# Preoperative kinesophobia affects self‐perceived knee function and quality of life after patellar stabilising surgery

## TL;DR

This study shows that fear of movement before patellar surgery affects recovery and quality of life six months later.

## Contribution

The study identifies preoperative kinesophobia as a predictor of postoperative knee function and quality of life.

## Key findings

- 47% of patients had kinesophobia preoperatively, decreasing to 18% six months post-surgery.
- Preoperative kinesophobia was linked to worse postoperative knee function.
- Reduced kinesophobia correlated with improved quality of life (r = -0.605).

## Abstract

Kinesophobia is an important psychosocial construct to consider in rehabilitation of patients with patellar instability, in order to optimise their rehabilitation and ability to return to sport and an active lifestyle. Therefore, it is important to investigate the percentage of patients with kinesophobia before and 6 months after patella stabilising surgery. In addition to how it affects knee function and quality of life 6 months postoperatively.

A prospective cohort of 76 patients (mean age 22.8 years, 74% female) with patellar instability was included. Patients completed patient reported outcome measures (PROMs), including the Tampa scale of kinesophobia (TSK)‐13, International Knee Documentation Committee Subjective Knee Form (IKDC‐SKF) and Banff Patellofemoral Instability Instrument (BPII), preoperatively and 6 months postoperatively. Those with concomitant knee ligament injuries were excluded. Statistical analyses included paired sample t‐tests for score changes and Pearson's correlation for associations between variables.

Preoperative kinesophobia was reported in 47% of patients, decreasing to 18% at 6 months postsurgery. Significant improvements were noted in all PROMs, with the BPII showing the largest increase. Patients with preoperative kinesophobia reported worse knee function postoperatively. A strong negative correlation was found between changes in TSK‐13 and BPII scores (r = −0.605), indicating that reductions in kinesophobia were associated with improvements in quality of life. In multiple regression analyse only preoperative TSK scores remained an independent significant 138 predictor of postoperative kinesophobia, with a shared explained variance of 16%.

This study highlights the prevalence of kinesophobia in patients undergoing surgery for patellar instability and its effect on postoperative outcomes. While surgery restored mechanical stability, many patients continued to exhibit kinesophobia after surgery.

Level III.