Can pre-operative intraarticular injection predict pain relief after total hip arthroplasty?

BMC Musculoskeletal Disorders

Research

Ines Unterfrauner¹  Thorsten Jentzsch¹  Patrick O. Zingg¹  Andrea B. Rosskopf²  Christian W. Pfirrmann²  Yann K. Meyer³ 

[1] Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland;Department of Radiology, Balgrist University Hospital, Zurich, Switzerland;Faculty of Medicine, University of Zurich, Zurich, Switzerland;

关键词: Pain;    Injection;    Steroids;    Anesthetics;    Local;    Hip;    Arthroplasty;   

DOI  :  10.1186/s12891-022-05969-4

 received in 2021-08-26, accepted in 2022-11-09,  发布年份 2022

来源: Springer

【 摘 要 】

BackgroundTo study if pain relief after injection and arthroplasty correlate.MethodsA retrospective cohort study included consecutive patients (n = 88; median age 64 (interquartile range (IQR) 22) years, 49 (56%) females) that received fluoroscopic-guided intra-articular hip injection with contrast agent, anaesthetic (diagnostic), and corticosteroid (therapeutic) before implantation of primary total hip arthroplasty. Pain scores were assessed pre-injection, post-injection after 15 min (diagnostic phase) at first clinical follow up (therapeutic phase; median 2 (IQR 2) months), and postoperatively (last follow up (median 15 (IQR 5) months)). Responders had reduction in pain score ≥ 20 (numeric rating scale 0–100) points. The primary outcome was the same (or inverse) response to injection and arthroplasty.ResultsThe median pain scores were higher pre-injection (68 (IQR 30) points) compared to the diagnostic phase (18 (IQR 40) points; p < 0.001), therapeutic phase (50 (IQR 40) points; p < 0.001), and post-operatively (2 (IQR 15) points; p < 0.001). On the one hand, 69 (78%) cases had the same response in the diagnostic phase and post-operatively (rho = 0.58; p < 0.001; sensitivity 83%); on the other hand 32 (36%) cases had the same response in the therapeutic phase and post-operatively (rho = 0.25; p < 0.001; sensitivity 33%). Furthermore, 57% and 91% of patients had an even better response post-operatively than in the diagnostic and therapeutic phases.ConclusionsPre-operative intraarticular injection can predict pain relief after primary total hip arthroplasty. A positive response to hip arthroplasty may be better predicted by the response to local anaesthetic (diagnostic phase) than corticosteroids. Most patients (91%) with osteoarthritis may expect better pain relief after arthroplasty compared to the therapeutic phase after injection.

【 授权许可】

CC BY   
© The Author(s) 2022

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