Equally good fixation of cemented and uncemented cups in total trapeziometacarpal joint prostheses.
Background and purpose Cup failure is a recognized problem in total trapeziometacarpal (TM) joint prostheses; it may be related to poor fixation, which can be revealed by radiostereometric analysis (RSA). We compared the early implant migration of cemented trapezium cups to that of uncemented screw...
| Publicado en: | Acta Orthopaedica Vol. 84; no. 1; pp. 98 - 106 |
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| Autores principales: | , |
| Formato: | equations & formulas pictorial research tables/charts Journal Article |
| Publicado: |
Medical Journals Sweden AB
Feb2013
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104314077&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104314077 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 17453674 1BVL jtl: Acta Orthopaedica issn: 17453674 maglogo: N pubinfo: dt: Feb2013 vid: 84 iid: 1 pid: 59195 pub: Medical Journals Sweden AB artinfo: ui: 104314077 85463980 10.3109/17453674.2013.765625 NLM23343372 104314077 ppf: 98 ppct: 8 formats: fmt: @attributes: type: P tig: atl: Equally good fixation of cemented and uncemented cups in total trapeziometacarpal joint prostheses. aug: au: Hansen, Torben Bæk Stilling, Maiken affil: Department of Orthopaedics, Section of Hand Surgery, and Orthopaedic Research Unit, Holstebro Regional Hospital, Holstebro, Denmark. sug: subj: Arthroplasty, Replacement Methods Thumb Surgery Radiostereometric Analysis Human Random Assignment Prospective Studies Descriptive Statistics Data Analysis Software Male Female Adult Middle Age Aged Tomography, X-Ray Computed Visual Analog Scaling T-Tests Mann-Whitney U Test Wilcoxon Signed Rank Test Fisher's Exact Test Confidence Intervals Wilcoxon Rank Sum Test Questionnaires Adult: 19-44 years Middle Aged: 45-64 years Aged: 65+ years Male Female ab: Background and purpose Cup failure is a recognized problem in total trapeziometacarpal (TM) joint prostheses; it may be related to poor fixation, which can be revealed by radiostereometric analysis (RSA). We compared the early implant migration of cemented trapezium cups to that of uncemented screw cups. Patients and methods In a prospective, parallel-group, randomized patient-blinded clinical trial, we included 32 hands in 28 patients (5 males) with a mean age of 58 (40-77) years and with Eaton stage-2 or -3 osteoarthritis of the trapeziometacarpal joint. Patients were randomized to surgery with a cemented DLC all-polyethylene cup (C) (n = 16) or an uncemented hydroxyapatite-coated chrome-cobalt Elektra screw cup (UC) (n = 16). Uncemented cups were inserted without threading of the bone. Stereoradiographs for evaluation of cup migration (primary effect size) and DASH and pain scores were obtained during 2 years of follow-up. Results The 2-year total translation (TT) was similar (p = 0.2): 0.24 mm (SD 0.10) for the C (n = 11) and 0.19 mm (SD 0.16) for the UC (n = 11). Variances were similar (p = 0.4). Judged by RSA, 2 UC cups and 1 C cup became loose (TT > 1 mm). Both UC cups were found to be loose at revision. Grip strength, pain, and DASH scores were similar between groups at all measurement points. Interpretation Early implant fixation and clinical outcome were equally good with both cup designs. This is the first clinical RSA study on trapezium cups, and the method appears to be clinically useful for detection of loose implants. pubtype: Academic Journal doctype: equations & formulas pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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