INTRODUCTION: In the last decade, the number of patients undergoing surgical treatment for lumbar spinal stenosis (LSS), has significantly increased. The purpose of this study was to directly compare the relative improvement in self‐reported quality of life and function after surgical intervention for groups of patients with primary hip/knee osteoarthritis (H‐OA/K‐OA) and lumbar spinal stenosis surgery (LSS).
METHODS: We performed an observational cohort study of prospectively collected outcomes. Patients, following elective primary one‐ to two‐level spinal decompression (n=207) with fusion for FLSS, were compared with a cohort of patients who had undergone elective total hip (n=202) or total knee (n=253) arthroplasty (total joint arthroplasty [TJA]) for primary osteoarthritis. Medical Outcomes Study Short Form‐12, and a functional outcome (ODI, HSS and Harris) were used. Patents were obtained for prospective outcomes databases. The primary outcome measure was the relative change between preoperative and 1 and 2 years postoperative questionnaires. Data were analyzed with the t test and repeated measures analysis of variance (ANOVA).
RESULTS: Inclusion and exclusion criteria were independently applied, and matching was performed in a blinded fashion.
RESULTS: The three groups (FLSS/H‐OA/K‐OA) were equally matched with respect to mean age and sex. The preoperative data on the preoperative Mental and Physical scale of the SF‐12 we similiar in all (PS: 32,3 LSS, 33,2 H‐OK, 33,5 K‐OA; MS: 47,0 FL, 45,9 PTC, 46,2 PTR). At 1 year the improvement was similar in all groups (1 year PS: 40,3VFLSS, 44,2 H‐OA, 44 K‐OA p<0,01; MS: 53,5 LSS, 52,8 H‐OA, 53 PTR p<0,01) (2 years EF: 44,6 FL, 45,1 PTC, 44,5PTR p<0,01; EM: 53,0 FL, 52,9 K‐OA, p<0,01).
DISCUSSION: The results of this study show that surgical intervention for LSS can obtain and maintain improvement in self‐reported quality of life comparable to that of total hip and knee arthroplasty.