Clinical results of conservative management in patients with full-thickness rotator cuff tear: a meta-analysis

Karasuyama, Masaki; Gotoh, Masafumi; Tahara, Keiji; Kawakami, Junichi; Madokoro, Kazuya; Nagamatsu, Tomohisa; Imai, Takaki; Harada, Nobuya; Kudo, Yuji; Shiba, Naoto

doi:10.5397/cise.2020.00031

Cited by 12 publications

(8 citation statements)

References 33 publications

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“…Rotator-cuff tears are the most frequent shoulder pathologies that cause pain and functional impairment 9 , 10 . Numerous authors have reported surgical methods and clinical outcomes of supraspinatus tendon repair 7 , 11 – 13 .…”

Section: Discussionmentioning

confidence: 99%

Deep-learning framework and computer assisted fatty infiltration analysis for the supraspinatus muscle in MRI

Ro¹,

Kim

Park

et al. 2021

Sci Rep

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Occupation ratio and fatty infiltration are important parameters for evaluating patients with rotator cuff tears. We analyzed the occupation ratio using a deep-learning framework and studied the fatty infiltration of the supraspinatus muscle using an automated region-based Otsu thresholding technique. To calculate the amount of fatty infiltration of the supraspinatus muscle using an automated region-based Otsu thresholding technique. The mean Dice similarity coefficient, accuracy, sensitivity, specificity, and relative area difference for the segmented lesion, measuring the similarity of clinician assessment and that of a deep neural network, were 0.97, 99.84, 96.89, 99.92, and 0.07, respectively, for the supraspinatus fossa and 0.94, 99.89, 93.34, 99.95, and 2.03, respectively, for the supraspinatus muscle. The fatty infiltration measure using the Otsu thresholding method significantly differed among the Goutallier grades (Grade 0; 0.06, Grade 1; 4.68, Grade 2; 20.10, Grade 3; 42.86, Grade 4; 55.79, p < 0.0001). The occupation ratio and fatty infiltration using Otsu thresholding demonstrated a moderate negative correlation (ρ = − 0.75, p < 0.0001). This study included 240 randomly selected patients who underwent shoulder magnetic resonance imaging (MRI) from January 2015 to December 2016. We used a fully convolutional deep-learning algorithm to quantitatively detect the fossa and muscle regions by measuring the occupation ratio of the supraspinatus muscle. Fatty infiltration was objectively evaluated using the Otsu thresholding method. The proposed convolutional neural network exhibited fast and accurate segmentation of the supraspinatus muscle and fossa from shoulder MRI, allowing automatic calculation of the occupation ratio. Quantitative evaluation using a modified Otsu thresholding method can be used to calculate the proportion of fatty infiltration in the supraspinatus muscle. We expect that this will improve the efficiency and objectivity of diagnoses by quantifying the index used for shoulder MRI.

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Section: Discussionmentioning

confidence: 99%

Deep-learning framework and computer assisted fatty infiltration analysis for the supraspinatus muscle in MRI

Ro¹,

Kim

Park

et al. 2021

Sci Rep

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“…Delaminated RCTs are mainly found in degenerative tears. 4,9,23 The reported incidence of delaminated RCTs is between 32% and 88%. 10 Boileau et al 2 reported delaminated tears in 32% of patients after arthroscopic repair of medium or large chronic full-thickness RCTs.…”

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confidence: 99%

A Propensity Score–Matched Comparison Between Knotless Layer-by-Layer and En Masse Suture Bridge Techniques for Delaminated Rotator Cuff Tears

2022

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Background: Because the articular layer is more prone to retraction than the bursal layer of the supraspinatus tendon, it is important to restore each layer anatomically while repairing delaminated rotator cuff tears (RCTs). Purpose: To compare clinical outcomes and tendon integrity between knotless layer–by–layer and conventional en masse repair techniques for delaminated RCTs. Study Design: Cohort study; Level of evidence, 3. Methods: We retrospectively reviewed data from 174 consecutive patients with delaminated RCTs treated by arthroscopic suture bridge repair. Only 115 patients with medium to large supraspinatus tears with delamination were included. The 33 patients treated using the knotless layer–by–layer technique (group 2) were matched 1:1 with patients treated using en masse repair with the suture bridge technique (group 1) based on propensity scores. Tendon thickness was measured on magnetic resonance imaging (MRI). Signal changes in the bursal, articular, and intratendinous layers were assessed using T2-weighted MRI. Results: Postoperatively, statistically significant improvements were seen in both groups compared with preoperatively functional scores. At the final follow–up, there was a statistically significant difference in the Constant score, which was higher in group 2 than in group 1 (91.4 ± 6.0 and 84.3 ± 16.4, respectively; P = .005). There was 1 case of a retear in each group, representing a 3% retear rate. Group 2 had thicker tendons than group 1 (6.9 ± 1.1 and 6.0 ± 1.2 mm, respectively; P = .017). On T2-weighted MRI, a low signal intensity in the articular layer was more common in group 2 ( P = .046). Conclusion: En masse repair using the suture bridge technique and the knotless layer–by–layer technique were both effective. Regarding tendon healing, no significant differences were seen in retear rates. However, superior results in terms of the Constant score, tendon thickness, and signal intensity in the articular layer were observed using the knotless layer–by–layer technique.

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“…Rotator cuff tear is a common disorder that causes severe pain and disability. 13,14,29 The goal of rotator cuff repair is to fix the ruptured tendon to the footprint, maintain mechanical stability during loading, and achieve secure biological tendon-to-bone healing. 26 Although surgical techniques and instrumentation have developed considerably in the past years, the failure rate of rotator cuff healing after repair is still high and an unsolved problem.…”

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confidence: 99%

Effect of a Porous Suture Containing Transforming Growth Factor Beta 1 on Healing After Rotator Cuff Repair in a Rat Model

et al. 2021

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Background: The healing failure rate after rotator cuff repair is considerably high. Purpose: To evaluate the effect of a porous suture containing transforming growth factor beta 1 (TGF-β1) on the sustained release of TGF-β1 and rotator cuff healing in a rat model. Study Design: Controlled laboratory study. Methods: A porous suture was developed, and its tensile strength was measured. TGF-β1 was delivered using the porous suture, and a TGF-β1 release test and human fibroblast proliferation assay were performed. For the animal experiment, 30 rats were randomly allocated into 3 groups (n = 10 each). A bilateral supraspinatus tendon tear was made in all the rats, and repair was performed. Group 1 received repair only; group 2, repair and a single injection of TGF-β1; and group 3, repair using the porous suture containing TGF-β1. Eight weeks after repair, biomechanical and histological analyses were performed. Results: The porous suture was successfully developed with mechanical properties compatible with the conventional suture, and the sustained release of TGF-β1 from the porous suture was confirmed. In addition, the cell proliferation assay confirmed the biological safety of the porous suture. In the animal experiment, group 3 biomechanically exhibited the largest cross-sectional area and the highest ultimate failure load and ultimate stress (all P < .05). Histological examination revealed that group 3 showed significantly better collagen fiber density and tendon-to-bone maturation than did groups 1 and 2 (all P < .05). Conclusion: The porous suture containing TGF-β1 could sustainedly and safely release TGF-β1, and its use during rotator cuff repair could improve rotator cuff healing, as assessed on the basis of the biomechanical and histological changes in the rat model in this study. Considering the effectiveness, safety, and convenience of the porous suture without extra effort in surgery, the findings of the present study will have a far-reaching effect on the treatment of rotator cuff tears. Clinical Relevance: The porous suture containing TGF-β1 might improve healing after rotator cuff repair.

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Clinical results of conservative management in patients with full-thickness rotator cuff tear: a meta-analysis

Cited by 12 publications

References 33 publications

Deep-learning framework and computer assisted fatty infiltration analysis for the supraspinatus muscle in MRI

Deep-learning framework and computer assisted fatty infiltration analysis for the supraspinatus muscle in MRI

A Propensity Score–Matched Comparison Between Knotless Layer-by-Layer and En Masse Suture Bridge Techniques for Delaminated Rotator Cuff Tears

Effect of a Porous Suture Containing Transforming Growth Factor Beta 1 on Healing After Rotator Cuff Repair in a Rat Model

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