MR Imaging of the Rotator Cuff

McCrum, Erin

doi:10.1016/j.mric.2019.12.002

Cited by 30 publications

(44 citation statements)

References 44 publications

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“…Magnetic resonance imaging (MRI) plays an important role in the evaluation and prognosis of rotator cuff injuries (1,2). Sher et al found the prevalence of supraspinatus (SSP) tendon tears by MRI to be 34% (3).…”

Section: Introductionmentioning

confidence: 99%

“…Sher et al found the prevalence of supraspinatus (SSP) tendon tears by MRI to be 34% (3). The large number of asymptomatic tears likely underestimates the true prevalence of rotator cuff tears (2). MRI informs on all of the rotator cuff individual tendons tear sizes, degeneration, inflammation, muscle atrophy and fat accumulation; all crucial information for surgical decision making (2,4).…”

Section: Introductionmentioning

confidence: 99%

“…The large number of asymptomatic tears likely underestimates the true prevalence of rotator cuff tears (2). MRI informs on all of the rotator cuff individual tendons tear sizes, degeneration, inflammation, muscle atrophy and fat accumulation; all crucial information for surgical decision making (2,4). Surgical repair of the SSP tendon is one of the most commonly performed orthopedic surgery, often for highgrade tears (5,6).…”

Section: Introductionmentioning

confidence: 99%

“…Tendons have a highly ordered structure due to type I collagen assembly into fibrils aggregating to form larger fiber bundle units aligning along the long axis of the tendon (2). Degenerated rotator cuff tendons show altered structure and biochemical composition at the enthesis: higher water content, decreased collagen content, collagen fiber disruption, and altered glycosaminoglycan accumulation (12)(13)(14)(15).…”

Section: Introductionmentioning

confidence: 99%

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Quantitative analysis of repaired rabbit supraspinatus tendons (± channeling) using magnetic resonance imaging at 7 Tesla

Trudel¹,

Duchesne-Bélanger²,

Thomas³

et al. 2021

Quant Imaging Med Surg

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Background: The quantitative assessment of supraspinatus tendons by conventional magnetic resonance is limited by low contrast-to-noise ratio (CNR). Magnetic resonance imaging (MRI) scanners operating at 7 Tesla offer high signal-to noise ratio (SNR), low CNR and high spatial resolution that are well-suited for rapidly relaxing tissues like tendons. Few studies have applied T2 and T2* mapping to musculoskeletal imaging and to the rotator cuff tendons. Our objective was to analyze the T2 and T2* relaxation times from surgically repaired supraspinatus tendons and the effect of bone channeling.Methods: One supraspinatus tendon of 112 adult female New Zealand white rabbits was surgically detached and repaired one week later. Rabbits were randomly assigned to channeling (n=64) or control (n=48) groups and harvested at 0, 1, 2, and 4 weeks. A 7T magnet was used for signal acquisition. For T2 mapping, a sagittal multi slice 2D multi-echo spin-echo (MESE) CPMG sequence with fat saturation was applied and T2* mapping was performed using a 3D UTE sequence. Magnetic resonance images from supraspinatus tendons were analyzed by two raters. Three regions of interest were manually drawn on the first T2-weighted dataset. For T2 and T2*, different ROI masks were generated to obtain relaxation times.Results: T2-weighted maps but not T2*-weighted maps generated reliable signals for relaxation time measurement. Torn supraspinatus tendons had lower T2 than controls at the time of repair (20.0±3.4 vs. 25.6±3.9 ms; P<0.05). T2 increased at 1, 2 and 4 postoperative weeks: 22.7±3.1, 23.3±3.9 and 24.0±5.1 ms, respectively, and values were significantly different from contralateral supraspinatus tendons (24.8±3.1; 26.8±4.3 and 26.5±3.6 ms; all P<0.05). Bone channeling did not affect T2 (P>0.05).Conclusions: Supraspinatus tendons detached for 1 week had shorter T2 relaxation time compared to contralateral as measured with 7T MRI.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Quantitative analysis of repaired rabbit supraspinatus tendons (± channeling) using magnetic resonance imaging at 7 Tesla

Trudel¹,

Duchesne-Bélanger²,

Thomas³

et al. 2021

Quant Imaging Med Surg

View full text Add to dashboard Cite

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“…MRI provides more comprehensive evaluation of the glenohumeral joint, including more accurate evaluation of articular cartilage and labroligamentous structures, factors that dictate conservative treatment, guide surgical management, and help set patient expectations [8]. However, MRI interpretation following rotator cuff repair can be challenging and requires familiarity with different types of RCT, their surgical treatments, normal postoperative MRI appearance, and complications [9]. In this study, we evaluated the severity of RCT according to MRI and analyzed the association between MRI evaluations and different shoulder outcome scores including University of California Los Angeles (UCLA) shoulder score, Constant-Murley scale, Shoulder Pain and Dysfunction Index (SPADI), and simplified shoulder functional testing (SST), in a bid to provide reference for diagnosis and management of RCT.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Resonance Imaging Classifications of Rotator Cuff Tear Are Associated with Different Shoulder Outcome Scores

Wang

Mao

et al. 2021

Journal of Nanomaterials

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Objective. Rotator cuff tear (RCT) accounts for 50% of shoulder injuries, leading to chronic pain and disability in the upper extremity. The study is conducted to investigate the association between resonance imaging (MRI) classifications of patients with RCT and different shoulder outcome scores. Methods. From September 2018 to October 2019, 112 patients underwent shoulder MRI at our institution and selected as eligible study subjects according to inclusion and exclusion criteria. Among these 112 patients, 69 cases had confirmed history of shoulder trauma and 43 cases were due to chronic shoulder joint pain. The shoulder function of patients was evaluated by University of California Los Angeles Shoulder (UCLA) score, Constant-Murley score, Shoulder Pain and Disability Index (SPADI), and simple shoulder test (SST). Results. Among the 112 patients, there were 34 cases, 58 cases, and 20 cases with MRI classifications at grades I, II, and III, respectively. There was no significant difference in the injured tendons in patients with different MRI classifications ( P > 0.05 ). The injury at the supraspinatus was more common. The scores of UCLA, Constant-Murley, and SST in patients with MRI grading at grade I were significantly higher than those at grades II and III ( P < 0.05 ), which were significantly higher in patients at grade II than those at grade III ( P < 0.05 ). SPADI score in patients with MRI grading at grade I was significantly lower than that at grades II and III ( P < 0.05 ), while there was no significant difference in SPADI score between patients at grades II and III ( P > 0.05 ). MRI classifications were negatively correlated with scores of UCLA, Constant-Murley, and SST ( P > 0.05 ). There was no significant correlation between MRI grade and SPADI scores ( P > 0.05 ). Conclusion. The supraspinatus tendon injury is more common in patients with RCT. MRI classifications were negatively correlated with scores of UCLA, Constant-Murley, and SST.

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Radiological Assessment of the Shoulder

Aydıngöz

2022

Fundamentals of the Shoulder

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MR Imaging of the Rotator Cuff

Cited by 30 publications

References 44 publications

Quantitative analysis of repaired rabbit supraspinatus tendons (± channeling) using magnetic resonance imaging at 7 Tesla

Quantitative analysis of repaired rabbit supraspinatus tendons (± channeling) using magnetic resonance imaging at 7 Tesla

Magnetic Resonance Imaging Classifications of Rotator Cuff Tear Are Associated with Different Shoulder Outcome Scores

Radiological Assessment of the Shoulder

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