Contribution of the olecranon to elbow stability: an in vitro biomechanical study.
Background: The amount of the olecranon that can be removed without substantially affecting the kinematics and stability of the elbow is controversial. The purpose of this study was to determine the effect of serial resections of the olecranon on elbow kinematics and stability.Methods: Eight fresh,...
| Publicado en: | Journal of Bone & Joint Surgery, American Volume Vol. 92; no. 4; pp. 949 - 958 |
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| Autores principales: | , , , , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Lippincott Williams & Wilkins
Apr2010
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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=105161666&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105161666 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00219355 1H2 jtl: Journal of Bone & Joint Surgery, American Volume issn: 00219355 maglogo: N pubinfo: dt: Apr2010 vid: 92 iid: 4 pid: 433 pub: Lippincott Williams & Wilkins place: Baltimore, Maryland artinfo: ui: 105161666 105161666 NLM20360520 2010611732 10.2106/JBJS.H.01873 NLM20360520 105161666 ppf: 949 ppct: 9 formats: tig: atl: Contribution of the olecranon to elbow stability: an in vitro biomechanical study. aug: au: Bell TH Ferreira LM McDonald CP Johnson JA King GJ Bell, Timothy H Ferreira, Louis M McDonald, Colin P Johnson, James A King, Graham J W affil: Department of Surgery, University of Western Ontario, London, ON N6A 4L6, Canada sug: subj: Elbow Joint Physiology Ulna Physiology Aged Biomechanics Cadaver Elbow Joint Radiography Female Human Diagnostic Imaging Male Ulna Radiography Ulna Surgery Range of Motion Tomography, X-Ray Computed Aged: 65+ years Female Male ab: Background: The amount of the olecranon that can be removed without substantially affecting the kinematics and stability of the elbow is controversial. The purpose of this study was to determine the effect of serial resections of the olecranon on elbow kinematics and stability.Methods: Eight fresh, previously frozen cadaver arms were mounted in an in vitro motion simulator, and kinematic data were obtained with use of an electromagnetic tracking system for active and passive motion. Flexion was studied in the varus, valgus, horizontal, and dependent positions. Custom-written three-dimensional computer navigation software was utilized to guide serial resection of the olecranon in 12.5% increments from 0% to 100%. A traditional triceps advancement repair was performed following each resection. Flexion angle, amount of olecranon resection, and active and passive motion measurements were compared.Results: Serial resection of the olecranon resulted in a significant increase in varus-valgus angulation with the arm in the varus (p < 0.04) and valgus (p = 0.01) orientations. Ulnohumeral rotation significantly increased in the varus (p < 0.001) and valgus (p < 0.007) orientations. Angular (p = 0.02) and rotational (p < 0.001) kinematics were greater with passive compared with active motion. There was no difference in elbow kinematics following olecranon resection with the arm positioned in the horizontal and dependent positions.Conclusions: Valgus-varus angulation and ulnohumeral rotation progressively increase with sequential excision of up to 75% of the olecranon. Elbow stability is progressively lost with sequential excision, with gross instability noted at resection of > or = 87.5% of the olecranon. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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