Lifestyle factors and subacromial impingement syndrome of the shoulder: potential associations in finnish participants.

BACKGROUND: Emerging evidence has indicated the associations between subacromial impingement syndrome (SIS) of shoulder and lifestyle factors. However, whether unhealthy lifestyle factors causally increase SIS risk is not determined. This study aims to evaluate whether lifestyle factors are the risk factors of SIS. METHODS: A two-sample Mendelian randomization (MR) study was designed to evaluate the effect of 11 lifestyle factors on SIS risk. Causality was determined using the inverse-variance weighted method to calculate the odds ratio (OR) and establish a 95% confidence interval (CI). Weighted median method, MR-Egger method and MR-PRESSO method were conducted as sensitivity analysis. RESULTS: Four lifestyle factors were identified causally associated with an increased risk of SIS using the IVW method: insomnia (OR: 1.66 95% CI 1.38, 2.00; P = 8.86 × 10- 8), short sleep duration (OR: 1.53 95% CI 1.14, 2.05: P = 0.0043), mobile phone usage (OR: 4.65, 95% CI 1.59, 13.64; P = 0.0051), and heavy manual or physical work (OR: 4.24, 95% CI 2.17, 8.26; P = 2.20 × 10- 5). Another causal but weak association was found between smoking initiation on SIS (OR: 1.17, 95% CI 1.01, 1.35; P = 3.50 × 10- 2). Alcohol, coffee consumption, physical activity, sedentary behavior, sleep duration and computer usage were not found to be causally associated with an increased risk of SIS. Sensitivity analyses indicated that the MR estimates were robust and no heterogeneity and pleiotropy were identified in these MR analyses. CONCLUSION: Sleep habits and shoulder usage were identified as causal factors for SIS. This evidence supports the development of strategies aimed at improving sleep behaviors and optimizing shoulder usage patterns as effective measures to prevent SIS.

Surgery for subacromial impingement syndrome and occupational biomechanical risk factors in a 16-year prospective study among male construction workers.

OBJECTIVE: The aim of this study was to assess the association between occupational biomechanical exposures and the occurrence of surgical treatment for subacromial impingement syndrome (SIS). METHODS: A cohort of 220 295 male constructions workers who participated in a national occupational health surveillance program (1971-1993) were examined prospectively over a 16-year follow-up period (2001-2016) for surgically treated SIS. Worker job title, smoking status, height, weight, and age were registered on health examination. Job titles were mapped to 21 occupational groups based on tasks and training. A job exposure matrix (JEM) was developed with exposure estimates for each occupational group. Surgical cases were determined through linkage with the Swedish national in- and outpatient registers. Poisson regression was used to assess the relative risks (RR) for each biomechanical exposure. RESULTS: The total incidence rate of surgically treated SIS over the 16-year observation period was 201.1 cases per 100 000 person-years. Increased risk was evident for workers exposed to upper-extremity loading (push/pull/lift) (RR 1.45-2.30), high hand grip force (RR 1.47-2.23), using handheld tools (RR 1.52-2.09), frequent work with hands above shoulders (RR 1.62-2.11), static work (RR 1.77-2.26), and hand-arm vibration (RR 1.78-2.13). There was an increased risk for SIS surgery for all occupational groups (construction trades) compared with white-collar workers (RR 1.56-2.61). CONCLUSIONS: Occupational upper-extremity load and posture exposures were associated with increased risk for surgical treatment of SIS, which underlines the need for reducing workplace exposures and early symptom detection in highly exposed occupational groups.

Shoulder impingement: various risk factors for supraspinatus tendon tear: A case group study.

ABSTRACT: A total of 680 cases of monolateral shoulder pain and functional impairment were included, and Chi-Squared tests was incorporated to test for possible associations.No relation between impingement syndrome and potential risk factors was found, such as presence of down slopping (P = .083), presence of ossification acromiale (P  = .102), presence of calcific tendinitis (P  = .144), types of acromion (I [P = .600], II [P = .536], III [P = .633] and IV [P = .832]) and grade of acromioclavicular degenerative changes (mild [P = .077], moderate [P = .111], and severe [P = .700]). However, a significant relationship was uncovered between impingement syndrome and risk factors such as gender (X2 = 7.004, df = 1, P = .08) (where females were more prone), history of shoulder dislocation (X2 = 19.440, df = 1, P = .001), presence of supraspinatus tendon tear or tendinopathy (X2 = 69.344, df = 1, P = .001) and supraspinatus complete tear (X2 = 13.593, df = 1, P = .001). A significant relationship was found between the type of supraspinatus pathology and factors such as gender (female more prone) (X2 = 34.719, df = 3, P = .01), presence of down slopping (X2 = 57.765, df = 3, P = .01), history of shoulder dislocation (X2 = 148.880, df = 3, P = .001), type III of the acromion (X2 = 12.979, df = 3, P = .005), presence of acromioclavicular generative changes mild (X2 = 76.408, df = 3, P = .001) and moderate (X2 = 29.697, df = 3, P = .001), and acromiohumeral distance of ≤3 mm (X2 = 18.915, df = 3, P = .001), 3.1 to 6 mm (X2 = 13.212, df = 3, P = .004), and 9.1-12 mm (X2 = 15.066, df = 3, P = .002). Overall, the Magnetic Resonance Imaging results yielded high sensitivity for detecting full-thickness supraspinatus tears.Considering the findings, this study may help radiologists understand the salient risk factors and identify which factors are mainly responsible for supraspinatus tendon tears and the respective grade of tear (articular partial, bursal partial, complete, or tendinopathy).

High incidence of lost workdays in patients with subacromial impingement syndrome.

INTRODUCTION: Loss of workdays is the main societal cost related to shoulder disorders with nine lost workdays per six months on average. The most common shoulder disorder is subacromial impingement syndrome (SIS), but it remains unknown if SIS is also a leading cause of shoulder-related loss of worktime. We aimed to investigate the incidence of workdays lost due to SIS during the six months following a SIS diagnosis in specialised care. METHODS: Among 157 consecutive patients diagnosed with SIS in secondary care, 129 (82%) completed a structured six-month follow-up interview. Job status, average working hours and sick leave due to SIS were recorded. Only patients holding a job (n = 58) and patients who lost their job due to SIS (n = 8) were considered to be at risk of losing workdays, leaving 66 patients in the at-risk group. The number of lost workhours due to SIS was calculated and normalised to full-time workdays, and incidences of lost workdays were estimated using Poisson regressions. RESULTS: In total, 1,781 workdays were lost. The mean number of lost workdays per six months was 27 days (95% confidence interval (CI): 18-40) for patients at risk (n = 66), corresponding to 14 days on average (95% CI: 9-21 days) for the entire cohort (n = 129). A total of 33 patients were responsible for all loss of workdays. CONCLUSIONS: We found that an average of 27 workdays (> 5 work weeks) were lost due to SIS during the first six months after the diagnosis in patients who were otherwise fit to work. This is three times higher than the nine days previously reported for shoulder problems in general, indicating that productivity loss in patients diagnosed with SIS is a major concern. FUNDING: none. TRIAL REGISTRATION: not relevant.

Influential factors of subacromial impingement syndrome after hook plate fixation for acromioclavicular joint dislocation: A retrospective study.

ABSTRACT: Subacromial impingement syndrome (SIS) after hook plate fixation for acromioclavicular joint (AC) dislocation was the most common complication. However, the researches on its' influential factors were rare. The purpose of this study was to identify the risk factors by analyzing the influencing factors of postoperative SIS and minimize the incidence of SIS in clinical surgery.We retrospectively analyzed the prospectively collected data from 330 consecutive patients with AC joint dislocation between August 2014 and August 2017 at our institute. The SIS was presented as the dependent variable at the last follow-up when the internal fixation was removed. The independent variables included age, gender, body-mass index (BMI), smoking status, alcohol consumption, type of injury, Rockwood Classification, site of injury, operation time, injury-to-surgery, the distance between the hook body and the acromion (DBA), the depth of hook tip (DHT), the distance between the hook plate and the humeral head (DHH), the distance between the acromion and the humeral head (DAH), the hook plate angle (AHP) and acromial shape. Logistic regression analysis was performed to identify independent influential factors of SIS.A total of 312 cases were included and 18 cases were lost. The follow-up rate was 94.5%. In without SIS group, there were 225 cases (123 males and 102 females). In with SIS group, a total of 87 cases were included (56 males and 31 females). The incidence of SIS was 27.8%. DHT (OR = 9.385, 95% CI = 4.883 to 18.040, P < .001) and DBA (OR = 2.444, 95% CI = 1.591 to 3.755, P < .001) were the significant independent risk factor for SIS of AC dislocation treat with hook plate. DAH (OR = 0.597, 95% CI = 0.396 to 0.900, P = .014) and acromial shape with flat and straight (OR = 0.325, 95% CI = 0.135 to 0.785, P = .012) were also independent factors of SIS, but they were all protective.The SIS had a high incidence in fixation of clavicular hook plate for AC dislocation. DHT and DBA were two independent risk factors, DAH and acromial shape with flat and straight were two independent protective factors for SIS. In clinical surgery, we should avoid risk factors to reduce the incidence of SIS.

To explore the reasonable selection of clavicular hook plate to reduce the occurrence of subacromial impingement syndrome after operation.

BACKGROUND: Acromioclavicular joint dislocation is a shoulder joint injury common in the clinical setting and is generally surgically treated with clavicular hook plate technique with confirmed curative effect. However, symptoms such as shoulder abduction limitation, shoulder discomfort and joint pain postoperatively may occur in some patients. Therefore, this study aimed to explore whether the existing clavicular hook plate can be reasonably selected to reduce the incidence of subacromial impingement syndrome (SIS) and provide a reference for clinical diagnosis and treatment. MATERIALS AND METHODS: Patients with SIS admitted from March 2018 to June 2020 were selected as the experimental group and asymptomatic patients postoperatively, as the control group. The hook end depth and acromial height of the hook plate used in patients were recorded, and the difference between them was calculated. RESULTS: The difference between the hook plate depth and acromial height was 7.500±1.912 mm and 6.563±1.537 mm in the experimental and control groups, respectively, with statistically significant difference (t=3.021, P=0.006). A difference of >0.6 mm as a grouping index is required to perform a single factor analysis, with statistically significant difference (t=3.908, P=0.048). CONCLUSIONS: The occurrence of SIS after placing the clavicular hook plate may be related to the difference between its depth and the acromial height. A difference of >6 mm may be a factor affecting the occurrence of SIS. Pre-imaging measurement of the acromial height can provide suggestions for selecting the type of hook plate intraoperatively.

The incidence of impingement syndrome in cases of cervical radiculopathy: An analysis of 220 cases.

BACKGROUND: We hypothesized that cervical radiculopathy (CR) has a role in subacromial impingement syndrome (SAIS) etiology, which cannot be directly connected to anatomical causes. OBJECTIVE: We aimed to investigate the presence of cervical radiculopathy in patients with SAIS diagnosed clinically and radiologically. METHODS: Patients who had a clinical and radiological SAIS diagnosis between 2014 and 2016 were included in the study. Patients with secondary causes that led to SAIS were excluded. Cervical MRI of all patients with SAIS was examined for cervical radiculopathy. RESULTS: A significant (p< 0.05) relationship was found between SIAS and the presence of root compression on the same side. 35% of the patients with SIAS had root compression on the same side. CONCLUSIONS: Cervical radiculopathy and shoulder impingement syndrome can be easily confused due to the similarity of the symptoms and the anatomical proximity of the lesions. Although both diseases can occur with different mechanisms, we believe that there is a cause and effect relationship between them.

[Health-related quality of life in patients diagnosed with subacromial syndrome in the Talavera Integrated Area]. / Calidad de vida relacionada con la salud en los pacientes diagnosticados de síndrome subacromial en el Área Integrada de Talavera.

OBJECTIVE: There is a high prevalence of subacromial syndrome among patients with shoulder pathology, where the pain and tendency to chronification are some of its most important characteristics. This is why it is necessary to objectively interact with the quality of life of the subject. The main goal was to determine if there are differences between subacromial patients and asymptomatic patients regarding quality of life. METHODS: Transversal study carried out in the Talavera Integrated Area during the months of November 2016 to March2017. Participated a total of 92 subjects, 46 were symptomatic mating by age and sex with an asymptomatic sample and without joint pathology of the same size and health area. In both cases, the EQ-5D questionnaire was administered. The prevalence was calculated from the waiting list of traumatology physiotherapy in the year 2015. The SPSS statistical program was used, applying the T-test and the chi-square. RESULTS: The EQ-5D questionnaire obtained a standardized mean of 0.70 in the subacromial syndrome and 0.85 in the asymptomatic population (P=0.0001). The prevalence of impingement subacromial within shoulder pathology was 39.19%. CONCLUSIONS: Subacromial syndrome has a high prevalence within the shoulder pathology in the Rehabilitation Service and significantly interferes in the quality of life related to the health of the subject.

OBJETIVO: Existe una alta prevalencia del síndrome subacromial dentro de los pacientes con patología de hombro, en el cual el dolor y la tendencia a la cronificación son alguna de sus características más importantes. Por ello es necesario objetivar su interacción con la calidad de vida del sujeto. El objetivo principal del estudio fue determinar si existían diferencias en la calidad de vida entre sujetos con síndrome subacromial y asintomáticos. METODOS: Se realizó un estudio transversal en el Área Integrada de Talavera de la Reina (Toledo), durante los meses de noviembre de 2016 a marzo de 2017. Participaron un total de 92 sujetos, de los que 46 eran sintomáticos, apareándose por edad y sexo con una muestra asintomática y sin patología articular del mismo tamaño y área de salud. En ambos casos se les administró el cuestionario EQ-5D. La prevalencia se calculó a partir de la lista de espera de fisioterapia traumatológica del año 2015. Se utilizó el programa estadístico SPSS, empleándose la prueba T y la chi-cuadrado. RESULTADOS: El cuestionario EQ-5D obtuvo una media estandarizada de 0,70 en el síndrome subacromial y de 0,85 en la población asintomática (p=0,0001). La prevalencia del impingement subacromial dentro de la patología de hombro fue del 39,19%. CONCLUSIONES: El síndrome subacromial tiene una alta prevalencia dentro de la patología de hombro en el Servicio de Rehabilitación e interfiere significativamente en la calidad de vida relacionada con la salud del sujeto.

Appropriate care for orthopedic patients: effect of implementation of the Clinical Practice Guideline for Diagnosis and Treatment of Subacromial Pain Syndrome in the Netherlands.

Background and purpose - The multidisciplinary Clinical Practice Guideline for diagnosis and treatment of subacromial pain syndrome (SAPS) was created in 2012 by the Dutch Orthopedic Association. In brief, it stated that SAPS should preferably be treated nonoperatively. We evaluated the effect of the implementation of the guideline on the number of shoulder surgeries for SAPS in the Netherlands (17 million inhabitants). Patients and methods - An observational study was conducted with the use of aggregated data from the national database of the Dutch Health Authority from 2012 to 2016. Information was collected on patients referred to and seen at orthopedic departments. Data from the following Diagnoses Related Groupings were analyzed: 1450 (tendinitis supraspinatus) and 1460 (rotator cuff tear). Results - In 2016 fewer patients were diagnosed with tendinitis supraspinatus than in 2012-a decrease from 49,491 to 44,662 (10%). Of the patients diagnosed with tendinitis, 14% were treated surgically in 2012; this number dropped to 9% by 2016. More patients with a rotator cuff tear were diagnosed in 2016 than in 2012, an increase from 17,793 to 23,389 (32%), fewer were treated surgically: 30% in 2012, compared with 25% in 2016. Interpretation - After introducing the multidisciplinary Clinical Practice Guideline "Diagnosis and treatment of subacromial pain syndrome," a decrease in shoulder surgeries for related diagnoses was observed in the Netherlands. The introduction and dissemination of this guideline seems to have contributed to the implementation of more appropriate health care and prevention of unnecessary surgeries.

Scapular Notching in Reverse Total Shoulder Arthroplasty.

Scapular notching is a common radiographic finding occurring after reverse total shoulder arthroplasty, and it refers to an erosive lesion of the inferior scapular neck because of the impingement of the humeral implant during adduction. The clinical importance of notching is unclear, and the optimal treatment of severe notching is unknown. The incidence and severity of scapular notching is related to prosthetic design and surgical technique. Implant design factors include size, shape, and position of the glenosphere, inclination of the humeral neck-shaft angle, implant offset, and native scapular anatomy. Scapular notching may lead to deterioration of functional outcomes and glenoid implant loosening and failure. Lateral offset, inferior glenosphere overhang, and careful consideration of the presurgical glenoid morphology may help prevent scapular notching. Currently, there is limited evidence to direct the management of scapular notching, and further research is needed to elucidate optimal prevention and treatment strategies.

Calidad de vida relacionada con la salud en los pacientes diagnosticados de síndrome subacromial en el Área Integrada de Talavera / Health-related quality of life in patients diagnosed with subacromial syndrome in the Talavera Integrated Area

OBJETIVO: Existe una alta prevalencia del síndrome subacromial dentro de los pacientes con patología de hombro, en el cual el dolor y la tendencia a la cronificación son alguna de sus características más importantes. Por ello es necesario objetivar su interacción con la calidad de vida del sujeto. El objetivo principal del estudio fue determinar si existían diferencias en la calidad de vida entre sujetos con síndrome subacromial y asintomáticos. MÉTODOS: Se realizó un estudio transversal en el Área Integrada de Talavera de la Reina (Toledo), durante los meses de noviembre de 2016 a marzo de 2017. Participaron un total de 92 sujetos, de los que 46 eran sintomáticos, apareándose por edad y sexo con una muestra asintomática y sin patología articular del mismo tamaño y área de salud. En ambos casos se les administró el cuestionario EQ-5D. La prevalencia se calculó a partir de la lista de espera de fisioterapia traumatológica del año 2015. Se utilizó el programa estadístico SPSS, empleándose la prueba T y la chi-cuadrado. RESULTADOS: El cuestionario EQ-5D obtuvo una media estandarizada de 0,70 en el síndrome subacromial y de 0,85 en la población asintomática (p=0,0001). La prevalencia del impingement subacromial dentro de la patología de hombro fue del 39,19%. CONCLUSIONES: El síndrome subacromial tiene una alta prevalencia dentro de la patología de hombro en el Servicio de Rehabilitación e interfiere significativamente en la calidad de vida relacionada con la salud del sujeto

OBJECTIVE: There is a high prevalence of subacromial syndrome among patients with shoulder pathology, where the pain and tendency to chronification are some of its most important characteristics. This is why it is necessary to objectively interact with the quality of life of the subject. The main goal was to determine if there are differences between subacromial patients and asymptomatic patients regarding quality of life. METHODS: Transversal study carried out in the Talavera Integrated Area during the months of November 2016 to March2017. Participated a total of 92 subjects, 46 were symptomatic mating by age and sex with an asymptomatic sample and without joint pathology of the same size and health area. In both cases, the EQ-5D questionnaire was administered. The prevalence was calculated from the waiting list of traumatology physiotherapy in the year 2015. The SPSS statistical program was used, applying the T-test and the chi-square. RESULTS: The EQ-5D questionnaire obtained a standardized mean of 0.70 in the subacromial syndrome and 0.85 in the asymptomatic population (P=0.0001). The prevalence of impingement subacromial within shoulder pathology was 39.19%. CONCLUSIONS: Subacromial syndrome has a high prevalence within the shoulder pathology in the Rehabilitation Service and significantly interferes in the quality of life related to the health of the subject

Aspectos clínicos, radiográficos y rehabilitadores en pacientes con síndrome doloroso regional complejo / Clinical, radiographic and rehabilitative aspects in patients with complex painful regional syndrome

Se efectuó un estudio descriptivo y transversal de 17 pacientes con síndrome doloroso regional complejo, que recibieron rehabilitación en el Departamento de Fisioterapia del Hospital General Docente Dr Juan Bruno Zayas Alfonso de Santiago de Cuba, desde enero 2016 hasta febrero 2017, con vistas a caracterizarles según aspectos clínicos y radiográficos. Entre los principales resultados predominaron el tipo 1 de la enfermedad (64,7 por ciento), la etapa precoz (25,0 por ciento), la localización en el miembro superior (82,4 por ciento) y el sexo femenino (58,8 por ciento), entre otros. La corrección postural y la cinesiterapia fueron necesarias independientemente del estadio clínico de la enfermedad. Se concluye que resulta importante efectuar un diagnóstico clínico y radiográfico oportuno, así como ejecutar medidas rehabilitadoras tempranas para evitar la discapacidad y lograr una recuperación funcional óptima

A descriptive and cross-sectional study of 17 patients with complex painful regional syndrome who received rehabilitation in the Physiotherapy Department of Dr Juan Bruno Zayas Alfonso Teaching General Hospital was carried out in Santiago de Cuba, from January, 2016 to February, 2017, aimed at characterizing them according to clinical and radiographical aspects. Among the main results there was a prevalence of the type 1 of the disease (64.7 percent), early stage (25.0 percent), localization in the upper member (82.4 percent) and the female sex (58.8 percent), among others. The postural correction and kinesiotherapy were necessary independently of the clinical stage of the disease. It was concluded that it is important to make an appropriate clinical and radiographic diagnosis, as well as to implement early rehabilitative measures to avoid disability and achieve a good functional recovery

Glenohumeral and scapulothoracic strength impairments exists in patients with subacromial impingement, but these are not reflected in the shoulder pain and disability index.

BACKGROUND: Pain and loss of function are cardinal symptoms associated with Subacromial impingement syndrome (SIS), while the presence and magnitude of deficits in strength and range of motion (ROM) are largely undescribed in non-athletic patients with SIS. Moreover, the relevance of impairments in strength and ROM to patient-reported shoulder function is not well described, even though testing of strength is recommended in clinical guidelines. The purpose of this study was, first, to investigate impairments in glenohumeral and scapulothoracic strength and in abduction and internal rotation ROM in patients with SIS. Secondly, to investigate the influence of these impairments on patient-reported shoulder function. METHODS: Cross-sectional study based on a consecutive cohort of 157 patients referred to specialist examination and diagnosed with shoulder impingement (SIS) using predefined validated diagnostic criteria. Prior to specialist examination, questionnaires regarding shoulder function (Shoulder Pain And Disability Index, SPADI) demographics and kinesiophobia (TSK-11) were collected, and shoulder strength and ROM was measured by trained testers, with the patient reporting pain levels during testing and for the last week. Impairments in strength (abduction, external-rotation, (protraction and horizontal-extension) and ROM (abduction and internal rotation) were investigated in patients with unilateral shoulder pain, using one-sample t-tests. SPADI total score (SPADI) and SPADI function score (SPADI-F), were chosen as dependent variables in multiple regressions to investigate the influence of impairments on patient-reported shoulder function. Independent variables of interest were; strength in abduction and external rotation, abduction ROM, pain-during-tests, pain-last-week and kinesiophobia. RESULTS: Significant impairments were found for all impairment tests, but most pronounced for glenohumeral strength and abduction ROM (29-33% deficits), and less for scapulothoracic strength and internal rotation ROM (8-18% deficits). Pain variables influenced SPADI and SPADI-F score to a high degree (R2 = 23.4-31.6%, p < 0.001), while strength and ROM did not. CONCLUSION: Substantial strength and ROM impairments were found in patients with SIS. Only pain significantly influenced patient-reported function, while impairments did not. As SPADI score does not reflect the substantial strength and ROM impairments in external rotation and abduction observed in patients with SIS, supplemental assessment of these impairments seems important.

Critical shoulder angle combined with age predict five shoulder pathologies: a retrospective analysis of 1000 cases.

BACKGROUND: Acromial morphology has previously been defined as a risk factor for some shoulder pathologies. Yet, study results are inconclusive and not all major shoulder diseases have been sufficiently investigated. Thus, the aim of the present study was to analyze predictive value of three radiological parameters including the critical shoulder angle, acromion index, and lateral acromion angle in relationship to symptomatic patients with either cuff tear arthropathy, glenohumeral osteoarthritis, rotator cuff tear, impingement, and tendinitis calcarea. METHODS: A total of 1000 patients' standardized true-anteroposterior radiographs were retrospectively assessed. Receiver-operating curve analyses and multinomial logistic regression were used to examine the association between shoulder pathologies and acromion morphology. The prediction model was derived from a development cohort and applied to a validation cohort. Prediction model's performance was statistically evaluated. RESULTS: The majority of radiological measurements were significantly different between shoulder pathologies, but the critical shoulder angle was an overall better parameter to predict and distinguish between the different pathologies than the acromion index or lateral acromion angle. Typical critical shoulder angle-age patterns for the different shoulder pathologies could be detected. Patients diagnosed with rotator cuff tears had the highest, whereas patients with osteoarthritis had the lowest critical shoulder angle. The youngest patients were in the tendinitis calcarea and the oldest in the cuff tear arthropathy group. CONCLUSIONS: The present study showed that critical shoulder angle and age, two easily assessable variables, adequately predict different shoulder pathologies in patients with shoulder complaints.

Responsiveness and minimal important change of the Norwegian version of the Disabilities of the Arm, Shoulder and Hand questionnaire (DASH) in patients with subacromial pain syndrome.

BACKGROUND: The Disabilities of the Arm, Shoulder, and Hand questionnaire (DASH) is a valid and reliable patient-reported outcome measure (PROM). It was designed to measure physical disability and symptoms in patients with musculoskeletal disorders of the upper extremity, and is one of the most commonly used PROMs for patients with shoulder pain. The aim of this study was to examine responsiveness, the smallest detectable change (SDC) and the minimal important change (MIC) of the DASH, in line with international (COSMIN) recommendations. METHODS: The study sample consisted of 50 patients with subacromial pain syndrome, undergoing physical therapy for 3-4 months. Responsiveness to change was examined by calculating area under the receiver operating characteristic curves (AUC) and testing a priori-formulated hypothesis regarding correlations with changes in other instruments that measuring the same construct. The SDC was calculated using a test re-test protocol, and the MIC was calculated by the anchor-based MIC distribution. MIC values for patients with low and high baseline scores were also calculated. RESULTS: DASH appeared to be responsive, as it was able to distinguish patients who reported to be improved from those unchanged (AUC 0.77). All of the hypotheses were accepted. The SDC was 11.8, and the MIC was 4.4. CONCLUSION: This study shows that the Norwegian version of the DASH has good responsiveness to change and may thus be recommended to measure outcome in patients with shoulder pain in Norway.

Correlación entre la exploración física y los hallazgos intraoperatorios de patología de hombro tratada mediante artroscopia. Análisis estadístico de 150 pacientes / Correlation between physical examination and intraoperative findings in shoulder disease treated by arthroscopy. Statistical analysis of 150 patients

Introducción. En la patología del hombro pocas son las maniobras exploradoras verdaderamente discriminatorias y útiles en la clínica. El objetivo de nuestro trabajo es correlacionar la exploración física del hombro con el diagnóstico real hallado por artroscopia. Métodos. Estudio retrospectivo tipo serie de casos de 150 pacientes con las principales patologías quirúrgicas de hombro. Se recogieron datos de la sospecha de cada patología según la exploración física del paciente y el hallazgo real de las mismas durante la cirugía artroscópica. Resultados. Las maniobras de exploración de la lesión de Bankart es la que ha obtenido mejores resultados con un valor predictivo positivo (VPP) del 92,1% y un valor predictivo negativo (VPN) del 99,1%, seguida por el síndrome subacromial con un VPP del 94,4%, la rotura total del manguito con un VPP del 92,3%. La exploración en la lesión SLAP tiene un VPN de 99,1%. Conclusión. La exploración física es suficiente para diagnosticar o descartar una lesión de Bankart. Una exploración física positiva es diagnóstica de rotura total del manguito de los rotadores y no requiere estudios complementarios. Los pacientes con sospecha de síndrome subacromial solo necesitarán una RM confirmatoria si los test físicos son negativos. Las conclusiones extraídas del presente trabajo pueden tener una importante repercusión tanto en ahorro de costes (por reducción de pruebas complementarias), como por ahorro de tiempo en determinados casos en los que, tras la exploración física adecuada, se puede indicar cirugía sin necesidad de pasos intermedios (AU)

Introduction. Only a few clinical exploratory manoeuvres are truly discriminatory and useful in shoulder disease. The aim of this study is to correlate the physical examination results of the shoulder with the true diagnosis found by arthroscopy. Methods. A retrospective case series of 150 patients with the most common surgical conditions of the shoulder. Data were collected on the suspicion of each pathology, the physical examination of the patient, and the actual discovery of the disease during arthroscopic surgery. Results. The Bankart examination manoeuvres of the lesion show the best results, with a 92.1% positive prediction value (PPV), a 99.1% negative predictive value (NPV), followed by the impingement syndrome, with a PPV of 94.4%, and total cuff rupture with a PPV of 92.3%.Exploration of the superior labrum anterior to posterior (SLAP) lesion had an NPV of 99.1%. Conclusion. Physical examination is sufficient to diagnose or rule out Bankart. A positive physical examination provides the complete rupture of the rotator cuff, and requires further studies. The patients suspected of subacromial syndrome only need an NMR if the physical tests are negative. The conclusions drawn from this work can have a significant impact on both cost savings (by reducing forward tests), and saving time in certain cases in which, after appropriate physical examination, surgery may be indicated without losing time in intermediate steps (AU)

A validation of the Swedish version of the WORC index in the assessment of patients treated by surgery for subacromial disease including rotator cuff syndrome.

BACKGROUND: The Western Ontario Rotator Cuff Index (WORC) is a widely used instrument to measure quality of life in patients with subacromial pain or rotator cuff syndrome. The purpose of this study was to evaluate the psychometric properties of the Swedish version of the WORC for assessment of subacromial disease including rotator cuff syndrome treated by surgery. METHODS: A total of 65 patients were included in this study, mean age 60 years (range 36-82), 42% women, all were candidates for surgery for subacromial pain conditions at two orthopedic units during 2004-2006 and 2011-2012. Calculations of the validity of Pearson's correlation coefficient, floor and ceiling effects, reliability and responsiveness have formed the basis of assessment of the WORC index properties. WORC has been tested against Western Ontario Osteoarthritis of the Shoulder (WOOS), Oxford Shoulder Score and EQ-5D. An additional 49 patients, mean age 64 years (range 36-74) 20% of whom were women, were analyzed in a WORC test-retest with ICC and also correlated to Constant-Murley Score. RESULTS: The validity analysis of WORC showed high correlations with both the specific and the generic health measurement instrument. The reliability calculations of the WORC resulted in ICC = 0.97 and Cronbach's alpha = 0.97. Responsiveness was also excellent for WORC with Effect size = 1.35 and Standardized Response mean = 1.01. We found that the WORC showed a strong correlation with the WOOS (0.97) and the Constant-Murley Score (0.85). A good correlation was found with the Oxford Shoulder Score (0.74) and the EQ-5D (0.71). CONCLUSIONS: The Swedish version of WORC can be considered reliable, valid and responsive for use as an assessment of outcome and a health measurement instrument for patients treated by surgery for subacromial disease including rotator cuff syndrome.

The Use of Physiotherapy among Patients with Subacromial Impingement Syndrome: Impact of Sex, Socio-Demographic and Clinical Factors.

BACKGROUND: Physiotherapy with exercises is generally recommended in the treatment of patients with subacromial impingement syndrome (SIS). OBJECTIVE: We aimed to investigate the use of physiotherapy in patients with SIS in Danish hospital settings as part of initial non-surgical treatment and after SIS-related surgery and to evaluate to which extent sex, socio-demographic and clinical factors predict the use of physiotherapy. METHODS: Using national health registers, we identified 57,311 patients who had a first hospital contact with a diagnosis of ICD-10, groups M75.1-75.9, 1 July 2007 to 30 June 2011. Records of physiotherapy were extracted within 52 weeks after first contact (or until surgery), and for surgically treated patients within 26 weeks after surgery. Predictors of the use of physiotherapy after first contact and after surgery were analysed as time-to-event. RESULTS: Within 52 weeks after first contact, 43% of the patients had physiotherapy and 30% underwent surgery. Within 26 weeks after surgery, 80% had a record of physiotherapy. After first contact and after surgery, exercise was part of physiotherapy in 65% and 84% of the patients, respectively. A public hospital contact, physiotherapy before hospital contact, administrative region, female sex, a diagnosis of other or unspecified disorders (M75.8-M75.9), and surgical procedure predicted higher use of physiotherapy. Low education level predicted slightly lower use of physiotherapy after first contact, but not after surgery. CONCLUSION: In patients with SIS in Danish hospital settings, physiotherapy was more often used after surgery than as part of initial non-surgical treatment. The use of physiotherapy was less common among men than women, whereas unequal use of physiotherapy in relation to education level was not noticeable. The use of physiotherapy with exercises in initial non-surgical treatment was relatively limited.

Subacromial shoulder disorders among baggage handlers: an observational cohort study.

PURPOSE: To assess the influence of cumulative employment as baggage handler on the risk of incident subacromial shoulder disorders. Baggage handling is characterized by repetitive work primarily consisting of heavy lifting in awkward positions and time pressure. METHODS: This cohort study is based on the Copenhagen Airport Cohort consisting of unskilled men with employment at Copenhagen Airport and unskilled men with employment in other firms in the Greater Copenhagen area during the period 1990-2012. Only men were included. We followed the cohort in the National Patient Register and Civil Registration System. The primary exposure was cumulative years of employment as a baggage handler, and the primary outcome was diagnoses and surgical treatment of subacromial shoulder disorders. RESULTS: The cohort contained 3396 baggage handlers and 63,909 workers in the reference group. Baggage handlers with longer cumulative years of employment had higher incidence compared to baggage handlers with shorter employment; for example, baggage handlers with 10-19 years of employment had incidence rate ratio of 2.07 (95 % confidence interval, 1.27-3.38) compared to baggage handlers with less than 3 years of employment. Spline regression showed an increase in incidence within the first few years after employment whereupon the increased risk remained constant for longer employment. Baggage handlers had increased incidence in younger ages than the reference population. CONCLUSIONS: In this large cohort study, we found increased incidence of subacromial shoulder disorders for workers with longer cumulative years of employment. These results support that long-term lifting in awkward positions and time pressure influences the risk of subacromial shoulder disorders.

Heterogeneous MR arthrography findings in patients with subacromial impingement syndrome - Diagnostic subgroups?

BACKGROUND: Subacromial Impingement Syndrome (SIS) is frequently diagnosed, but treatment results vary greatly. It is increasingly reported that SIS symptoms are caused by various underlying mechanisms that need distinctive treatment strategies. We evaluated a set of specific MRI Arthrography (MRA) characteristics that have been related with underlying mechanisms for SIS in the literature, in patients with SIS. METHODS: In 47 patients diagnosed with SIS, MRA characteristics were evaluated and categorized into categories of potential underlying mechanisms: (1) extrinsic: e.g. acromion shape; (2) intrinsic: e.g. tendinosis; (3) dynamic: e.g. signs of glenohumeral (micro-)instability. Control values were obtained from the literature. With cluster analysis, potential patient subgroups were assessed. RESULTS: In 17 (36.2%) patients originally diagnosed with SIS, specific other conditions were found, including rotator cuff tears and labrum lesions. In the remaining 30, all had positive signs of at least one of the predefined underlying mechanisms. Patients could be categorized into 2 groups: predominantly findings corresponding with extrinsic/structural causes, or with dynamic/(micro)instability. CONCLUSIONS: MRA characteristics in patients with SIS symptoms are heterogeneous and many patients have specific other shoulder conditions causing symptoms. Patients without specific other conditions have MRA characteristics associated with either extrinsic (structural), or dynamic (e.g. micro-instability) underlying mechanisms.