Correlations of isokinetic measurements with tendon healing following open repair of rotator cuff tears

Abstract

The aim of this study was to investigate the correlation of tendon integrity following open cuff repairs with functional and isokinetic strength measurements. Twenty-six shoulders of 25 patients were included in this study. At the final follow-up, 14 repairs (53.8%) were intact and 12 repairs (46.2%) had failed on magnetic resonance imaging (MRI). Mean UCLA score at latest follow-up was 28.5 and mean Constant score was 80.3. Constant scores were found to be significantly low for the failed group. Age was found to be significantly related to failed repair. Fatty infiltration stage in the failed repair group was significantly high, and a strong positive correlation for both groups existed pre and postoperatively. When both groups were compared, the failed group was found to have significantly low measurements at extension and internal rotation. Despite high failure rates, functional results were satisfactory. Increased age and fatty infiltration stage decrease success.

A Systematic Review of Preoperative Fatty Infiltration and Rotator Cuff Outcomes

“…The study that reported a retear rate of 25%, Gerber et al, only had four patients with Goutallier grades of 2-4 [12]. In the other eight included studies, the average retear rates for shoulders with preoperative Goutallier grades of 2-4 were 37% higher than the average retear rates for shoulders graded as 0 or 1 preoperatively [3,4,7,8,14,16,24,27]. Four studies provided data that allowed preoperative GC score to be correlated with postoperative Constant score [3,12,20,28] In the study by Grasso et al, the authors did not find a positive correlation between preoperative GC and postoperative function.…”

Full Thickness Tears

“…A recent systematic review has shown that double row repair methods lead to significant lower retear rate compared with single row and transosseous repairs, whereas no differences were recorded between arthroscopic and nonarthroscopic approaches. 85 Controversially, failure of healing and retears did not directly correlate with patients' satisfaction and overall functional recovery. 83 However, healing of the tendon can affect postoperative strength, as shown in patients over the age of 65 years who underwent RCT repair in whom, when the tendons healed, the Constant score and the results of the simple shoulder tests were similar to those reported by individuals with an intact rotator cuff.…”

“…8,15,50,51 Arthroscopic debridement and partial repair can be considered to reduce symptoms and increase function, with deterioration of the results over time. 80,84,85 Surgical techniques have evolved to reduce morbidity and increase both clinical and anatomical results, but the results of the most recent studies are similar to the ones presented in the 1990s, with clinical results outcomes not directly matching imaging results. 80,84,85 Surgical techniques have evolved to reduce morbidity and increase both clinical and anatomical results, but the results of the most recent studies are similar to the ones presented in the 1990s, with clinical results outcomes not directly matching imaging results.…”

Contractile property measurement of the torn supraspinatus muscle using real-time tissue elastography

“…Rerupture rates are higher in rotator cuffs with advanced fatty degeneration. [3][4][5]7,8,11,14,16,18,23,26 Fatty infiltration into the muscle is accompanied by fibrosis. 10 This pathologic change may explain the lower contractile property of the fatty degenerated muscle.…”