Authors: T Stein J Buckup T Efe R von EisenhartRothe R Hoffmann E Zimmermann F Welsch
Publish Date: 2015/02/07
Volume: 135, Issue: 3, Pages: 369-382
Abstract
Twentyseven athletes mean age 269 years group 1 G1 were prospectively and longitudinally monitored after arthroscopic Bankart repair using the threeportal technique by magnetic resonance imaging MRI and specific clinical muscular testing The muscular integrity was assessed at the subscapularis SSC for the paratendinous anteroinferior portal the supraspinatus SSP for the transtendinous suprabicipital portal and the infraspinatus ISP for the transtendinous posterior portal Muscular atrophy was assessed by standardized ratios of transverse and vertical diameters for the SSC and ISP as defined by crosssectional area ratios for the SSP Fatty infiltration was assessed by signal intensity analysis for the upper and lower SSC SSP and upper ISP as a ratio with the lower ISP These parameters were analyzed for preoperative T0 1year T1 and 2year status T2 and compared to 27 healthy volunteers mean age 294 years group 2 G2The structural integrity assessments were performed after 148 T1 and 320 months T2 The SSC analysis revealed no muscular impairments in the upper and lower portions between T0 and T2 or compared to G2 MRI analysis for SSP and ISP showed full muscular recovery without any changes between T0 and T2 or deficits compared to G2 The number of preoperative dislocations had no influence on the muscular integrity MR analysis detected signs of overuse syndrome in 15 at T0 41 at T1 and 63 at T2 77 22 and 26 of patients at T0 T1 and T2 respectively were symptomaticArthroscopic Bankart repair using the threeportal technique prevents full muscular integrity for paratendinous anteroinferior portals at the SSC the transtendinous suprabicipital portal through the SSP and the transtendinous portal through the ISPThe authors thank for the assistance of Dr rer med Hanns Ackermann for analyzing the data The authors appreciate the support performing the MR imaging of all medical technical assistants of the Department for Diagnostic and Interventional Radiology of our hospital and our Department assistants Brigitte Mack and Gamze Tercan for assistance in collecting the data The Magnetic Resonance Imaging was partially financed by thirdparty funds the names of implants and company remain anonymous
Keywords: