Felix Porschke1, Marc Schnetzke2,3, Christoph Luecke2, Christel Weiss4, Stefan Studier-Fischer2, Paul Alfred Gruetzner2, Thorsten Guehring5. 1. BG Trauma Center Ludwigshafen at Heidelberg University Hospital, Ludwig-Guttmann-Straße 13, 67071, Ludwigshafen, Germany. felix.porschke@bgu-ludwigshafen.de. 2. BG Trauma Center Ludwigshafen at Heidelberg University Hospital, Ludwig-Guttmann-Straße 13, 67071, Ludwigshafen, Germany. 3. German Joint Center, Atos Clinic, Bismarckstraße 9-15, 69115, Heidelberg, Germany. 4. Department of Medical Statistics, Medical Faculty Mannheim of the University of Heidelberg, University Medicine Mannheim, 68167, Mannheim, Germany. 5. Department of Orthopedic Surgery, Paulinenhilfe, Diakonieklinikum Stuttgart, Rosenbergstraße 38, 70176, Stuttgart, Germany.
Abstract
INTRODUCTION: The interval slide procedure (IS) has been introduced to improve mobility in massive, retracted rotator cuff tears. As clinical studies showed controversial results, the benefit of the IS is still widely discussed. AIM: Aim of this study was to analyze the effect of IS procedure on tendon mobility in a fresh porcine cadaver model. MATERIALS AND METHODS: In 30 fresh porcine cadaver shoulders with artificial supraspinatus defect tendon mobility was tested by measuring the load (in N) during tendon reduction to the footprint at the greater tubercle using a sensor enhanced arthroscopic grasper (t1). In intervention group (N = 15) anterior IS (t2), posterior IS (t3) and intraarticular capsule release (t4) were successively performed, each followed by tendon mobility assessment. Tendon mobility of the control group (N = 15) was measured in same time schedule without intervention. RESULTS: Mobility did not differ between groups for native tendons (CG 28.0 ± 11.2 N vs. IG 26.6 ± 11.6 N; P = 0.75). IS procedure significantly improves mobility at about 25.2% (t1 26.6 ± 11.6 N vs. t4 19.9 ± 12.3 N; P < 0.001) compared to the native tendon and 34.1% compared to CG (CG 30.2 ± 13.7 N vs. 19.9 ± 12.3 N; P = 0.026). In posthoc analyzes, anterior IS (P < 0.001) and capsule release (P = 0.005) significantly increased mobility, whereas the posterior IS did not (P = 0.778). CONCLUSION: The IS procedure results in increased supraspinatus tendon mobility in fresh porcine cadaver shoulders. However, performing the posterior IS subsequent to the anterior IS no significant improvement of mobility has been observed.
INTRODUCTION: The interval slide procedure (IS) has been introduced to improve mobility in massive, retracted rotator cuff tears. As clinical studies showed controversial results, the benefit of the IS is still widely discussed. AIM: Aim of this study was to analyze the effect of IS procedure on tendon mobility in a fresh porcine cadaver model. MATERIALS AND METHODS: In 30 fresh porcine cadaver shoulders with artificial supraspinatus defect tendon mobility was tested by measuring the load (in N) during tendon reduction to the footprint at the greater tubercle using a sensor enhanced arthroscopic grasper (t1). In intervention group (N = 15) anterior IS (t2), posterior IS (t3) and intraarticular capsule release (t4) were successively performed, each followed by tendon mobility assessment. Tendon mobility of the control group (N = 15) was measured in same time schedule without intervention. RESULTS: Mobility did not differ between groups for native tendons (CG 28.0 ± 11.2 N vs. IG 26.6 ± 11.6 N; P = 0.75). IS procedure significantly improves mobility at about 25.2% (t1 26.6 ± 11.6 N vs. t4 19.9 ± 12.3 N; P < 0.001) compared to the native tendon and 34.1% compared to CG (CG 30.2 ± 13.7 N vs. 19.9 ± 12.3 N; P = 0.026). In posthoc analyzes, anterior IS (P < 0.001) and capsule release (P = 0.005) significantly increased mobility, whereas the posterior IS did not (P = 0.778). CONCLUSION: The IS procedure results in increased supraspinatus tendon mobility in fresh porcine cadaver shoulders. However, performing the posterior IS subsequent to the anterior IS no significant improvement of mobility has been observed.
Authors: Albert J Savage; Murray D Spruiell; Joseph M Schwertz; Gerald McGwin; Alan Eberhardt; Brent A Ponce Journal: Am J Sports Med Date: 2013-01-08 Impact factor: 6.202
Authors: Jae Hwa Kim; In Tae Hong; Keun Jung Ryu; Sun Tae Bong; Yoon Seok Lee; Jang Hwan Kim Journal: Am J Sports Med Date: 2014-09-03 Impact factor: 6.202