Mechanisms of fatty degeneration in massive rotator cuff tears

2012 ◽  
Vol 21 (2) ◽  
pp. 175-180 ◽  
Author(s):  
Jason R. Kang ◽  
Ranjan Gupta
Keyword(s):  
Rotator Cuff ◽  
Fatty Degeneration ◽  
Rotator Cuff Tears ◽  
Massive Rotator Cuff Tears

Irreparable Large to Massive Rotator Cuff Tears With Low-Grade Fatty Degeneration of the Infraspinatus Tendon: Minimum 7-Year Follow-up of Fascia Autograft Patch Procedure and Partial Repair

2021 ◽  
pp. 036354652110435
Author(s):  
Daisuke Mori ◽  
Kazuha Kizaki ◽  
Noboru Funakoshi ◽  
Fumiharu Yamashita ◽  
Yasuyuki Mizuno ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Rotator Cuff ◽  
Clinical Outcomes ◽  
Fatty Degeneration ◽  
Rotator Cuff Tears ◽  
Low Grade ◽  
Partial Repair ◽  
Massive Rotator Cuff Tears ◽  
Infraspinatus Tendon

Background: In shoulders with irreparable massive rotator cuff tears (RCTs) with high-grade fatty degeneration (Goutallier stage 3 or 4) of the supraspinatus tendon and low-grade fatty degeneration (Goutallier stage 1 or 2) of the infraspinatus tendon (ISP), arthroscopic patch grafting (PG) has been reported as superior to partial repair (PR) regarding the ISP retear rate at short-term to midterm follow-up. However, the longer term outcomes are unclear. Purpose: To compare clinical and structural outcomes in the PG and PR groups at a minimum of 7 years postoperatively. Study Design: Cohort study; Level of evidence, 3. Methods: We evaluated 24 patients in the PG group and 24 patients in the PR group. We primarily used the Constant score for clinical outcomes and performed magnetic resonance imaging for structural outcomes in the PG and PR groups. The risk factors for a retear of the ISP were identified by univariate and multivariate (forward stepwise selection method) logistic regression analyses. We primarily compared values at midterm follow-up (<4 years) with values at the final follow-up (minimum 7 years) for each patient. Results: The mean midterm and final follow-up times for the PG group were 41.0 and 95.1 months, respectively, compared with 35.7 and 99.3 months, respectively, for the PR group. We found significant differences for the midterm and final follow-up Constant total scores in the PG and PR groups (midterm follow-up: 79.1 vs 69.9, respectively [ P = .001]; final follow-up: 76.0 vs 65.3, respectively [ P = .006]) and in the Constant strength scores (midterm follow-up: 14.6 vs 8.5, respectively [ P < .001]; final follow-up: 13.1 vs 8.3, respectively [ P = .001]). Treatment group (PR) was a significant predictor of an ISP retear in the logistic regression analysis (odds ratio, 3.545; P = .043). Conclusion: Patients with low-grade massive RCTs treated with PG or PR improved significantly in terms of clinical outcomes at the midterm and final follow-up time points. However, Constant scores were significantly better in the PG group at the final follow-up.

PDGFRα+ PDGFRß+ Progenitor Cells Contribute to Fatty Degeneration and Fibrosis Following Massive Rotator Cuff Tears in a Murine Model

2018 ◽  
Vol 27 (4) ◽  
pp. e137-e138
Author(s):  
Andrew R. Jensen ◽  
Benjamin V. Kelley ◽  
Gina Mosich ◽  
Allison Ariniello ◽  
Brandon K. Vu ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Progenitor Cells ◽  
Murine Model ◽  
Fatty Degeneration ◽  
Rotator Cuff Tears ◽  
Massive Rotator Cuff Tears

scholarly journals Clinical Outcomes of Arthroscopic Repair for Large or Massive Rotator Cuff Tear with Delamination: Comparison of Three Suture-Bridge Technique

2021 ◽  
Author(s):  
Atsushi Okubo ◽  
Tadahiko Yotsumoto ◽  
Nobuyoshi Watanabe ◽  
Teruyoshi Kajikawa ◽  
Shun Nakajima ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Clinical Outcomes ◽  
Double Layer ◽  
Rotator Cuff Tear ◽  
Fatty Degeneration ◽  
Rotator Cuff Tears ◽  
Suture Bridge ◽  
Cuff Tear ◽  
Massive Rotator Cuff Tears ◽  
The Mean

Abstract Background: Rotator cuff tear with delamination is considered as a risk factor for postoperative retear after rotator cuff repair. The purpose of this study was to compare clinical outcomes between 3 repair procedures for large or massive rotator cuff tears with delamination: conventional en masse suture bridge (EMSB), double-layer suture bridge (DLSB), and combination of double-layer suture bridge and modified Debyere-Patte (DLSB+DP) methods.Methods: A total of 53 shoulders of 52 patients who had large or massive rotator cuff tears with delamination were included. The patients were categorized into 3 groups: EMSB group comprised 18 patients, DLSB group comprised 24 shoulders of 23 patients, and DLSB+DP group comprised 11 patients. DP was applied for cases in which the rotator cuff was unable to be covered up to the footprint even though it was sufficiently mobilized. The mean postoperative follow-up period was 34.6 months (range, 24-72 months). Pre- and postoperative evaluations included the Constant scores and range of motion (ROM). Tendon integrity according to Sugaya classification, and fatty degeneration were also evaluated by magnetic resonance images (MRI).Results: The ROM significantly improved after the operation in all groups. Mean constant scores significantly improved (from 45.5±14.3 to 77.4±13.6, in the EMSB, from 45.5±11.6 to 87.6±11.4 in the DLSB, and from 46.3±11.2 to , and 88.0±10.5 in the DLSB+DP). Significant differences were noted in the postoperative Constant score (p<0.05: DLSB vs. EMSB , and p<0.05: DLSB+DP vs. EMSB)． The Constant pain score was better in the DLSB+DP than in the EMSB group. The mean pre-operative global fatty degeneration index was 1.52 in the EMSB group, 1.80 in the DLSB group, and 2.28 in the DLSB+DP group. Retear occurred in 27.8% in the EMSB group, 12.5% in the DLSB group, and 9.1% in the DLSB+DP group. Conclusions: Comparison of 3 groups demonstrated that DLSB and DLSB+DP achieved better clinical outcome than EMSB. DLSB+DP is useful for large or massive rotator cuff tears with severe fatty degeneration or for cases where presence of excessive tension is anticipated when repairing the torn cuff.

Suprascapular neuropathy in massive rotator cuff tears with severe fatty degeneration in the infraspinatus muscle

2016 ◽  
Vol 98-B (11) ◽  
pp. 1505-1509 ◽  
Author(s):  
B. Y. Kong ◽  
S. H. Kim ◽  
D. H. Kim ◽  
H. Y. Joung ◽  
Y. H. Jang ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Fatty Degeneration ◽  
Rotator Cuff Tears ◽  
Massive Rotator Cuff Tears ◽  
Suprascapular Neuropathy ◽  
Infraspinatus Muscle

scholarly journals Comparing Clinical Outcomes After Subacromial Spacer Insertion Versus Other Reconstruction Methods in the Treatment of Irreparable Massive Rotator Cuff Tears

2019 ◽  
Vol 7 (9) ◽  
pp. 232596711986960
Author(s):  
Joo Han Oh ◽  
Joo Hyun Park ◽  
Hyeon Jang Jeong ◽  
Sung-Min Rhee
Keyword(s):  
Rotator Cuff ◽  
Fatty Degeneration ◽  
Rotator Cuff Tears ◽  
Massive Rotator Cuff Tears ◽  
Reconstruction Methods ◽  
Functional Scores ◽  
Group 2 ◽  
Tear Size ◽  
Group 1

Background: Previous studies on subacromial spacer (SAS) insertion have been limited to case series that did not compare the effectiveness of this technique with other techniques. Hypothesis: Outcomes after SAS insertion for the treatment of irreparable massive rotator cuff tears (IMRCTs) will be similar to those of other techniques. Study Design: Cohort study; Level of evidence, 3. Methods: This retrospective study was based on data collected from patients who underwent correction of IMRCTs between January 2010 and October 2017. Group 1 patients (n = 17) received SAS insertion with or without partial repair; group 2 patients (n = 36) were treated with other techniques (isolated partial repairs or bridging grafts). Preoperative tear size and global fatty degeneration index values were evaluated. Range of motion, visual analog scale for pain, American Shoulder and Elbow Surgeons (ASES) score, Constant score, Simple Shoulder Test (SST), Disabilities of the Arm, Shoulder and Hand score, and acromiohumeral distance (AHD) were assessed preoperatively and at final follow-up at least 2 years after the surgery (range, 24-60 months). In both groups, ultrasonographic examination was performed at 3 and 6 months postoperatively, and magnetic resonance imaging (MRI) was performed at 1 year. Results: Tear size and preoperative global fatty degeneration index were not significantly different between the groups (all P > .05). There were no differences in functional scores between the groups at final follow-up (all P > .05). AHD was maintained at final follow-up in group 1 (mean ± SD: 6.2 ± 2.1 mm [postoperatively] vs 6.7 ± 2.3 mm [final follow-up]; P = .678), and there was no difference compared with group 2 (7.2 ± 3.2 mm; P = .244). Patients with retears in group 2 (23 of 36, 63.9%) had lower ASES ( P = .041) and SST ( P = .027) scores at final follow-up when compared with patients in group 1. Six patients (35.3%) in group 1 had partial repairs; these patients had better external rotation at 90° ( P = .047), better SST scores ( P = .036), and higher AHDs at final follow-up ( P = .046) than those in group 1 who had no repair. Three patients (50%) showed retears of partially repaired tendons on MRI. Of 13 patients (76.5%) in group 1 with postoperative MRI, 12 (92.3%) showed fibrotic tissue in the subacromial space not seen preoperatively. Conclusion: There was no difference in outcomes between SAS and the other reconstruction methods for treating IMRCTs. However, given the high retear rate associated with other techniques and poor functional outcomes after retear, SAS insertion could be a viable option for treating IMRCTs.

Arthroscopic Repair of Massive Rotator Cuff Tears With Stage 3 and 4 Fatty Degeneration

2007 ◽  
Vol 23 (4) ◽  
pp. 347-354 ◽  
Author(s):  
Stephen S. Burkhart ◽  
Johannes R.H. Barth ◽  
David P. Richards ◽  
Michael B. Zlatkin ◽  
Mitchell Larsen
Keyword(s):  
Rotator Cuff ◽  
Fatty Degeneration ◽  
Arthroscopic Repair ◽  
Rotator Cuff Tears ◽  
Massive Rotator Cuff Tears

scholarly journals Functional and Structural Outcomes After Retears of Arthroscopically Repaired Large and Massive Rotator Cuff Tears

2021 ◽  
Vol 9 (10) ◽  
pp. 232596712110357
Author(s):  
Suguru Tanaka ◽  
Masafumi Gotoh ◽  
Koji Tanaka ◽  
Yasuhiro Mitsui ◽  
Hidehiro Nakamura ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Outcome Measures ◽  
Functional Outcomes ◽  
Japanese Orthopaedic Association ◽  
Case Series ◽  
Fatty Degeneration ◽  
Rotator Cuff Tears ◽  
Massive Rotator Cuff Tears ◽  
The Mean ◽  
Tear Size

Background: Most studies have shown acceptable clinical results in patients with large or massive tears treated by arthroscopic rotator cuff repair (ARCR); however, the effects of retears after surgery in these patients remain unknown. Purpose: To evaluate functional and structural outcomes after retears of large and massive rotator cuff tears treated by ARCR. Study Design: Case series; Level of evidence, 4. Methods: A total of 196 consecutive patients with large to massive rotator cuff tears underwent physical examination and magnetic resonance imaging before and after ARCR at 6, 12, and 24 months. Of these, 9 patients were lost at 6 months after surgery. Therefore, 187 patients were followed up for 24 months after surgery; 148 patients showed no postsurgical ruptures. Consequently, the remaining 39 patients with postsurgical ruptures were included in this study (mean age at surgery, 64.2 ± 8.7 years). Functional outcome measures comprised the University of California, Los Angeles (UCLA) and Japanese Orthopaedic Association (JOA) scores. Structural outcome measures consisted of the global fatty degeneration index (GFDI), mediolateral tear size, and residual tendon attachment area as evaluated by our own scoring system. Results: The mean UCLA and JOA scores significantly improved from 16.3 ± 3.9 and 63.2 ± 10.7 preoperatively to 27.9 ± 5.5 ( P < .0001) and 84.5 ± 9.4 ( P < .0001) at final follow-up, respectively. The mean mediolateral tear size ( P = .03, .02, and .02, respectively) and residual tendon attachment area ( P = .04, .03, and .04, respectively) significantly improved from preoperatively to 6, 12, and 24 months postoperatively. The correlation analysis between the functional and structural variables confirmed significant associations between the residual tendon attachment area, the JOA and UCLA scores at 24 months postoperatively, and the preoperative GFDI ( r = –0.81 to 0.78). Conclusion: The residual tendon attachment area after a retear was significantly larger at 24 months after surgery than before surgery. In addition, significant associations were confirmed between preoperative fatty degeneration, the residual tendon attachment area, and functional outcomes after a retear. These results may explain why functional outcomes significantly improved even after retears in this series.

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