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Does surgery for instability of the shoulder truly stabilize the glenohumeral joint?: A prospective comparative cohort study.

ABSTRACT: Despite the fact that surgery is commonly used to treat glenohumeral instability, there is no evidence that such treatment effectively corrects glenohumeral translation. The purpose of this prospective clinical study was to analyze the effect of surgical stabilization on glenohumeral translation.Glenohumeral translation was assessed in 11 patients preoperatively and 1 year postoperatively following surgical stabilization for anterior shoulder instability. Translation was measured using optical motion capture and computed tomography.Preoperatively, anterior translation of the affected shoulder was bigger in comparison to the normal contralateral side. Differences were significant for flexion and abduction movements (P?

SUBMITTER: Ladermann A

PROVIDER: S-EPMC4979797 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature

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Does surgery for instability of the shoulder truly stabilize the glenohumeral joint?: A prospective comparative cohort study.

Lädermann Alexandre A Denard Patrick J PJ Tirefort Jérôme J Kolo Frank C FC Chagué Sylvain S Cunningham Grégory G Charbonnier Caecilia C

Medicine 20160801 31

Despite the fact that surgery is commonly used to treat glenohumeral instability, there is no evidence that such treatment effectively corrects glenohumeral translation. The purpose of this prospective clinical study was to analyze the effect of surgical stabilization on glenohumeral translation.Glenohumeral translation was assessed in 11 patients preoperatively and 1 year postoperatively following surgical stabilization for anterior shoulder instability. Translation was measured using optical m ...[more]

PMID: 27495043

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Project description:PurposeTo assess independent predictors of surgery after an emergency department visit for shoulder instability, including patient-related and socioeconomic factors.MethodsPatients presenting to the emergency department were identified in the New York Statewide Planning and Research Cooperative System database from 2015 to 2018 by International Classification of Diseases, Tenth Revision, Clinical Modification diagnosis codes for anterior shoulder dislocation or subluxation. All shoulder stabilization procedures in the outpatient setting were identified using Current Procedural Terminology codes (23455, 23460, 23462, 23466, and 29806). A multivariable logistic regression was performed to assess the impact of patient factors on the likelihood of receiving surgery. The variables included in the analysis were age, sex, race, social deprivation, Charlson Comorbidity Index, recurrent dislocation, and primary insurance type.ResultsIn total, 16,721 patients with a shoulder instability diagnosis were included in the analysis and 1,028 (6.1%) went on to have surgery. Patients <18 years old (odds ratio [OR] 8.607, P < .0001), those with recurrent dislocations (OR 2.606, P < .0001), or worker's compensation relative to private insurance (OR 1.318, P = .0492) had increased odds of receiving surgery. Hispanic (OR 0.711, P = .003) and African American (OR 0.63, P < .0001) patients had decreased odds of surgery compared with White patients. Patients with Medicaid (OR 0.582, P < .0001) or self-pay (OR 0.352, P < .0001) insurance had decreased odds of undergoing surgery relative to privately insured patients. Patients with greater levels of social deprivation (OR 0.993, P < .0001) also were associated with decreased odds of surgery.ConclusionsAnterior glenohumeral instability and subsequent stabilization surgery is associated with disparities among patient race, primary insurance, and social deprivation.Clinical relevanceConsidering the relationship between differential care and health disparities, it is critical to define and increase physician awareness of these disparities to help ensure equitable care.

Project description:BACKGROUND:Pathological muscle activation patterns of the external rotators and periscapular muscles can result in posterior positional functional shoulder instability (PP-FSI). In several patients, physical therapy and surgical treatment are not successful. PURPOSE:The shoulder-pacemaker treatment concept was evaluated prospectively in patients with PP-FSI and previously failed conventional therapy attempt. STUDY DESIGN:Case series; Level of evidence, 4. METHODS:A negative selection of 24 consecutive cases of noncontrollable PP-FSI in 16 patients with previously failed conventional therapy were included in this prospective study. The shoulder-pacemaker treatment consisted of an electrical muscle stimulation-based therapy protocol with 9 to 18 one-hour treatment sessions. Two patients were excluded because of nonadherence to the training schedule, leaving a final study cohort of 21 cases in 14 patients. Follow-up included assessment of clinical function, impairment during daily activities and sports, satisfaction, Western Ontario Shoulder Instability Index (WOSI), Rowe score, and Subjective Shoulder Value at 0 weeks, 2 weeks, 4 weeks, 3 months, 6 months, 12 months, and 24 months after intervention. RESULTS:WOSI, Subjective Shoulder Value, and Rowe score showed a highly significant improvement at all time points of follow-up (P < .001). Young age (P = .005), low weight (P = .019), shoulder activity level (P = .003), unilateral affliction (P = .046), and higher baseline WOSI score (P = .04) were associated with a better treatment effect. Cases with increased glenoid retroversion, posterior scapulohumeral decentering, and dysplastic bony glenoid shape showed a trend toward shorter treatment effect duration. No complications during the intervention or follow-up period were observed. CONCLUSION:The shoulder-pacemaker therapy concept is an effective treatment with rapid improvement and sustained outcome over the course of 2 years in patients with noncontrollable PP-FSI with previously failed conventional treatment. Young and more athletic patients with lower weight and unilateral pathology respond best to the treatment.

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Does surgery for instability of the shoulder truly stabilize the glenohumeral joint?: A prospective comparative cohort study.

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Does surgery for instability of the shoulder truly stabilize the glenohumeral joint?: A prospective comparative cohort study.

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