PURPOSE: To report results on 144 cases following arthroscopic resection arthroplasty (ARA) with or without interposition for @entity625 . METHODS: Cases undergoing ARA for thumb @entity571 between 2004 and 2011 were prospectively enrolled (n  = 178). Data were collected before surgery and after surgery at 1, 3, 6, and 12 months and annually thereafter. @entity1 were excluded for less than 1-year follow-up or concomitant procedures that interfered with evaluation of the variable of interest (interposition). @entity1 acellular dermal matrix (GRAFTJACKET) was the most commonly used interposition. Outcomes on 19 cases of interposition using collagen bioimplant (OrthADAPT) and porous @entity17368 (Artelon) scaffolds were also reported. Comparative analyses were performed on 52 @entity1 with GRAFTJACKET interposition and on 73 without. Mean follow-up was 7.4 and 5.6 years with and without interposition, respectively. Descriptive statistics were evaluated on all baseline variables. Raw change scores of grip, pinch, and @entity158 outcomes were evaluated. Confounding variables at a significance level of P less than .05 were adjusted for in linear mixed models, and an analysis of covariance was employed through an unstructured type of variance-covariance matrix. RESULTS: Change scores from baseline to 1 year for the interposition group for @entity158 (numerical rating scale, 0-10), pinch, and grip was -5.8, 3.3, and 7, respectively, and -5.1, 2.1, and 9 for the noninterposition group. Postoperative mean satisfaction was 4.7 and 4.4 for the with- and without-interposition groups, respectively. There were 4 failures with and 2 without interposition. Artelon and OrthADAPT did poorly with unacceptably high failure rates. CONCLUSIONS: This study suggested that interposition is not necessary following ARA for thumb @entity625 . Because arthroscopic interposition of material contributes to health care costs in terms of @entity1 and facility costs without clear benefit to the @entity1 , routine use of expensive interposition products should be abandoned or carefully evaluated with a prospective randomized controlled trial. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.

Long-Term Outcome of Arthroscopic Resection Arthroplasty With or Without Interposition for Thumb Basal Joint XXXX .

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients', 'patient', 'Human'] @entity17368 :: ('MESH:C044690', 'Chemical') :: ['polyurethaneurea'] @entity625 :: ('MESH:D001168', 'Disease') :: ['basal joint arthritis'] @entity571 :: ('MESH:D010003', 'Disease') :: ['carpometacarpal osteoarthritis'] @entity158 :: ('MESH:D010146', 'Disease') :: ['pain']
@entity625 :: (MESH:D001168,Disease) :: ['Arthritis']
