DOS 2016

DOS Kongressen 2016 ·

191

Pain reduction after periacetabular osteotomy

in the treatment of symptomatic acetabular hip

dysplasia.

Søren Reinhold Jakobsen, Stig Storgaard Jakobsen, Inger Mechlenburg, Kjeld

Søballe

Department of Orthopaedic Surgery, Aarhus University Hospital

Background:

Periacetabular osteotomy (PAO) corrects underlying anatomical

anomalies, reduces pain and may postpone onset of osteoarthritis in patients

with symptomatic hip dysplasia. Existing evidence is based on immediate post-

operative pain levels, but knowledge on pain levels corresponding to time after

PAO is scarce and the association between post-operative pain levels and the

degree of anatomical correction is unknown.

Purpose / Aim of Study:

To examine the pain level related to different time

points before and after surgery using VAS-score. Furthermore, to investigate

the association between post-operative pain levels and degree of anatomical

correction.

Materials and Methods:

Prospective data on 426 patients operated from June

2012 to November 2015 were analysed. 285 were included. Patients were in-

vited to answer standardized questionnaires pre-operatively, at 6 months and

2 years post-operatively. VAS-score at rest and at activity were applied as pain

measurements. Paired t-tests were applied to the pre- and postoperative pain

levels, and multiple regression analysis to the association between postopera-

tive pain levels and degree of anatomical correction.

Findings / Results:

We found a significant reduction of pain from pre-opera-

tive levels compared to 6 months post-operatively both at rest from 36.30 to

13.13 by 23.16 points [95% CI 20.31:26.02] (p<0.000) and during activity

from 71.24 to 38.02 by 33.22 points [ 95% CI 29.50:36.93]) (p<0.000). No

further reduction in pain was found from 6 months to 2 years follow-up. There

was no significant association between post-operative pain levels and degree of

anatomical correction (p=0.39).

Conclusions:

Patients undergoing PAO can expect a significant reduction in

pain both at rest and activity as early as 6 months after PAO surgery. No further

pain reduction may be expected the following 2 years after surgery.

No conflicts of interest reported

142.