No correlations between radiological angles and self-assessed quality of life in patients with hip dysplasia at 2–13 years of follow-up after periacetabular osteotomy

Abstract

Background

Only few studies have described patients’ health-related quality of life (QoL) after periacetabular osteotomy (PAO). Thus, there is a lack of data on the self-assessed outcome of patients operated with PAO, and none of the existing studies correlate the results from Medical Outcomes Short Form-36 questionnaire (SF-36) with the radiological parameters.

Purpose

To investigate the health-related QoL for patients with hip dysplasia operated with PAO and to investigate whether QoL is associated with the acetabular angles or hypermobility.

Material and Methods

Out of 388 patients, 228 patients (mean age, 40.5 years; mean follow-up, 7.1 years) returned the SF-36 and Beighton questionnaires. The patient’s QoL was compared to reference data from a Danish population. Center-edge (CE) and acetabular index (AI) angles were measured before and after PAO and the association with the patients’ QoL was tested with logistic regression.

Results

For both men and women the postoperative SF-36 score was significantly lower than for the reference data for a Danish population, especially for those dimensions concerning physical health. No association was found between the patients’ CE or AI angles before or after PAO and their subsequent QoL. Significant associations were found between both Physical Component Score (PCS) and physical function (PF) and follow-up time after the operation. The adjusted OR for a PCS ≥ 50 was 0.87 (95% CI 0.76–0.99) and for a PF ≥ 85 0.81 (95% CI 0.71–0.91). No association between hyper mobility and PCS, PF, or bodily pain (BP) was found.

Conclusion

The physical components of QoL in patients undergoing PAO are significantly lower than the Danish population used as reference. Furthermore, the results suggest that physical function after PAO decreases with longer follow-up time. Neither the acetabular angles nor hypermobility is associated with the physical components of QoL.

Keywords

Periacetabular osteotomy health-related quality of life acetabular angles hypermobility

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