Factors related to stress fracture after unicompartmental knee arthroplasty.

ABSTRACT:

Background/objective

Unicompartmental knee arthroplasty (UKA) is a low-invasive knee surgery that enables early recovery. Stress fracture of the medial tibial plateau (MTP) is a complication of UKA that prolongs treatment once it has occurred. We investigated factors affecting its occurrence.

Methods

The study subjects were 167 patients who underwent fixed-bearing UKA between 2009 and 2016 (45 men and 122 women of mean age 77 years, including 134 with osteoarthritis of the knee and 33 with spontaneous osteonecrosis). We measured bone mineral density, installation angle of the tibial component, and leg alignment in those patients who developed stress fracture within 3 months after UKA.

Results

Stress fracture did not occur in 155 patients (N group, 45 men and 110 women

SUBMITTER: Yokoyama M 

PROVIDER: S-EPMC6215959 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature