Document Detail

A biomechanical comparison of 2 transosseous-equivalent double-row rotator cuff repair techniques using bioabsorbable anchors: cyclic loading and failure behavior.
MedLine Citation:
PMID:  19664507     Owner:  NLM     Status:  MEDLINE    
PURPOSE: A novel double-row configuration was compared with a traditional double-row configuration for rotator cuff repair. METHODS: In 10 matched-pair sheep shoulders in vitro repair was performed with either a double-row technique with corkscrew suture anchors for the medial row and insertion anchors for the lateral row (group A) or a double-row technique with a new tape-like suture material with insertion anchors for both the medial and lateral rows (group B). Each specimen underwent cyclic loading from 10 to 150 N for 100 cycles, followed by unidirectional failure testing. Gap formation and strain within the repair area for the first and last cycles were analyzed with a video digitizing system, and stiffness and failure load were determined from the load-elongation curve. RESULTS: The results were similar for the 2 repair types. There was no significant difference between the ultimate failure loads of the 2 techniques (421 +/- 150 N in group A and 408 +/- 66 N in group B, P = .31) or the stiffness of the 2 techniques (84 +/- 26 N/mm in group A and 99 +/- 20 N/mm in group B, P = .07). In addition, gap formation was not different between the repair types. Strain over the repair area was also not different between the repair types. CONCLUSIONS: Both tested rotator cuff repair techniques had high failure loads, limited gap formation, and acceptable strain patterns. No significant difference was found between the novel and conventional double-row repair types. CLINICAL RELEVANCE: Two double-row techniques-one with corkscrew suture anchors for the medial row and insertion anchors for the lateral row and one with insertion anchors for both the medial and lateral rows-provided excellent biomechanical profiles at time 0 for double-row repairs in a sheep model. Although the sheep model may not directly correspond to in vivo conditions, all-insertion anchor double-row constructs are worthy of further investigation.
Jeffrey T Spang; Stefan Buchmann; Peter U Brucker; Panos Kouloumentas; Tobias Obst; Manuel Schröder; Rainer Burgkart; Andreas B Imhoff
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Publication Detail:
Type:  Comparative Study; Evaluation Studies; In Vitro; Journal Article    
Journal Detail:
Title:  Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association     Volume:  25     ISSN:  1526-3231     ISO Abbreviation:  Arthroscopy     Publication Date:  2009 Aug 
Date Detail:
Created Date:  2009-08-11     Completed Date:  2009-11-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8506498     Medline TA:  Arthroscopy     Country:  United States    
Other Details:
Languages:  eng     Pagination:  872-9     Citation Subset:  IM    
Department of Orthopaedics, University of North Carolina, Chapel Hill, North Carolina, USA.
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MeSH Terms
Absorbable Implants*
Equipment Failure
Implants, Experimental
Rotator Cuff / surgery*
Suture Anchors*
Suture Techniques
Tensile Strength

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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