Interactive Magnetic Resonance Image-Guided Aspiration Therapy of a Glenoid Labral Cyst

Winalski, Carl S.; Robbins, M I; Silverman, Stuart G.; Davies, John A.

doi:10.2106/00004623-200108000-00014

Cited by 12 publications

(6 citation statements)

References 24 publications

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“…Functional range of motion is also preserved in suprascapular nerve palsy, although weakness of abduction and external rotation is associated. [27][28][29][30][31] Currently, there are no data on the excursions of the humeral head for shoulders with structurally intact, but paralyzed rotator cuff muscles. Thus, the actual mechanism through which shoulder function can be maintained despite partial loss of rotator cuff function remains incompletely understood.…”

Section: Introductionmentioning

confidence: 99%

Effect of experimental suprascapular nerve block on active glenohumeral translations in vivo

Werner

Weishaupt

Blumenthal

et al. 2006

Journal Orthopaedic Research

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Static superior shoulder instability is associated with long-standing rotator cuff tears. Factors or mechanisms which can prevent superior migration of the humeral head, and therefore allow preservation or restoration of shoulder function despite nonanatomical cuff repair, are poorly understood. The question has therefore arisen, whether centering of the humeral head was the result of active shoulder muscle function. It was the goal of this experimental investigation to (1) determine the pattern of glenohumeral translations during active shoulder abduction measured by openmagnetic resonance imaging (MRI) techniques, and to (2) determine the influence of experimental paralysis of the infra-and supraspinatus muscles on these translations. In contrast to prior experimental investigations, the humeral head remained always centered in the glenoid fossa during active abduction. No superior migration of the humeral head could be provoked with experimental paralysis of the supra-and/or infraspinatus muscles. The hypothesis that static or dynamic superior humeral head displacement is prevented by active-supra-and/or infraspinatus muscle function must therefore be rejected, for the shoulder with a structurally intact muscle-tendon-bone unit.

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Section: Introductionmentioning

confidence: 99%

Effect of experimental suprascapular nerve block on active glenohumeral translations in vivo

Werner

Weishaupt

Blumenthal

et al. 2006

Journal Orthopaedic Research

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“…Winalski et al reported successful aspiration of glenoid paralabral cyst with relief of suprascapular neuropathy (Fig. 6) (19). Takahashi et al reported successful MR‐guided fenestration of a cervical intradural, extramedullary cyst in a 13‐year‐old boy (20).…”

Section: Cyst Aspirationmentioning

confidence: 99%

MRI‐guided interventions of the musculoskeletal system

Smith

Carrino

2008

Magnetic Resonance Imaging

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MRI has become the modality of choice for many diagnostic questions in musculoskeletal radiology. Naturally, with the increasing role of MRI in diagnosis of musculoskeletal conditions, clinicians have been eager to explore the possibility of using MR guidance for musculoskeletal procedures. Researchers are actively investigating the utility and practicality of MRI compared with more established modalities for procedure guidance such as computed tomography, fluoroscopy, and ultrasound. Early studies have demonstrated the safety and feasibility of MR guidance for biopsies, spine procedures, cyst aspirations, therapeutic injections, and tumor ablation. Applications in the musculoskeletal system are likely to expand as technology improves and clinicians gain more experience. Hybrid X-ray fluoroscopy/MR imaging systems hold great promise for the future of musculoskeletal intervention by combining the excellent temporal and spatial resolution of X-ray with the anatomic detail provided by MRI.

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“…We present a rare case of a synovial cyst of the shoulder that was entirely intramuscular and unassociated with other intraarticular abnormalities such as a labrum tear 11,22,23,37,39 or a rotator cuff tear. 19,31 As we have shown, symptomatic intramuscular cysts may need to be treated with open surgery, and the surgeon may need to incise the muscle or tendon to gain exposure to such cysts.…”

Section: Discussionmentioning

confidence: 99%

“…Aspiration of the cyst under computed tomography guidance has been reported, but this procedure does not predictably relieve symptoms and is associated with a higher rate of recurrence than is surgery. 8,21,26,39 Operative treatment should be considered when nonoperative intervention fails to relieve symptoms. Early surgical treatments may be considered if progressive neurologic deficits develop.…”

Section: Discussionmentioning

confidence: 99%

“…The latter are defined as fluid-filled masses contained entirely within the fascial sheath or the substance of the muscle 19,31 and are typically associated with partial-or full-thickness tears of the rotator cuff. 19,31 Synovial shoulder cysts are frequently associated with labrum tears, especially in the posterior and superior quadrants of the glenoid, 11,22,23,37,39 and they are most often found to be in contact with the bony surfaces of the scapula or distal clavicle. 1,8,26 We present a patient with a symptomatic, intramuscular (infraspinatus) synovial cyst but with no associated labrum or rotator cuff tear.…”

mentioning

confidence: 99%

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