DOS 2016

118

· DOS Abstracts

Predictors of pain and physical function at 3 and 12

months after total hip arthroplasty

Sarah E Plews, Randi L. Nielsen, Søren Overgaard, Carsten Jensen

University of Southern Denmark, Institute of Clinical Research; University of

Southern Denmark, Institute of Clinical Research; Ortopeadic surgery and trau-

matology, Odense University Hospital; Ortopeadic surgery and traumatology,

Odense University Hospital

Background:

Few studies have combined preoperative patient-reported and

objective outcome measures to predict outcomes after total hip arthroplasty

(THA).

Purpose / Aim of Study:

to identify predictors of outcome 3 and 12 months

after THA

Materials andMethods:

A cohort of 107 consecutive patients with primary hip

osteoarthritis responded to Hip dysfunction and Osteoarthritis Outcome Score

(HOOS) questionnaires prior to and 3 and 12 months after THA. Preoperative

pain intensity; joint space width (JSW), age, gender, and body mass index

(BMI) were used to predict changes in pain and physical function after surgery.

Preoperative pain level scores were categorized into; none (76-100, reference),

mild (51-75), moderate (26- 50) and severe (0-25). Single and multilevel re-

peated measures random effects linear regression models (MLM) were used

Findings / Results:

Preoperative pain levels predicted improvement in post-

operative pain in such a way that patients with mild pain improved; 20 points

(95% CI: 2.5 to 36.8), while patients with moderate and severe pain improved;

32 (95% CI: 15.5 to 48.7) and 47 (95% CI: 29.3 to 64.3), points, respectively.

Preoperative pain also predicted improvements in postoperative physical func-

tion scores; mild improved; 18 (-2.6 to 38.3), moderate 26 (6.7 to 46.2) and

severe 44 points (23.2 to 64.9), respectively. Age, gender, BMI, and JSW had

no predictive value. The patients achieved the same postoperative level of pain

and function irrespective of pre- operative score.

Conclusions:

Preoperative pain predicted changes in pain and physical function

up to one year after THA. Such knowledge should be taken into consideration,

when assessing OA patients prior to surgery. This study provides useful insight

for clinicians, regarding the overall improvement patients can expect to achieve

following their total hip arthroplasty

No conflicts of interest reported

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