Partial-Thickness Tear of Supraspinatus and Infraspinatus Tendon Revisited: Based on MR Findings

Song, Sinhye; Lee, Seul Ki; Kim, Jee-Young

doi:10.3348/jksr.2021.0124

Cited by 2 publications

(2 citation statements)

References 65 publications

(95 reference statements)

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“…Magnetic resonance imaging (MRI) of the shoulder joint is the preferred diagnostic method for evaluating rotator cuff tears [ 1 , 2 , 3 , 4 , 5 , 6 ]. These tears can occur in the bursal surface, the articular surface, or the tendon intrasubstance [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Delaminated Tears of the Rotator Cuff: MRI Interpretation with Clinical Correlation

Kim

Lee

2023

Diagnostics

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(1) Background: A delaminated tear is described as a horizontal split in the tendon substance. This review summarizes the clinical and radiologic characteristics of delaminated tears of the rotator cuff. (2) Methods: Initial radiological characteristics of a delaminated tear include the horizontal component of a partial-thickness tear determined using magnetic resonance (MR) arthrography. As demonstrated using indirect MR arthrography, the tear gradually progresses to be defined as either horizontal intrasubstantial splitting of the bursal and articular layers or differential retraction of the bursal and articular layers. (3) Results: The existence of delaminated tears is a poor prognostic factor in functional and morphologic outcomes after the repair of rotator cuff tendons and many surgical techniques have been introduced to solve this problem. Although the presence of a delaminated tear does not affect the arthroscopic repair outcome, the presence of medium-to-large, retracted delaminated tears may be an adverse negative prognostic factor after single-row repair. (4) Conclusion: Advances in imaging and surgical techniques have improved the detection of delaminated rotator cuff tears. Preoperative identification of delaminated tears on magnetic resonance imaging is clinically important because tailored surgical repair techniques must be chosen for successful outcomes.

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Section: Introductionmentioning

confidence: 99%

Delaminated Tears of the Rotator Cuff: MRI Interpretation with Clinical Correlation

Kim

Lee

2023

Diagnostics

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“…Our experimental observations could explain the clinical or 2D (MR imaging, MR and CT arthrography) radiological extension of SST tears along the IST interface between the tendon and capsule while adherence at this interface appears weak at the IST insertion site [4,19,20]. The issue may also be uneven distribution of forces constraining the semicircular ligament and representing the real explanation behind rotator cuff tear genesis.…”

Section: Discussionmentioning

confidence: 73%

Mechanical strength of the rotator cuff and cable interface: A complete histological and biomechanical study

Fondin,

Miroir,

Guillin

et al. 2024

Preprint

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Purpose This study sought to evaluate the biomechanical properties of the interface between the rotator cuff and the semicircular humeral ligament or rotator cable (RCa) using histological and biomechanical techniques.Methods Out of 13 eligible cadaver specimens, 5 cadaver shoulders with an intact rotator cuff were included, 8 were excluded due to an injured rotator cuff. The histological study enables us to describe the capsule-tendon interface between the infraspinatus tendon (IST) or supraspinatus tendon (SST) and RCa, and to detect loose connective tissue layers to determine their precise location and measure their length along the interface. The biomechanical study sought to characterize and compare the mechanical strength of the IST-RCa versus SST-RCa interfaces.Results The average thickness of the RCa was 1.44 +/- 0.20 mm. The histological study revealed a loose connective tissue layer at the IST-RCa interface, a finding not observed at the SST-RCa interface. The biomechanical study showed that the rigidity of the SST-RCa interface (72.10− 2 N/mm) was 4.5 times higher than for the IST-RCa interface (16.10− 2 N/mm) and the average maximum forces reached were 19 N and 10.6 N for the SST-RCa and IST- RCa interfaces, respectively.Conclusion The IST-RCa interface consists of a loose connective tissue layer contrary to the SST-RCa interface. In parallel, two different groups in terms of the mechanical response were identified: the IST-RCa interface group had less rigidity and ruptured more quickly than the SST-RCa interface, therefore emerging as the most vulnerable interface and explaining a potential extension of rotator cuff tears.

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Partial-Thickness Tear of Supraspinatus and Infraspinatus Tendon Revisited: Based on MR Findings

Cited by 2 publications

References 65 publications

Delaminated Tears of the Rotator Cuff: MRI Interpretation with Clinical Correlation

Delaminated Tears of the Rotator Cuff: MRI Interpretation with Clinical Correlation

Mechanical strength of the rotator cuff and cable interface: A complete histological and biomechanical study

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