Buchhorn, Gottfried Hans

[["dc.bibliographiccitation.firstpage","106"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Clinical Biomechanics"],["dc.bibliographiccitation.lastpage","111"],["dc.bibliographiccitation.volume","22"],["dc.contributor.author","Klinger, Hans-Michael"],["dc.contributor.author","Steckel, Hanno"],["dc.contributor.author","Spahn, Gunter"],["dc.contributor.author","Buchhorn, Gottfried Hans"],["dc.contributor.author","Baums, Mike Herbert"],["dc.date.accessioned","2018-11-07T11:06:16Z"],["dc.date.available","2018-11-07T11:06:16Z"],["dc.date.issued","2007"],["dc.description.abstract","Background. In recent studies objective evaluations have demonstrated that arthroscopic rotator cuff repairs can have higher failure rates than open repairs. Thus, there is a need for a stronger tissue-holding stitch for arthroscopical repair. The purpose of this study was to compare the biomechanical properties of traditional open transosseous suture technique and modified Mason-Allen stitches versus double-loaded suture anchors and arthroscopic Mason-Allen stitches in rotator cuff repair. Methods. In 20 sheep shoulders the infraspinatus tendons were dissected from their insertion and were randomized to 2 repair groups: (1) repair with transosseous suture and modified Mason-Allen stitches, (2) repair with double loaded bioabsorbable suture anchors and arthroscopic Mason-Allen stitches: Both groups were coupled with braided, nonabsorbable polyester (Ethibond) suture sized USP No. 2. All repairs were cyclically loaded from 10 to 180 N with the use of a materials testing machine. The number of cycles to gap formation of 5 and 10 rum at the repair site and the mode of failure were recorded. Results. The number of cycles to 5-mm gap was mean 634 (SD 106) for group 1 and mean 750 (SD 107) for group 2 (P < 0.026). The corresponding values to 10-mm, gap were mean 1573 (SD 161) for group 1, and mean 1789 (SD 183 cycles) for group 2 (P < 0.012). In group 2 the mode of failure occurred by tissue pull-out, whereas in group 1 the failure occurred by a mixture of suture breakage and pull-out. Conclusions. This time-zero study demonstrates that the combination of bioabsorbable suture anchors and arthroscopic Mason-Allen stitches provides strength superior to that of the modified Mason-Allen transosseous suture technique under isometric cyclic loading conditions. However, additional evaluation is needed to examine the effects on the sustained strength of the repair throughout the healing process. (c) 2006 Elsevier Ltd. All rights reserved."],["dc.identifier.doi","10.1016/j.clinbiomech.2006.07.009"],["dc.identifier.isi","000243680700015"],["dc.identifier.pmid","16996666"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/52266"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Sci Ltd"],["dc.relation.issn","0268-0033"],["dc.title","Biomechanical comparison of double-loaded suture anchors using arthroscopic Mason-Allen Stitches versus traditional transosseous suture technique and modified Mason-Allen stitches for rotator cuff repair"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","769"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Arthroscopy The Journal of Arthroscopic and Related Surgery"],["dc.bibliographiccitation.lastpage","777"],["dc.bibliographiccitation.volume","28"],["dc.contributor.author","Baums, Mike Herbert"],["dc.contributor.author","Spahn, Gunter"],["dc.contributor.author","Buchhorn, Gottfried Hans"],["dc.contributor.author","Schultz, Wolfgang"],["dc.contributor.author","Hofmann, Lars"],["dc.contributor.author","Klinger, Hans-Michael"],["dc.date.accessioned","2018-11-07T09:09:51Z"],["dc.date.available","2018-11-07T09:09:51Z"],["dc.date.issued","2012"],["dc.description.abstract","Purpose: To investigate the biomechanical and magnetic resonance imaging (MRI)-derived morphologic changes between single- and double-row rotator cuff repair at different time points after fixation. Methods: Eighteen mature female sheep were randomly assigned to either a single-row treatment group using arthroscopic Mason-Allen stitches or a double-row treatment group using a combination of arthroscopic Mason-Allen and mattress stitches. Each group was analyzed at 1 of 3 survival points (6 weeks, 12 weeks, and 26 weeks). We evaluated the integrity of the cuff repair using MRI and biomechanical properties using a mechanical testing machine. Results: The mean load to failure was significantly higher in the double-row group compared with the single-row group at 6 and 12 weeks (P = .018 and P = .002, respectively). At 26 weeks, the differences were not statistically significant (P = .080). However, the double-row group achieved a mean load to failure similar to that of a healthy infraspinatus tendon, whereas the single-row group reached only 70% of the load of a healthy infraspinatus tendon. No significant morphologic differences were observed based on the MRI results. Conclusions: This study confirms that in an acute repair model, double-row repair may enhance the speed of mechanical recovery of the tendon-bone complex when compared with single-row repair in the early postoperative period. Clinical Relevance: Double-row rotator cuff repair enables higher mechanical strength that is especially sustained during the early recovery period and may therefore improve clinical outcome."],["dc.description.sponsorship","Deutsche Forschungsgemeinschaft [BA 3833/1-1]"],["dc.identifier.doi","10.1016/j.arthro.2011.11.019"],["dc.identifier.isi","000304444200007"],["dc.identifier.pmid","22321200"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/26360"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","W B Saunders Co-elsevier Inc"],["dc.relation.issn","0749-8063"],["dc.title","Biomechanical and Magnetic Resonance Imaging Evaluation of a Single- and Double-Row Rotator Cuff Repair in an In Vivo Sheep Model"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]