ASSESSMENT OF THE LEVEL OF SATISFACTION OF PATIENTS SUBMITTED TO LATARJET SURGERY UNDER OUTFIT SYSTEM COMPARED TO HOSPITAL SYSTEM.

Anterior shoulder instability causes functional changes that affect patients' quality of life. The Latarjet procedure is one of the most frequently performed surgeries for cases of recurrent shoulder instability. Objective: To assess the level of satisfaction of patients who underwent the Latarjet procedure in outpatient settings (day hospital) compared with inpatient settings. Methods: A questionnaire was administered to both groups and a descriptive analysis of the results was performed. Results: 51 patients were included, with a mean age of 29.9 years, 82.3% men and 17.6% women. Of the patients who underwent surgery in the day hospital, 46.1% were operated within 100 days of their first outpatient visit; among those in the inpatient group, 76.3% underwent surgery more than 200 days later. Delays occurred in 15.3% of cases in the day hospital compared with 68.4% in the inpatient group. Of the patients in the day hospital, 92.3% felt comfortable contacting the medical team in case of complications and would perform the procedure again in the same setting. Moreover, 63.2% of inpatients would have preferred to have been discharged on the same day. The final satisfaction rate for both groups was 100%. Conclusion: Outpatient surgery guarantees more patient comfort, safety, and can be performed in a timely manner and with fewer delays, which has influenced patients' decision to have surgery during the COVID-19 pandemic. Level of Evidence V, Cross-sectional Study.

A instabilidade anterior do ombro acarreta alterações funcionais que impactam a qualidade de vida do paciente. A cirurgia de Latarjet é um dos procedimentos mais executados para casos de instabilidade recorrente de ombro. Objetivo: Comparar o grau de satisfação dos pacientes submetidos ao procedimento de Latarjet no regime ambulatorial (hospital dia) com o dos operados no regime hospitalar. Métodos: Um questionário foi aplicado em ambos os grupos e uma análise descritiva dos resultados foi realizada. Resultados: Foram incluídos 51 pacientes, com idade média de 29,9 anos, sendo 82,3% homens e 17,6% mulheres. Dos submetidos à cirurgia no hospital dia, 46,1% operaram em até 100 dias depois do primeiro atendimento ambulatorial; já entre os do grupo hospitalar, 76,3% operaram mais de 200 dias depois. O atraso na cirurgia ocorreu com 15,3% dos pacientes do hospital dia contra 68,4% do grupo hospitalar. Do hospital dia, 92,3% pacientes sentiram-se confortáveis em contatar a equipe médica em caso de intercorrências e fariam novamente o procedimento de forma ambulatorial. Além disso, 63,2% dos internados gostariam de ter recebido alta no mesmo dia. O grau de satisfação final em ambos os grupos foi de 100%. Conclusão: A cirurgia ambulatorial garante mais conforto para o paciente, mostrando-se segura e podendo ser performada em tempo hábil e com menos atrasos, o que influenciou a decisão dos pacientes em operar durante a pandemia de COVID-19. Nível de Evidência V, Estudo Transversal.

Reference values and influencing factors of the glenohumeral subluxation index: a study on 3004 participants.

BACKGROUND: The primary objective of this study was to examine the glenohumeral subluxation index (GHSI) in a large general population cohort and to define reference values. Glenohumeral subluxation is important in the development and prediction of pathological states of the shoulder joint and in total shoulder arthroplasty. Therefore, another objective was to examine the influence of age, sex, body mass index, and body height and weight on GHSI. METHODS: GHSI according to Walch was measured on bilateral magnetic resonance imaging of 3004 participants of the Study of Health in Pomerania (SHIP, aged 21-90 years). SHIP drew a sample of the adult general population of Pomerania (Northeastern Germany). Reference values for GHSI were assessed by quantile regression models. Associations of sex, age, and anthropometric markers with the GHSI were calculated by linear regression models. RESULTS: A reference range between 42% and 55% for men with a mean of 49% ± 4% was defined, while the upper reference limit for women was 1% higher (mean, 50% ± 4%). Age was inversely associated with the GHSI in males (P < 0.001), while no significant association in females was observed (P = .625). Body weight and body mass index were positively associated (P < .001) without effect modification by sex. Heavy mechanical oscillations on the upper extremity showed no significant association with GHSI (P = .268). CONCLUSION: The reference values for GHSI were expanded to a range of 42%-57% on magnetic resonance imaging. Several associations between GHSI and anthropometric properties are present. According to these associations, adjusted formulas are provided to enable individual, patient-specific diagnostics and therapy. Nevertheless, the clinical picture cannot be neglected.

Quantitative statistical shape model-based analysis of humeral head migration, Part 2: Shoulder osteoarthritis.

We wanted to investigate the quantitative characteristics of humeral head migration (HHM) in shoulder osteoarthritis (OA) and their possible associations with scapular morphology. We quantified CT-scan-based-HHM in 122 patients with a combination of automated 3D scapulohumeral migration (=HHM with respect to the scapula) and glenohumeral migration (=HHM with respect to the glenoid) measurements. We divided OA patients in Group 1 (without HHM), Group 2a (anterior HHM) and Group 2b (posterior HHM). We reconstructed and measured the prearthropathy scapular anatomy with a statistical shape model technique. HHM primarily occurs in the axial plane in shoulder OA. We found "not-perfect" correlation between subluxation distance AP and scapulohumeral migration values (rs = 0.8, p < 0.001). Group 2b patients had a more expressed prearthropathy glenoid retroversion (13° vs. 7°, p < 0.001) and posterior glenoid translation (4 mm vs. 6 mm, p = 0.003) in comparison to Group 1. Binary logistic regression analysis indicated prearthropathy glenoid version as a significant predictor of HHM (χ² = 27, p < 0.001). Multivariate regression analysis showed that the pathologic version could explain 56% of subluxation distance-AP variance and 75% of the scapulohumeral migration variance (all p < 0.001). Herewith, every degree increase in pathologic glenoid retroversion was associated with an increase of 1% subluxation distance-AP, and scapulohumeral migration. The occurrence of posterior HHM is associated with prearthropathy glenoid retroversion and more posterior glenoid translation. The reported regression values of HHM in the function of the pathologic glenoid version could form a basis toward a more patient-specific correction of HHM.

Assessment of the level of satisfaction of patients submitted to latarjet surgery under outfit system compared to hospital system / Avaliação do grau de satisfação do paciente submetido à cirurgia de latarjet em regime ambulatorial em comparação com o regime hospitalar

ABSTRACT Anterior shoulder instability causes functional changes that affect patients' quality of life. The Latarjet procedure is one of the most frequently performed surgeries for cases of recurrent shoulder instability. Objective: To assess the level of satisfaction of patients who underwent the Latarjet procedure in outpatient settings (day hospital) compared with inpatient settings. Methods: A questionnaire was administered to both groups and a descriptive analysis of the results was performed. Results: 51 patients were included, with a mean age of 29.9 years, 82.3% men and 17.6% women. Of the patients who underwent surgery in the day hospital, 46.1% were operated within 100 days of their first outpatient visit; among those in the inpatient group, 76.3% underwent surgery more than 200 days later. Delays occurred in 15.3% of cases in the day hospital compared with 68.4% in the inpatient group. Of the patients in the day hospital, 92.3% felt comfortable contacting the medical team in case of complications and would perform the procedure again in the same setting. Moreover, 63.2% of inpatients would have preferred to have been discharged on the same day. The final satisfaction rate for both groups was 100%. Conclusion: Outpatient surgery guarantees more patient comfort, safety, and can be performed in a timely manner and with fewer delays, which has influenced patients' decision to have surgery during the COVID-19 pandemic. Level of Evidence V, Cross-sectional Study.

RESUMO A instabilidade anterior do ombro acarreta alterações funcionais que impactam a qualidade de vida do paciente. A cirurgia de Latarjet é um dos procedimentos mais executados para casos de instabilidade recorrente de ombro. Objetivo: Comparar o grau de satisfação dos pacientes submetidos ao procedimento de Latarjet no regime ambulatorial (hospital dia) com o dos operados no regime hospitalar. Métodos: Um questionário foi aplicado em ambos os grupos e uma análise descritiva dos resultados foi realizada. Resultados: Foram incluídos 51 pacientes, com idade média de 29,9 anos, sendo 82,3% homens e 17,6% mulheres. Dos submetidos à cirurgia no hospital dia, 46,1% operaram em até 100 dias depois do primeiro atendimento ambulatorial; já entre os do grupo hospitalar, 76,3% operaram mais de 200 dias depois. O atraso na cirurgia ocorreu com 15,3% dos pacientes do hospital dia contra 68,4% do grupo hospitalar. Do hospital dia, 92,3% pacientes sentiram-se confortáveis em contatar a equipe médica em caso de intercorrências e fariam novamente o procedimento de forma ambulatorial. Além disso, 63,2% dos internados gostariam de ter recebido alta no mesmo dia. O grau de satisfação final em ambos os grupos foi de 100%. Conclusão: A cirurgia ambulatorial garante mais conforto para o paciente, mostrando-se segura e podendo ser performada em tempo hábil e com menos atrasos, o que influenciou a decisão dos pacientes em operar durante a pandemia de COVID-19. Nível de Evidência V, Estudo Transversal.

Magnetic resonance imaging findings in painful hemiplegic shoulder patients with or without subluxation: A retrospective cohort study.

The relationship between hemiplegic shoulder pain (HSP) and subluxation is unclear. This study aimed to determine the differences of magnetic resonance imaging (MRI) findings in HSP patients with or without subluxation after stroke, and to analyze the etiology of shoulder pain. This retrospective study included 53 patients with HSP after stroke from September 2013 to February 2020. Patients underwent MRI of the shoulder because of shoulder pain. Clinical characteristics, including age, sex, stroke duration, body mass index, stroke type, visual analog scale score, Brunnstrom stage, and MRI arthrography findings of the affected shoulder, were recorded. Patients were classified into the glenohumeral subluxation (GHS) group (n = 27) or non-glenohumeral subluxation (nGHS) group (n = 26). We found that patients with HSP may be prone to bursa effusion, rotator cuff injury, ligament injury, and cartilage injury, even though there was no significant difference between the GHS and nGHS groups. MRI revealed 14 cases of long bicipital tendon-glenoid labrum injury (51.8%) in the GHS group and 6 cases (23.1%) in the nGHS group (p = 0.030). We also found 10 cases (37%) of glenoid labrum injury in the GHS group and 2 cases (7.7%) in the nGHS group (p = 0.026). Eight cases (29.6%) and 1 case (3.8%) of bone marrow edema were found in the GHS and nGHS groups, respectively (p = 0.033). Compared with painful hemiplegic shoulder patients without subluxation, patients with subluxation may be more susceptible to some injuries, such as long bicipital tendon-glenoid labrum injury, glenoid labrum injury, and bone marrow edema. During rehabilitation, physicians need to pay attention to these injuries.

Inestabilidad de hombro en adolescentes: Indicaciones para cirugía. Reporte de caso y estado del arte / Shoulder instability in adolescents: Indications for surgery. Case report

La inestabilidad de hombro es una condición frecuente en personas involucradas en actividades deportivas de alta demanda física. Debido a sus particularidades anatómicas, los adolescentes presentan mayor riesgo de recidiva luego de un primer episodio de luxación de hombro. El sexo masculino, edad y participación en actividades deportivas de alto impacto son los principales factores de riesgo para recurrencia. En esta publicación, reportamos el caso de una adolescente porrista con inestabilidad anterior de hombro con evolución favorable luego de estabilización abierta complementado por una revisión del estado del arte de las aproximaciones terapéuticas de la inestabilidad recurrente de hombro en adolescentes.

Shoulder instability is a frequent condition in people involved in sport activities of high-physical demand. Due to their anatomical features, adolescents are at greater risk of recurrence after a first episode of shoulder dislocation. Male gender, age and participation in high-impact sport activities are the main risk factors for recurrence. We report the case of a cheerleader teenager with anterior shoulder instability with favorable evolution after open stabilization complemented by a review of the state of the art of the therapeutic approaches of recurrent shoulder instability in adolescents.

Reliability of ultrasonographic measurement of the supraspinatus thickness at different angles of shoulder abduction in patients with stroke.

[Purpose] The primary purpose of this study was to evaluate the usefulness of the intraclass correlation coefficient for evaluating the reliability of the measurement of the supraspinatus thickness on shoulder ultrasonography at different angles in a resting position in patients with stroke. [Participants and Methods] The study included 20 patients with stroke. The supraspinatus thickness was measured on both sides on ultrasonography, with the participants' shoulders in abduction at 3 testing angles (0°, 30°, and 60° abduction). Each measurement was performed three times, and the average of the three measurements was recorded. The intraclass correlation coefficient was calculated, with the supraspinatus thickness measured twice at an interval of 24 hours as the factor. [Results] All intraclass correlation coefficients for the hemiplegic and normal sides were greater than 0.93 when the shoulders were at the three testing angles. [Conclusion] In this investigation, the reliability of measuring the supraspinatus thickness on shoulder ultrasonography at each angle for 3 times was evaluated and was found to be excellent.

Profile of upper limb recovery and development of secondary impairments in patients after stroke with a disabled upper limb: An observational study.

Purpose: To investigate, in patients after stroke with a very weak upper limb, the profile of recovery for upper limb activity over the first 12 weeks, and whether early secondary impairments predict later upper limb activity. Method: Forty patients within 2 weeks of stroke with a very weak upper limb (<4/6 Item 6 of Motor Assessment Scale) were observed longitudinally. Upper limb activity (Items 6, 7, and 8 of Motor Assessment Scale), shoulder subluxation (vertical distance), shoulder pain (visual analogue scale), and upper limb range of motion were measured at 2, 6, and 12 weeks poststroke. Results: By Week 12, upper limb activity was 1.0/18 (IQR 3.0). Shoulder subluxation was 42 mm (SD 8), 7 mm > the intact side at 2 weeks. Pain at rest was 0.1/10 (IQR 1.1), and pain during movement was 2.6/10 (IQR 4.5). Passive shoulder external rotation was 23° (SD 34), 30% of the intact side at 2 weeks. Shoulder pain during movement at 2 weeks predicted shoulder pain during movement at 6 and 12 weeks after stroke (p = 0.05). Conclusion: Most patients with a disabled upper limb after stroke have little recovery of activity in the first 12 weeks. Shoulder pain on movement at 2 weeks should be flagged as a predictor of future pain.

Morfología glenoidea en la artrosis glenohumeral primaria: factores preoperatorios relevantes / Glenoid morphology in primary glenohumeral osteoarthritis; preoperatory relevant elements

El objetivo primario de esta revisión es realizar una actualización de los conceptos básicos relacionados a los cambios morfológicos glenoideos durante la artrosis glenohumeral primaria, métodos de medición relevantes y describir las modificaciones en la nueva clasificación de Gilles Walch. La medición de esos parámetros influyen en forma directa tanto en el acto quirúrgico dentro una prótesis de hombro como en los resultados clínicos post operatorios. Los diferentes métodos de medición descritos en la literatura han permitido evaluar la magnitud de esos fenómenos morfológicos y describir la "glenoides bicóncava", caracterizada por presentar 3 subtipos: la paleoglena, neoglena y la glena intermedia. A partir de esos conceptos, Walch en 1999 describe la clasificación de los cambios morfológicos glenoideos en artrosis primaria, la cual ha presentado una reciente modificación debido a la mala concordancia intra e interobservador de esa medición obtenida por varios investigadores, además de reconocer una carencia en la precisión para describir cada subtipo. A la fecha, diferentes autores investigan la influencia de esos factores morfológicos preoperatorios en los resultados post operatorios, y hasta que valor límite podrían guiar un tratamiento especifico. Conclusión: Enfatizamos que un análisis acabado y minucioso de la morfología glenoidea es importante para una adecuada planificación quirúrgica en artroplastia de hombro, ya que eso puede guiarnos en cuál técnica o implante puede ser el más adecuado para cada tipo de glenoides.

The main purpose of this review is to up date the basic concepts regarding the glenoid morphological changes in primary glenohumeral osteoarthritis, relevant measuring methods, and a description of the modifications in the Gilles Walch classification. The measurement of these parameters influences both surgical indications for total shoulder arthroplasty and the post op clinical outcomes. The different measuring methods described in literature have allowed to evaluate the magnitude of these morphological phenomena describing the "biconcave glenoid", which characteristically presents 3 subtypes: paleoglenoid, neoglenoid and intermediate glenoid. Based on these concepts, Walch classified the glenoid morphological changes in primary ostheoarthritis in 1999, which has been recently modified due to the poor inter-observer and intra-observer reliability described by a vast number of researchers, and also because of an observed lack of precision when describing each sub-type. Up to date, different authors are debating the influence of these pre operative morphological factors on the post op outcomes; and the cut-off value up to which this could lead to a specific treatment. As a conclusion, we emphasize that a deep and thorough analysis of the glenoid morphology is important for an adequate surgical planning of a shoulder arthroplasty, as this can guide us to the most adequate technique and type of implant for each type of glenoid.

Arthroscopic soft tissue reconstruction in anterior shoulder instability.

Anterior glenohumeral instability remains a difficult problem in the athletic and working patient populations. Treatment strategies are variable and range from nonoperative approaches incorporating immobilization and rehabilitation to surgical management. Surgical decision-making can be challenging, especially with a high-level patient who wishes to return to high-demand activities. Operative options range from open soft tissue stabilization to arthroscopic soft tissue stabilization, with both open and arthroscopic options for bony reconstruction in the setting of clinically significant anterior glenoid bone loss. In all cases, understanding appropriate indications and utilizing sound surgical techniques are critical for achieving a successful result. For the majority of patients with anterior shoulder instability, arthroscopic soft tissue reconstruction with suture anchors is a successful, minimally invasive approach that results in a stable shoulder with excellent outcomes and low complication rates.

Current Concepts in the Diagnosis and Management of Traumatic, Anterior Glenohumeral Subluxations.

Traumatic anterior glenohumeral subluxations comprise the majority of glenohumeral instability events and are endemic in young athletes. Unlike the definitive complete dislocation event, subluxation events may often be more subtle in presentation and, therefore, may be overlooked by clinicians. Glenohumeral subluxation events are associated with a high rate of labral tears as well as humeral head defects. While less is known of the natural history of these injuries, young athletes are at risk for recurrent instability events if not properly diagnosed and treated. While reports of surgical treatment outcomes isolated to subluxation events are limited, arthroscopic and open Bankart repair have been shown to result in excellent outcomes. The purpose of this paper is to review the etiology and pathoanatomy of traumatic anterior glenohumeral subluxations as well as to review the appropriate evaluation and management of patients with this injury.

Posterior open wedge osteotomy of the scapula neck for the treatment of advanced shoulder osteoarthritis with posterior head migration in young patients.

BACKGROUND: Treatment of young, active patients with symptomatic glenohumeral osteoarthritis, excessive glenoid retroversion, and static posterior humeral subluxation is challenging. Correction of glenoid retroversion may lead to centric loading and perhaps recenter the humeral head. We describe the functional and radiologic outcomes after corrective osteotomy of the glenoid in this population of patients. MATERIALS AND METHODS: In this retrospective study, we included 10 shoulders (8 patients) that were observed for a mean of 33.4 months (range, 24-52 months) after corrective osteotomy of the glenoid. The mean age at surgery was 41.5 years (range, 24-51 years). On standardized axial images, glenoid retroversion and posterior static humeral subluxation were measured preoperatively and postoperatively and at the final follow-up. At final follow-up, anterior and posterior axial radiographs were performed to determine humeral head position in different arm positions. Clinical follow-up included Constant-Murley score, subjective shoulder value, and patient satisfaction. RESULTS: The mean Constant-Murley score improved significantly from 45.1 points (range, 24-71) to 64.1 points (range, 44-92; P < .001). The average degree of anterior flexion improved significantly from 117° (range, 50°-160°) to 143° (range, 110°-180°; P = .006). The mean glenoid retroversion changed from 16° (range, 11°-31°) preoperatively to 5° (range, 13° anteversion-16° retroversion; P = .003) at the final follow-up. The mean posterior static subluxation of the humeral head changed from 5 mm (range, 0-10 mm) preoperatively to 6 mm (range, 0-14 mm; P = .259) at the final follow-up. CONCLUSIONS: This study shows that posterior open wedge osteotomy of the glenoid neck provides excellent correction of glenoid retroversion.

The three-dimensional glenohumeral subluxation index in primary osteoarthritis of the shoulder.

BACKGROUND: Assessment of glenohumeral subluxation is essential in preoperative planning of total shoulder arthroplasty. The purpose of this study was to evaluate a 3-dimensional (3D) glenohumeral subluxation index (GHSI) in shoulders with primary osteoarthritis (OA) and its relationship with morbid glenoid retroversion. METHODS: The 3D computed tomography reconstructions of 120 healthy shoulders and 110 shoulders with primary glenohumeral arthritis (OA group), classified according to Walch's glenoid morphology, were analyzed. The 3D GHSI was assessed by measuring posterior decentering of the humeral head in relation to the native glenoid in each subject, and its correlation to morbid glenoid version was calculated. RESULTS: The reproducible 3D GHSI (intraclass correlation coefficients ≥ 0.842) showed a posterior decentering of the humeral head in the OA population and in each type of glenoid morphology (P ≤ .005). A moderate correlation was observed in the OA group (r = -0.542; P < .001), but weak linear relationships were found for different glenoid morphology types (r between 0.041 and -0.307). Type A shoulders (r = -0.375; P = .006) correlated better than type B shoulders (r = -0.217; P = .104). After shoulders were subcategorized according to a threshold for 3D subluxation, the posteriorly subluxated group increased its correlation (r = -0.438; P < .001), whereas the centered shoulders still exhibited no relationship (r = -0.192; P = .329). CONCLUSIONS: Posterior humeral head decentering in relation to the native glenoid is present in each glenoid morphology type. Grouping measures according to morphology type and 3D subluxation showed at best moderate correlations between morbid version and 3D GHSI.

Ultrasonographic assessment of neuromuscular electrical stimulation efficacy on glenohumeral subluxation in patients with hemiplegia: a randomized-controlled study.

OBJECTIVES: This study aims to investigate the short-term effects of neuromuscular electrical stimulation (NMES) on glenohumeral subluxation (GHS) in stroke patients. PATIENTS AND METHODS: This prospective, randomized-controlled study included 24 unilateral hemiplegic patients (10 males, 14 females; mean age 64.1±14.8 years; range 22 to 84 years) with GHS as assessed by ultrasonography between December 2013 and September 2014. The patients were randomly divided into two groups as those in the NMES group (n=12) who were treated with NMES to supraspinatus, upper trapezius, and posterior deltoid muscles combined with conventional physiotherapy and as those in the control group (n=12) who were received conventional physiotherapy alone. Clinical (the Brunnstrom Motor Recovery Stage, Visual Analog Scale [VAS] for Pain and Shoulder Disability Questionnaire [SDQ]) and ultrasonographic (acromion-greater tuberosity distance, thicknesses of supraspinatus, upper trapezius, and posterior deltoid muscles) variables were evaluated before and after treatment in both groups. RESULTS: The SDQ index, acromion-greater tuberosity distance, and supraspinatus muscle thickness were improved in the NMES group, compared to the control group (for all p<0.05). The VAS-pain scores decreased in both groups. There was no statistically significant alterations in the other measurements in both groups (for all p>0.05). The percentage change (%) of the VAS-pain scores was not significantly different between two groups (p=0.03). CONCLUSION: Our study results showed that GHS decreased after 20 sessions of NMES treatment. Based on these findings, ultrasonography appears to be a proper imaging tool for the evaluation of GHS in stroke patients.

A three-dimensional comparative study on the scapulohumeral relationship in normal and osteoarthritic shoulders.

BACKGROUND: Eccentric loading due to humeral translation is associated with worse clinical outcomes in hemiarthroplasty and total shoulder arthroplasty. The purpose of this study was to evaluate the 3-dimensional relationship of the humeral head to the scapula (scapulohumeral relationship) in nonpathologic shoulders and in shoulders with primary osteoarthritis. MATERIALS AND METHODS: Three-dimensional reconstructions of computed tomography scans of 151 nonpathologic shoulders (control group) and 110 shoulders with primary glenohumeral arthritis (OA group) were analyzed by measuring the anterior-posterior, inferior-superior, and medial-lateral position of the humeral head in relation to the scapula. Shoulders were classified as centered (type A) or posteriorly subluxed (type B) according to the Walch classification of glenoid morphology. Reproducibility and differences in scapulohumeral relationship were statistically analyzed. RESULTS: The scapulohumeral relationship could be determined reliably: the intraclass correlation coefficient ranged between 0.780 and 0.978; the typical error of measurement ranged between 2.4% and 5.0%. Both type A and type B shoulders showed significant posterior translation of the humeral head (P <.001). Type B shoulders had significantly more posterior translation than type A shoulders (P <.001). A tendency of inferior translation was noted, although with only marginal statistical significance (P = .051). In each morphology class, a medial deviation of the humeral head, representing a reduced glenohumeral distance, was measured (P <.001). CONCLUSIONS: The main characteristics of primary glenohumeral osteoarthritis are posterior humeral head translation relative to the scapula, reduced glenohumeral distance, and a tendency toward inferior humeral head translation in both type A and type B shoulders.

Intra-rater and inter-rater reliability of ultrasonographic measurements of acromion-greater tuberosity distance in patients with post-stroke hemiplegia.

BACKGROUND: Glenohumeral subluxation (GHS) is reported in up to 81% of patients with stroke. Ultrasonographic measurements of GHS by measuring the acromion-greater tuberosity (AGT) have been found to be reliable for experienced raters. OBJECTIVES: The primary aim was to assess the intra-rater reliability of measurements of AGT distance in people with stroke following a short course of rater training. A secondary aim was to compare the inter-rater reliability of these measurements between novice and experienced raters. METHODS: Patients with stroke (n = 16; 5 men, 11 women; 74 ± 10 years) with 1-sided weakness who gave informed consent were recruited. Ultrasonographic measurements were recorded at the bedside by two physiotherapists with patients seated upright in a hospital chair. Reliability was assessed by intra-class correlation coefficients (ICCs) and the standard error of measurements (SEM). Minimum detectable change (MDC90) scores were used to estimate the magnitude of change that is likely to exceed measurement error. RESULTS: Mean ± SD AGT distances on the affected and unaffected sides for rater 1 were 2.2 ± 0.7 and 1.7 ± 0.4 cm, respectively. Corresponding values for rater 2 were 2.5 ± 0.6 and 2.0 ± 0.4 cm. Intra-class correlation coefficient values for the affected and unaffected shoulders for rater 1 were 0.96 and 0.91, respectively. Corresponding values for rater 2 were 0.95 and 0.90.SEM and MDC90 for both affected and unaffected shoulders were ≤ 0.2 cm. Inter-rater reliability coefficients were 0.86 (affected) and 0.76 (unaffected) shoulders. CONCLUSION: Ultrasonographic measurement of AGT distance demonstrates excellent intra-rater reliability for a novice rater. Inter-rater reliability of ultrasonographic measurement of AGT also demonstrates good reliability between novice and experienced raters.

Glenoid version and inclination are risk factors for anterior shoulder dislocation.

HYPOTHESIS: Although the contribution of the capsuloligamentous structures and dynamic muscle balance to shoulder stability has been well documented, the role of the osseous anatomy of the glenoid has not been thoroughly evaluated. This study investigated glenoid version and inclination in patients with a documented anterior shoulder dislocation and compared it with a control group. We hypothesized that patients with a prior anterior dislocation would have more anterior version and increased inferior inclination of the glenoid. MATERIALS AND METHODS: Patients aged younger than 40 years who underwent arthroscopic shoulder stabilization (study group) were compared with patients (control group) who had previously undergone magnetic resonance imaging (MRI) for a different shoulder condition. Version was measured on axial images, and inclination was measured on coronal images of a T2-weighted spin-echo scan. The MRIs of 128 study group patients (mean age, 24.5 ± 8.6 years) with a confirmed traumatic anterior shoulder dislocation were compared with the MRIs of 130 control group patients (mean age, 30.9 ± 7 years). RESULTS: The mean version in the study group was -1.7° ± 4.5° (retroversion); the mean inclination was 1.6° ± 5.9° (inferior). The mean version in the control group was -5.8° ± 4.6° (retroversion); the mean inclination was -4.0° ± 6.8° (superior). The between-group differences were significant for version (P = .00001) and inclination (P = .00001). CONCLUSIONS: The results of this study strongly suggest that glenoid version and inclination are significantly increased in patients with established anterior shoulder instability compared with a matched control group.

Management of shoulder pain after a cerebrovascular accident or traumatic brain injury.

BACKGROUND: Shoulder pain after a cerebrovascular accident or traumatic brain injury is a common but often under-recognized problem. It is due to a number of causes including inferior subluxation, spasticity, adhesive capsulitis, and heterotopic ossification. Many of these are amenable to surgical intervention. METHODS: Literature review of current evidence. RESULTS: This article shows that there are multiple treatment options in this group of patients, and it is important to understand these as clinicians in delivering quality care to this complex group of patients. CONCLUSION: This review article describes how careful clinical assessment can differentiate between causes of shoulder pain and guide best management.

Accuracy of the glenohumeral subluxation index in nonpathologic shoulders.

BACKGROUND: Correction of posterior humeral subluxation, measured by the humeral subluxation index (HSI) according to Walch, is necessary in total shoulder arthroplasty to prevent early loosening. The 3-dimensional (3D) measurement of the shoulder is becoming well accepted and common practice as it overcomes positional errors to which 2-dimensional (2D) glenohumeral measurements are prone. The first objective was to describe the HSI in a nonpathologic population with the 2D HSI according to Walch and a newly described 3D HSI method. The second objective was to compare both measuring methods with each other. METHODS: In 151 nonpathologic shoulders, the 2D HSI was measured on the midaxial computed tomography scan cut of the scapula. The 3D HSI, based on the native glenoid plane, was defined as [formula in text], in which X is the projection of the center of the humeral head to the anteroposterior axis of the glenoid fossa and R is the radius of the humeral head. Both measuring methods were compared with each other. Correlation was determined. Interobserver and intraobserver reliability of the 3D HSI was measured. RESULTS: The mean 3D HSI (51.5% ± 2.7%) was significantly (P < .001) more posterior than the mean 2D HSI (48.7% ± 5.2%), with a mean difference of 2.9% ± 5.6%. No correlation was found between the 2D and 3D HSI. The interobserver and intraobserver reliability was excellent. CONCLUSION: The 2D HSI seems to underestimate the humeral subluxation compared with a 3D reliable equivalent.