Eric A Branch1, Charles Milchteim1, Bradley S Aspey1, Wei Liu2, Justin D Saliman3, Adam W Anz4. 1. Andrews Research and Education Institute, Gulf Breeze, Florida, USA. 2. Department of Kinesiology, College of Education, Auburn University, Auburn, Alabama, USA. 3. Cedars-Sinai Orthopaedic Center, Los Angeles, California, USA. 4. Andrews Research and Education Institute, Gulf Breeze, Florida, USA anz.adam.w@gmail.com.
Abstract
BACKGROUND: Radial tears of the meniscus represent a challenging clinical scenario because benign neglect and partial meniscectomy have both been shown to have negative biomechanical and long-term clinical consequences. HYPOTHESIS: Complex suture repair constructs have higher failure loads and stiffness values compared with simple constructs. STUDY DESIGN: Controlled laboratory study. METHODS: After radial transection of human cadaveric menisci, simulated tears were repaired arthroscopically by use of 1 of 4 repair constructs: (1) 2 inside-out horizontal sutures, (2) 2 all-inside horizontal sutures, (3) an all-inside Mason-Allen construct consisting of 4 sutures, or (4) an all-inside construct consisting of a figure-of-8 suture plus 1 horizontal suture. Meniscus specimens were harvested and tested to failure on an Instron machine. The Kruskal-Wallis test was used to evaluate for significance of maximal failure load and stiffness between groups. RESULTS: The mean maximum failure loads were 64 ± 20 N (inside-out horizontal construct), 75 ± 16 N (all-inside horizontal construct), 86 ± 19 N (Mason-Allen construct), and 113 ± 22 N (figure-of-8 plus horizontal construct). Interconstruct comparison revealed a statistically significant difference between the figure-of-8 plus horizontal construct and all 3 remaining constructs (P < .02) as well as the Mason-Allen construct when compared with the inside-out horizontal construct (P < .01). Statistical significance was not found between the all-inside horizontal construct and the Mason-Allen construct or between the all-inside horizontal construct and the inside-out horizontal construct (P = .2 and .7, respectively). Stiffness values were lower for the inside-out construct compared with the all-inside constructs (P < .05). CONCLUSION: Complex all-inside repair constructs had significantly higher failure loads than a conventional, simple inside-out suture repair construct for repair of radial meniscal tears. Stiffness values among the all-inside groups were greater than those for the inside-out group. CLINICAL RELEVANCE: Arthroscopic techniques are presented to produce stronger radial meniscal tear repairs.
BACKGROUND: Radial tears of the meniscus represent a challenging clinical scenario because benign neglect and partial meniscectomy have both been shown to have negative biomechanical and long-term clinical consequences. HYPOTHESIS: Complex suture repair constructs have higher failure loads and stiffness values compared with simple constructs. STUDY DESIGN: Controlled laboratory study. METHODS: After radial transection of human cadaveric menisci, simulated tears were repaired arthroscopically by use of 1 of 4 repair constructs: (1) 2 inside-out horizontal sutures, (2) 2 all-inside horizontal sutures, (3) an all-inside Mason-Allen construct consisting of 4 sutures, or (4) an all-inside construct consisting of a figure-of-8 suture plus 1 horizontal suture. Meniscus specimens were harvested and tested to failure on an Instron machine. The Kruskal-Wallis test was used to evaluate for significance of maximal failure load and stiffness between groups. RESULTS: The mean maximum failure loads were 64 ± 20 N (inside-out horizontal construct), 75 ± 16 N (all-inside horizontal construct), 86 ± 19 N (Mason-Allen construct), and 113 ± 22 N (figure-of-8 plus horizontal construct). Interconstruct comparison revealed a statistically significant difference between the figure-of-8 plus horizontal construct and all 3 remaining constructs (P < .02) as well as the Mason-Allen construct when compared with the inside-out horizontal construct (P < .01). Statistical significance was not found between the all-inside horizontal construct and the Mason-Allen construct or between the all-inside horizontal construct and the inside-out horizontal construct (P = .2 and .7, respectively). Stiffness values were lower for the inside-out construct compared with the all-inside constructs (P < .05). CONCLUSION: Complex all-inside repair constructs had significantly higher failure loads than a conventional, simple inside-out suture repair construct for repair of radial meniscal tears. Stiffness values among the all-inside groups were greater than those for the inside-out group. CLINICAL RELEVANCE: Arthroscopic techniques are presented to produce stronger radial meniscal tear repairs.
Authors: Diego Costa Astur; Marcos Xerez; João Rozas; Pedro Vargas Debieux; Carlos Eduardo Franciozi; Moises Cohen Journal: Rev Bras Ortop Date: 2016-07-20
Authors: Benjamin B Rothrauff; Piya-On Numpaisal; Brian B Lauro; Peter G Alexander; Richard E Debski; Volker Musahl; Rocky S Tuan Journal: J Exp Orthop Date: 2016-09-13