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Do shoulder patients insured by workers' compensation present with worse self-assessed function and health status?

The purpose of this study was to test the hypothesis that patients whose shoulder problems are covered by workers' compensation insurance perceive worse shoulder function and health status than do comparable patients whose problem is not covered by workers' compensation. Each of 1063 consecutive patients presenting with shoulder problems to an individual consultant completed 2 questionnaires: the Simple Shoulder Test inventory of shoulder function and the Short Form 36 general health assessment. The patients were divided into 2 groups on the basis of whether care of the shoulder problem was covered by injured workers' compensation insurance. The results indicate that patients whose shoulder condition is covered by workers' compensation have significantly lower self-assessed shoulder function and health status than do those patients whose shoulder conditions are not related to on-the-job injuries. The differences between the workers' compensation and non-workers' compensation groups could not be attributed to differences in age, sex, or diagnosis.

Adult↗

Correlates with comfort and function after total shoulder arthroplasty for degenerative joint disease.

Although most patients are improved after shoulder arthroplasty, the degree of improvement is variable. The factors contributing to this variability are not well understood. In particular, little information is available regarding the preoperative characteristics of the patient that may influence the quality of the result. This study correlated patient demographics, preoperative health status, and preoperative shoulder function with 3 outcome metrics: comfort, physical role function, and shoulder-specific function. One hundred thirty-four shoulders having total shoulder arthroplasty for degenerative glenohumeral joint disease had an average follow-up of 3.4 +/- 1.8 years. The SF-36 Comfort score improved from 39 to 61 (P < .0001). The SF-36 Physical Role Function score improved from 30 to 52 (P < .0001). The average number of Simple Shoulder Test functions performable (out of 12) improved from 4 to 9 (P < .0001). The strongest correlates with postoperative comfort included preoperative physical function (P < .0001), general health (P < .0001), and social function (P < .001). The strongest correlates with postoperative physical role function included preoperative physical function (P < .0001) and general health (P < .001). The strongest correlates with postoperative shoulder function included male gender (P < .0001), and preoperative physical function (P < .0001), social function (P < .0001), mental health (P < .0001) and shoulder function (P < .0001). These data indicate that the overall well-being of the patient before surgery is strongly correlated with the quality of the outcome from total shoulder arthroplasty for degenerative glenohumeral joint disease.

Adult↗

Long-term clinical and radiologic results after Eden-Hybbinette operation for anterior instability of the shoulder.

A retrospective study was done to assess long-term results after surgery with the Eden-Hybbinette technique for unidirectional anterior glenohumeral instability. Between 1962 and 1976, 118 patients (119 shoulders) were treated. Eighty-seven patients answered a questionnaire. Of 119 shoulders, 77 were examined clinically and 74 radiographically a mean of 29 years after surgery. Forty-two were lost to follow-up. For 74% of shoulders, patients were satisfied, and for 26%, patients had some remaining discomfort. The most common reason for discomfort was persistent instability. The recurrence rate was 20%, although only 8 patients required reoperation. The mean time from surgery until redislocation was 15 months (range, 1-60 months). The mean Rowe shoulder score was 84 +/- 15 (range, 45-100), with 48 of 77 shoulders rated as excellent, 16 of 77 as good, 9 of 77 as fair, and 4 of 77 as poor. The Constant-Murley score averaged 85 +/- 14 (range, 20-100). Glenohumeral arthrosis was seen in 35 of 74 shoulders (47%). There was no significant difference between those with arthrosis and those without as far as age at first dislocation, age at surgery, or follow-up. Shoulders with arthrosis had a tendency to have reduced external rotation (P =.056) when compared with shoulders without radiologic changes. This study showed that most patients were satisfied with their shoulders. There was a high rate of radiologic arthrosis, but in most patients it caused limited restriction of movement as the only symptom.

Adult↗

Shoulder joint involvement in patients with newly diagnosed rheumatoid arthritis. Prevalence and associations.

OBJECTIVE: To estimate the prevalence of reduced function, compared to normative values, and tenderness in the shoulder in patients with newly diagnosed rheumatoid arthritis (RA), and to investigate associated factors. METHODS: Eighty consecutive patients with RA, participating in a prospective study of early rheumatoid arthritis, were examined and assessed within one year of the onset of symptoms. RESULTS: The prevalence of tenderness from any of the shoulder joints was 50%, while 30% had decreased shoulder function, compared with age matched controls, in at least one shoulder. Both tender shoulder joints and decreased shoulder function were related to higher age and more severe disease, reflected by disability (HAQ) and the patient's assessment of pain and global disease activity. CONCLUSION: The shoulder girdle is involved early and often in rheumatoid arthritis and involvement is associated with a substantially more severe disease status. The study suggests that the shoulder should be given attention in patients with newly diagnosed rheumatoid arthritis, and that both tenderness and shoulder function should be evaluated.

Adult↗

Analysis of rotation accompanying shoulder flexion.

For effective rehabilitation of the shoulder, physical therapists must have correct knowledge of shoulder motion. Reports conflict on whether medial or lateral rotation of the humerus accompanies shoulder flexion. The purpose of this study was to determine the relationship between flexion and rotation at the glenohumeral joint. We determined rotation that accompanied active shoulder flexion by using a universal full-circle goniometer and an adjustable wooden bracket that served as a base for a gravity-activated angle finder. Therapists performed passive shoulder flexion with the humerus held allowing no rotation and then held in medial or lateral rotation. We used single-tailed t tests to determine analysis. We found significant differences (p less than .01) between the amount of shoulder rotation accompanying active shoulder flexion between men and women. Medial rotation of the shoulder accompanied active flexion in all subjects. Physical therapists should consider these results when the goal of treatment is to increase shoulder flexion.

Adolescent↗

The frequency of restricted range of movement in individuals with self-reported shoulder pain: results from a population-based survey.

Prevalence studies suggest that shoulder pain is very common (7-20%) in the adult population, though little is known about the severity and impact of such pain. Disability results, in part, from the restriction of movement and we therefore determined the frequency of restricted shoulder movement in individuals in a general population sample reporting shoulder pain and associated disability. In all, 232 individuals were interviewed about shoulder pain and related disability, and their range of shoulder movement in the following planes was measured: elevation, forward flexion, backward flexion, external rotation and internal rotation, together with the minimum difference achieved between the tip of a thumb and the spinous process of C7. In total, 48 (21%) subjects reported current pain and disability in one or both shoulders. Using receiver operating characteristic (ROC) analysis, cut-offs for restricted movements were selected at the point of maximal discrimination between painful and pain-free shoulders. There was considerable overlap in the distribution of range of movement, at all six sites, between these two groups. The highest positive predictive value for pain was observed in restriction of the thumb to cervical spine movement (53%), but this also had the lowest negative predictive value. By contrast, the highest negative predictive value was observed for restriction of external rotation (96%). Restriction in any plane was observed in 77% of those individuals with pain, but was also present in half of those without pain. In summary, most people with self-reported shoulder pain in the community do not have widespread restriction of movement. Reduction in external rotation was the most discriminatory, but it is necessary to examine movement in multiple planes to assess the true burden of shoulder pain in the community.

Adolescent↗

Shoulder joint impairment among Finns aged 30 years or over: prevalence, risk factors and co-morbidity.

OBJECTIVES: To describe the prevalence, risk factors and consequences of shoulder joint impairment in the population. METHODS: A representative sample (n = 7217) of the Finnish population aged > or = 30 yr participated in a health examination survey (the Mini-Finland Health Survey). The design of the survey allowed an independent assessment of disability, reported shoulder pain, shoulder joint impairment and major chronic co-morbidity. RESULTS: Shoulder impairment was observed in 8.8%, while pain was reported by 30%. The prevalence of shoulder pain decreased among the elderly, whereas impairments increased up to 20% of those aged 75-80 yr. In addition to age, sex, previous injury to the shoulder joint and a history of physically heavy work, diabetes was associated with shoulder impairment (OR 1.6, 95% CI 1.2-2.1). Shoulder impairment was associated with disability (adjusted OR 2.0, CI 1.6-2.5). CONCLUSIONS: Shoulder impairment is an important component of ill health among the elderly, and cannot be reduced to reported pain alone.

Adult↗

Suprascapular nerve block for ipsilateral shoulder pain after thoracotomy with thoracic epidural analgesia: a double-blind comparison of 0.5% bupivacaine and 0.9% saline.

UNLABELLED: Despite receiving thoracic epidural analgesia, severe ipsilateral shoulder pain is common in patients after thoracotomy. We recruited 44 patients into a double-blinded randomized placebo-controlled study to investigate whether suprascapular nerve block would treat postthoracotomy shoulder pain effectively. All patients received a standard anesthetic with a midthoracic epidural. Thirty patients who experienced shoulder pain within 2 h of surgery were randomly assigned to receive a suprascapular nerve block with either 10 mL of 0.5% bupivacaine or 10 mL of 0.9% saline. Shoulder pain was assessed before nerve blockade, at 30 min, and then hourly for 6 h after the block using a visual analog scale (VAS) and a 5-point verbal ranking score (VRS). The incidence of shoulder pain before nerve block was 78%. There was no significant decrease in either VAS or VRS in the Bupivacaine group. These results suggest that this pain is unlikely to originate in the shoulder and lead us to question the role of a somatic afferent in referred visceral pain. We conclude that suprascapular nerve block does not treat ipsilateral shoulder pain after thoracotomy in patients with an effective thoracic epidural. IMPLICATIONS: This randomized, double-blinded, placebo-controlled trial showed that suprascapular nerve block does not treat the severe ipsilateral shoulder pain that patients experience after thoracotomy. This has implications for established theories of referred pain and indicates that this pain is unlikely to originate in the shoulder.

Adult↗

Shoulder dystocia--a clinical study of 56 cases.

A retrospective analysis of 17,127 singleton vaginal deliveries revealed 56 cases of shoulder dystocia giving an incidence of 0.3%. Although an increasing incidence of shoulder dystocia was noted as the infant birth-weight increased, 41% of shoulder dystocia occurred in infants of average birth-weight (2,500-3,999g). Diabetes mellitus, postmaturity, maternal weight above 90 kg were each factors associated with a large sized infant which should signal the possible occurrence of shoulder dystocia. In the present series shoulder dystocia occurred in 2.7% of all infants weighing 4,000 g or more. Diabetic women experienced shoulder dystocia more often than non-diabetics. In the diabetics 15.7% of neonates of birth-weight 4,000 g and above sustained shoulder dystocia compared to 1.6% in the nondiabetic patients. Immediate neonatal injury was apparent in 43% of infants with shoulder dystocia, Erb palsy being the commonest injury. The perinatal mortality rate in the series was 54/1,000 deliveries. There was no maternal death. To avoid the potentially lethal and dangerous complications of shoulder dystocia, all clinical and technological methods available should be utilized to detect the excessive sized infants so that abdominal delivery may be performed before it is too late.

Adult↗

A randomised study of two training programmes for general practitioners in the techniques of shoulder injection.

OBJECTIVES: To evaluate the impact of two different modes of shoulder injection training on the level of confidence and number of injections performed by general practitioners (GPs) METHODS: Demographic details, and information on referrals for shoulder problems, shoulder joint injection activity, and confidence in the six months before training were obtained for 40 GP principals at baseline. Standardised training in the techniques of shoulder joint injection using rubber mannequins was given to all GPs. Twenty of these GPs were randomly allocated to receive additional training on patients in hospital joint injection clinics. Six months after both forms of training the shoulder injection and referral activities of all GPs were reassessed. RESULTS: Both training groups had comparable demographic characteristics and baseline clinical activity. GPs who had additional training with patients reported a marked increase in their level of confidence in performing shoulder injections and the number performed. The number of shoulder referrals did not differ between the groups CONCLUSION: Training on patients in addition to conventional training on mannequins increased GPs' shoulder injection activity and their level of confidence. Hospital injection clinics may provide a suitable setting in which to train GPs interested in developing their shoulder joint injection skills.

Clinical Competence↗

Management of shoulder pain in patients with stroke.

Shoulder pain affects from 16% to 72% of patients after a cerebrovascular accident. Hemiplegic shoulder pain causes considerable distress and reduced activity and can markedly hinder rehabilitation. The aetiology of hemiplegic shoulder pain is probably multifactorial. The ideal management of hemiplegic stroke pain is prevention. For prophylaxis to be effective, it must begin immediately after the stroke. Awareness of potential injuries to the shoulder joint reduces the frequency of shoulder pain after stroke. The multidisciplinary team, patients, and carers should be provided with instructions on how to avoid injuries to the affected limb. Foam supports or shoulder strapping may be used to prevent shoulder pain. Overarm slings should be avoided. Treatment of shoulder pain after stroke should start with simple analgesics. If shoulder pain persists, treatment should include high intensity transcutaneous electrical nerve stimulation or functional electrical stimulation. Intra-articular steroid injections may be used in resistant cases.

Hemiplegia↗

Shoulder pain after stroke: a prospective population-based study.

BACKGROUND AND PURPOSE: Shoulder pain is a well-known complication after stroke, but data on prevalence, predictors, and outcome in unselected stroke populations are limited. METHODS: During a 1-year period, 416 first-ever stroke patients were included in the population-based Lund Stroke Register. After 4 months, 327 patients were followed up and 1 year later, the surviving 305 patients were followed up again. General status (National Institutes of Health Stroke Scale score) was registered at stroke onset. Shoulder pain intensity (visual analog scale, score 0 to 30=no-mild and 40 to 100=moderate-severe pain); arm motor function; restricted dressing and/or ambulating; and functional status (Barthel Index) were registered at both follow ups. RESULTS: Shoulder pain onset within 4 months after stroke was reported by 71 patients (22%). Among the 61 patients able to score the visual analog scale, 79% had moderate-severe pain. One year later, 8 of these 71 patients had died, 17 had no remaining pain, and 28 additional patients had developed shoulder pain since the first follow up. Lost or impaired arm motor function and high National Institutes of Health Stroke Scale score were predictors of shoulder pain. Shoulder pain restricted daily life often or constantly when dressing for 51%/31% and when ambulating for 29%/13% of the patients at 4 and 16 months, respectively. CONCLUSIONS: Almost one third of the 327 patients developed shoulder pain after stroke onset, a majority with moderate- severe pain. Shoulder pain restricts patients' daily life after stroke. The increased risk of shoulder pain for patients with impaired arm motor function and/or low general status needs close attention in poststroke care.

Adolescent↗

Arthroscopic laser-assisted capsular shift in the treatment of patients with multidirectional shoulder instability.

BACKGROUND: In recent years, various investigators have begun using lasers in the treatment of shoulder instability. HYPOTHESIS: Arthroscopic laser-assisted capsular shift is an effective treatment for patients with multidirectional shoulder instability. STUDY DESIGN: Retrospective cohort study. METHODS: We retrospectively identified 28 patients (30 shoulders) with multidirectional shoulder instability who were unresponsive to nonoperative management and who had undergone the laser-assisted capsular shift procedure. Twenty-five patients (27 shoulders) with an average follow-up of 28 months were available for review. All patients underwent a physical examination and completed a general questionnaire; the University of California, Los Angeles, shoulder rating scale; the Western Ontario Shoulder Instability Index; and the Short-Form 36 quality of life index. RESULTS: In 22 shoulders, results of the procedure were considered a success because the patients had no recurrent symptoms and at latest follow-up had required no further operative intervention. In five shoulders, results were considered a failure because of recurrent pain or instability and the need for an open capsular shift procedure. With recurrent instability as a measure of failure, the overall success rate was 81.5%. CONCLUSIONS: Our results with laser-assisted capsular shift are comparable with the results of other open and arthroscopic techniques in relieving pain and returning athletes to their premorbid function.

Adolescent↗

Prevalence and variance of shoulder injuries in elite collegiate football players.

BACKGROUND: Shoulder injuries are the fourth most common musculoskeletal injury encountered in American football players. There is little information in the literature on the role of playing position in the type of shoulder injuries seen. HYPOTHESIS: There is a high prevalence of shoulder injuries in elite collegiate American football players, with type of injury varying by playing position. STUDY DESIGN: Cohort study (prevalence); Level of evidence, 3. METHODS: A total of 336 elite collegiate American football players were invited to the National Football League Combine for physical testing and medical evaluation. Current and historical data were evaluated for the purpose of this study, and all players underwent radiographic examinations, including plain radiographs and/or magnetic resonance imaging when necessary. All shoulder pathological conditions and shoulder surgical procedures were recorded. Players were categorized by position for the analysis of position-specific trends. RESULTS: Of the players, 50% had a history of shoulder injuries, with a total of 226 shoulder injuries (1.3 injuries per player injured); 56 players (34%) had a total of 73 surgeries. The most common injuries were acromioclavicular separation (41%), anterior instability (20%), rotator cuff injury (12%), clavicle fracture (4%), and posterior instability (4%). The most common surgeries performed were anterior instability reconstruction (48%), Mumford/Weaver-Dunn surgery (15%), posterior instability surgery (10%), and rotator cuff surgery (10%). Shoulder injuries were more common in quarterbacks and defensive backs. Surgery was more common in linebackers or linemen. A history of anterior instability was more common in defensive players, with surgery required 76% of the time. Linemen had more rotator cuff injuries and posterior instability than players in other positions. CONCLUSION: Shoulder injuries are common injuries in elite collegiate football players, with one-third undergoing surgical procedures. There are definitive trends in the types of injuries per player position.

Acromioclavicular Joint↗

Shoulder pain in wheelchair athletes. The role of muscle imbalance.

Shoulder rotator cuff impingement syndrome is a common and disabling problem for the wheelchair athlete. In this study we investigated the role of shoulder strength imbalance as a factor for the development of this syndrome. Nineteen paraplegic male athletes underwent clinical and isokinetic examination of both shoulders with peak torque values measured in abduction, adduction, and internal and external rotation. Twenty athletic, able-bodied men without shoulder problems were tested as controls. Ten (26%) of the paraplegic athletes had rotator cuff impingement syndrome. The results of the isokinetic testing demonstrated that 1) the paraplegics' shoulders were stronger than the controls in all directions (P < 0.05); 2) the strength ratio of abduction: adduction was higher for paraplegic athletes (P < 0.05); 3) paraplegics' shoulders with rotator cuff impingement syndrome were weaker in adduction and external and internal rotation than the paraplegic athletes without impingement syndrome (P < 0.05); and 4) paraplegics' shoulders with rotator cuff impingement syndrome had higher abduction:adduction and abduction:internal rotation strength ratios than the shoulders of paraplegics without impingement syndrome (P < 0.05). We concluded that shoulder muscle imbalance, with comparative weakness of the humeral head depressors (rotators and adductors), may be a factor in the development and perpetuation of rotator cuff impingement syndrome in wheelchair athletes.

Adult↗

Long-term results of the Latarjet procedure for the treatment of anterior instability of the shoulder.

We performed ninety-five consecutive Latarjet procedures for the treatment of recurrent anterior instability of the shoulder between 1969 and 1983. In 1993, we retrospectively reviewed the clinical and radiographic results that were available for fifty-six patients (fifty-eight shoulders) who had been followed for an average of 143 years (range, ten to twenty-three years). The purpose of the study was to determine the prevalence of glenohumeral osteoarthrosis and the factors related to its development after the Latarjet procedure. The procedure was performed for the treatment of recurrent anterior dislocation in fifty shoulders and painful recurrent anterior subluxation in eight. All patients had a radiographic evaluation (three anteroposterior radiographs, with the humerus in external, neutral, and internal rotation, and one lateral radiograph) before the operation and at the latest follow-up examination. At the time of the latest follow-up, none of the patients had recurrent dislocation, six patients had apprehension with regard to possible dislocation, and one had occasional subluxation. According to the system of Rowe et al., fifty-one (88 per cent) of the fifty-eight shoulders had an excellent or good result; five (9 per cent), a fair result; and two (3 per cent), a poor result. Twenty-two shoulders had no glenohumeral osteoarthrosis. Thirty-four shoulders had centered glenohumeral osteoarthrosis (the humeral head remained in front of the center of the glenoid cavity), which was grade 1 in twenty-five shoulders, grade 2 in four, grade 3 in three, and grade 4 in two, and two shoulders had grade-4 eccentric glenohumeral osteoarthrosis (the humeral head was more proximal than normal in relation to the center of the glenoid cavity). Postoperative grade-1 glenohumeral osteoarthrosis, unlike the higher grades, had no effect on the function of the shoulder.

Activities of Daily Living↗

The influence of rotator cuff disease on the results of shoulder arthroplasty for primary osteoarthritis: results of a multicenter study.

BACKGROUND: Rotator cuff disease is uncommon in primary glenohumeral osteoarthritis. Consequently, the prognostic implications of rotator cuff disease in patients undergoing prosthetic replacement for the treatment of primary glenohumeral osteoarthritis are uncertain. The purpose of this study was to report the effects of the condition of the supraspinatus tendon and the rotator cuff musculature on the results of shoulder arthroplasty in the treatment of primary osteoarthritis. METHODS: Five hundred and fifty-five shoulders in 514 patients who had an arthroplasty for the treatment of primary glenohumeral osteoarthritis as part of a multicenter study were evaluated. Forty-one shoulders had a partial-thickness tear of the supraspinatus, and forty-two had a full-thickness tear. Ninety shoulders had moderate (stage-2) fatty degeneration of the infraspinatus, and nineteen had severe (stage-3 or 4) degeneration. Eighty-four shoulders had moderate fatty degeneration of the subscapularis, and fifteen had severe degeneration. The influence of the condition of the supraspinatus tendon and the infraspinatus and subscapularis musculature on the postoperative outcome was evaluated with respect to the scores according to the system of Constant and Murley, active mobility, subjective satisfaction, radiographic result, and rate of complications. RESULTS: The shoulders were evaluated at a mean of 43.1 months postoperatively. With the numbers available, supraspinatus tears were not found to influence the postoperative outcome with respect to the total Constant score, active mobility, subjective satisfaction, radiographic result, or rate of complications. Additionally, the treatment of these tears did not markedly influence the outcome parameters. Conversely, both shoulders with moderate fatty degeneration and those with severe degeneration of the infraspinatus were associated with poorer results than those with no degeneration with respect to the total Constant score (p < 0.0005), active external rotation (p < 0.0005), active forward flexion (p = 0.001), and subjective satisfaction (p = 0.031). Similar although less dramatic results were seen with fatty degeneration of the subscapularis. CONCLUSIONS: This study demonstrates that minimally retracted or nonretracted rotator cuff tears that are limited to the supraspinatus tendon do not appreciably affect most shoulder-specific outcome parameters in shoulder arthroplasty performed for the treatment of primary osteoarthritis. Conversely, fatty degeneration of the infraspinatus and, less importantly, subscapularis musculature adversely affects many of these parameters.

Adult↗

Shoulder contracture and osseous deformity in obstetrical brachial plexus injuries.

BACKGROUND: The purposes of this study were to determine the prevalence of and the association between shoulder contracture and osseous deformity in a cohort of children with an obstetrical brachial plexus injury and to identify the risk factors for these complications. METHODS: In a retrospective cohort study, all children with an obstetrical brachial plexus injury who had been born between January 1991 and January 1998 at one academic medical center and all those with the same diagnosis who had been born elsewhere during the same period and were referred to the medical center within six weeks after delivery were evaluated at fixed time-intervals by one examiner. The patients underwent a final orthopaedic, neurological, and radiographic examination at a mean age of 3.7 years (range, one to seven years). Shoulder contracture was defined as a decrease in the passive range of motion in one or more directions compared with the range on the unaffected side. Osseous deformity was defined as a nonspherical humeral head or an abnormal glenoid. RESULTS: The prevalence of a shoulder contracture of >10 degrees was 56% (twenty-nine of fifty-two patients), and the prevalence of an osseous deformity was 33% (sixteen of forty-eight patients with complete radiographic follow-up). In the children in whom complete neurological recovery was delayed (i.e., recovery was more than three weeks after birth), the prevalence of shoulder contracture was 54% (thirteen of twenty-four patients) and the prevalence of osseous deformity was 26% (six of twenty-three patients). A strong association was noted between shoulder contracture and osseous deformity (p = 0.004). Directly after birth, the presence of a clavicular fracture was the only factor that was associated (p = 0.016) with the development of an osseous deformity (but not with a shoulder contracture). At a later stage, speed and extent of neurological recovery were related to shoulder contracture and osseous deformity. An asymmetric appearance was noticed in children who had a contracture, including those who had complete neurological recovery. CONCLUSIONS: The prevalence of shoulder contracture and osseous deformity in children with obstetrical brachial plexus injury was high, even in those with complete neurological recovery. These complications were strongly associated with one another. No symptom that appeared immediately after birth was identified as a factor that would predict the development of future shoulder contracture. A clavicular fracture was found to be significantly associated with the development of an osseous deformity at a later stage.

Birth Injuries↗