients who had previously undergone total hip arthroplasty with the Exeter stem in Japan with a 10-year + follow-up period.

This retrospective cohort study used clinical and radiographic data of 682 cases of primary total hip arthroplasty performed using the Exeter stem.

The mean postoperative follow-up period was 13.3 years. Femoral-side revision was required in 14 hips, with no cases of aseptic stem loosening-associated revision observed. Kaplan–Meier survival analysis predicted 97.3% 15-year survival when revision for any reason was used as the endpoint.

The obtained findings suggested the excellent long-term stability of the Exeter stem for primary total hip arthroplasty in Japan.