Time elapsed from definitive diagnosis to surgery for osteonecrosis of the femoral head: a nationwide observational study in Japan.

ABSTRACT:

Objectives

This study documents the time elapsed from the diagnosis of osteonecrosis of the femoral head (ONFH) to surgery, exploring the factors that influence ONFH severity.

Design

Retrospective observational study of a nationwide database.

Setting

The Kaplan-Meier method with log-rank tests was applied to examine the period from definitive diagnosis of ONFH to surgery using any surgery as the end point. For bilateral cases, the date of the first surgery was the endpoint.

Participants

This study included 2074 ONFH cases registered in 34 university hospitals and highly specialised hospitals of the multicentre sentinel monitoring system of the Japanese Investigation Committee between 1997 and 2018.

Main outcome measure

The primary outcome was the time fr

SUBMITTER: Nakamura J 

PROVIDER: S-EPMC10982743 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature