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McKeown, Andrew DJ; Beattie, Rebekah F; Murrell, George AC; Lam, Patrick H

Biomechanical comparison of expanded polytetrafluoroethylene (ePTFE) and PTFE interpositional patches and direct tendon-to-bone repair for massive rotator cuff tears in an ovine model

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  • Medientyp: E-Artikel
  • Titel: Biomechanical comparison of expanded polytetrafluoroethylene (ePTFE) and PTFE interpositional patches and direct tendon-to-bone repair for massive rotator cuff tears in an ovine model
  • Beteiligte: McKeown, Andrew DJ; Beattie, Rebekah F; Murrell, George AC; Lam, Patrick H
  • Erschienen: SAGE Publications, 2016
  • Erschienen in: Shoulder & Elbow
  • Sprache: Englisch
  • DOI: 10.1177/1758573215601815
  • ISSN: 1758-5732; 1758-5740
  • Schlagwörter: Rehabilitation ; Physical Therapy, Sports Therapy and Rehabilitation ; Orthopedics and Sports Medicine ; Surgery
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  • Anmerkungen:
  • Beschreibung: <jats:sec><jats:title>Background</jats:title><jats:p> Massive irreparable rotator cuff tears are a difficult problem. Modalities such as irrigation and debridement, partial repair, tendon transfer and grafts have been utilized with high failure rates and mixed results. Synthetic interpositional patch repairs are a novel and increasingly used approach. The present study aimed to examine the biomechanical properties of common synthetic materials for interpositional repairs in contrast to native tendon. </jats:p></jats:sec><jats:sec><jats:title>Methods</jats:title><jats:p> Six ovine tendons, six polytetrafluoroethylene (PTFE) felt sections and six expanded PTFE (ePTFE) patch sections were pulled-to-failure to analyze their biomechanical and material properties. Six direct tendon-to-bone surgical method repairs, six interpositional PTFE felt patch repairs and six interpositional ePTFE patch repairs were also constructed in ovine shoulders and pulled-to-failure to examine the biomechanical properties of each repair construct. </jats:p></jats:sec><jats:sec><jats:title>Results</jats:title><jats:p> Ovine tendon had higher load-to-failure (591 N) and had greater stiffness (108 N/mm) than either PTFE felt (296 N, 28 N/mm) or ePTFE patch sections (323 N, 34 N/mm). Both PTFE felt and ePTFE repair techniques required greater load-to-failure (225 N and 177 N, respectively) than direct tendon-to-bone surgical repairs (147 N) in ovine models. </jats:p></jats:sec><jats:sec><jats:title>Conclusions</jats:title><jats:p> Synthetic materials lacked several biomechanical properties, including strength and stiffness, compared to ovine tendon. Interpositional surgical repair models with these materials were significantly stronger than direct tendon-to-bone model repairs. </jats:p></jats:sec>
  • Zugangsstatus: Freier Zugang