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Överskrift Piriformis syndrome: diagnosis, treatment, and outcome - a 10-year study
Upplaga 83(3)
Sidor 295-301
Överskrift Piriformis syndrome: diagnosis, treatment, and outcome - a 10-year study
Beskrivning OBJECTIVES: To validate an operational definition of piriformis syndrome based on prolongation of the H-reflex with hip flexion, adduction, and internal rotation (FAIR) and to assess efficacy of conservative therapy and surgery to relieve symptoms and reduce disability. DESIGN: Before-after trial of cohorts identified by operational definition. SETTING: Outpatient departments of 2hospitals and 4 physicians' offices. Surgery performed at 3 hospitals. PATIENTS: Consecutive sample of 918 patients (1014 legs) with follow-up on 733. INTERVENTION: Patients with significant (3 standard deviations (SDs)) FAIR tests received injection, physical therapy, and serially reported pain and disability assessments. Forty-three patients (6.47%) had surgery. MAIN OUTCOME MEASURES: Likert pain scale. Subjective estimates of disablement in activities of daily living and instrumental activities of daily living. RESULTS: At 3 SDs, the FAIR test had sensitivity and specificity of .881 and .832, respectively. Seventy-nine percent (514/655) of FAIR test positive (FTP) patients improved 50% or more from injection and physical therapy at a mean follow-up of 10.2 months. Average improvement was 71.1%. Of 385 FTP patients with disability data, mean disabilityfell from 35.37% prestudy (SD = .2275) to 12.96% poststudy (SD = .1752), a 62.8% improvement. Twenty-eight surgical FTP patients (68.8%) showed 50% or greater improvement; mean improvement was 68% at a mean follow-up of 16 months. Surgery reduced the mean FAIR test to 1.35 +/- 2.17 months postoperatively. FTP patients generally improved 10% to 15% more than others after conservative treatment. CONCLUSIONS: The FAIR test correlates well with a working definition of piriformis syndrome and is a better predictor of successful physical therapy and surgery than the working definition.
Källa Archives of Physical Medicine & Rehabilitation
Publicerad 2002 Mar
Författare Allen DG, Balnave CD, Davey DF, Fishman LM. Dombi GW. Michaelsen C. Ringel S. Rozbruch J. Rosner B. Weber C


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