Time to return to work and surgeons' recommendations after carpal tunnel release

BACKGROUND: Time to return to work after carpal tunnel release is extremely variable suggesting that only a small proportion of total sick-leave is for medical reasons. AIMS: To determine factors predicting a delayed return to work. METHODS: Fifty consecutive employed patients undergoing carpal tunnel surgery were tested pre-operatively, and then at 1 month post-operatively using both questionnaires and objective testing. Further follow-up by telephone was carried out every 2 weeks up until 90 days. RESULTS: Forty-nine of the 50 workers had returned to work by 3 months. Time to return to work was extremely variable ranging from 1 to 88 days in those who returned to work. Post-operative recommendations by the surgeon also varied widely from 1 to 36 days. The surgeons' recommendations were the strongest predictors of delayed return to work [odds ratio 30.5; 95% confidence interval (CI), 3.2-288], with physical work (odds ratio 27.7; 95% CI, 1.5-507) and lack of self-rated health (odds ratio 5.0; 95% CI, 1.11-100) adding significantly to the logistic regression model, which was highly predictive (area under the receiver-operator curve of 88%). Patient symptoms and objective findings of disability did not add significantly to a logistic regression model either predicting return to work or the surgeon's recommendations. CONCLUSIONS: Our study suggests that workers will return to work in less than 3 weeks if recommended by the surgeon. A randomized controlled trial is warranted to determine if a higher proportion of workers returning in less than 3 weeks can be obtained by standardizing surgeons' recommendations.     

Predictors of return to work following carpal tunnel release

Little is known about factors that predict return to work following carpal tunnel release. Patients enrolled in a prospective, community-based study of carpal tunnel syndrome in Maine were evaluated with standardized questionnaires preoperatively and 6 months following carpal tunnel release. Univariate and multivariate analyses were performed to identify baseline factors associated with work disability 6 months following surgery. Thirty-one of 135 patients (23%) were out of work because of CTS 6 months following surgery. The predominant preoperative variables associated with work absence due to CTS 6 months postoperatively in logistic regression analyses were Workers' Compensation, work absence preoperatively, and worse mental health status (p ≤ 0.01 for each). In analyses that considered postoperative as well as preoperative variables, persistence of symptoms following surgery was the most striking predictor of failure to return to work due to CTS (p < 0.0001). Preoperative correlates of less complete relief of symptoms in multivariate models included involvement of an attorney, milder preoperative symptom severity, preoperative work absence (p < 0.005 for each) and exposure to hand intensive work (p = 0.04). These data indicate that economic and psychosocial variables have a strong influence upon both return to work and the extent of symptom relief 6 months following surgery for carpal tunnel syndrome. Am. J. Ind. Med. 31:85–91 © 1997 Wiley-Liss, Inc.     

Comparison of outcomes of untreated carpal tunnel syndrome and asymptomatic controls in meat packers

Our objectives were to determine the reporting of symptoms, the medical outcome and the work status of meat plant workers diagnosed with clinical carpal tunnel syndrome (CTS). Forty-seven cases of CTS were identified from a previously reported study, and were matched by age, gender and hand use. Cases and controls were followed up for 24 months. The Provincial Workers' Compensation Board and company health records were used to determine the reporting of symptoms, interventions and work status. Thirty-one study cases and all control cases were followed for the full 24 months (16 study cases were lost to follow-up). In total, 12 cases reported symptoms of CTS during the 24 months (eight study cases and four controls). Of the eight study cases, one required surgical release of the carpal tunnel. After a period of work modification, five of the eight study cases returned to regular duty and the remainder were placed on permanent job restrictions. Of the four controls, one subject had a surgical release and returned to regular work, two subjects' jobs were permanently modified, and the fourth returned to regular duty. Occupation-related CTS in meat packers appears to be transient and responsive to conservative measures, with a surgical rate comparable to other occupations.     

Determinants of work absence following surgery for carpal tunnel syndrome

BACKGROUND: The objective was to identify factors across multiple domains associated with return to work in a community-based cohort of workers with carpal tunnel syndrome. METHODS: Workers scheduled for carpal tunnel release were recruited into this prospective study. Subjects completed questionnaires preoperatively and at 2, 6, and 12 months postoperatively. The questionnaires contained demographic, clinical, and psychosocial factors and physical and psychosocial workplace stressors. Predictors of work absence at 6 and 12 months were examined in bivariate and multivariate logistic regression analyses. RESULTS: Six months following surgery of 181 subjects, 29 (19%) were out of work. Twelve months postoperatively 33 subjects (22%) were out of work. In bivariate analyses, the factors associated with work absence at 6 months, at P < or = 0.01, included preoperative physical functional status, change in self-efficacy between preoperative assessment and 2 months, lower income, workers' compensation, representation by an attorney, work exposure to force and repetition, higher psychological job demands and lower control, lower social support by coworkers, lower job security and more supportive organizational policies and practices. The factors associated with work absence at 12 months in bivariate analyses included preoperative physical functional status, lower self-efficacy at 2 months, workers' compensation, and less supportive organizational policies and practices. Multivariate analyses documented a multidimensional model, with predictors from multiple domains. CONCLUSIONS: Clinical, demographic, economic, and workplace factors were associated with work absence. Strategies to reduce work absence following carpal tunnel release should address multiple dimensions of the worker and workplace.     

A study of factors influencing return to work after wrist or ankle fractures

BACKGROUND: Factors associated with time to return to work are poorly understood for occupational injuries, other than those to the back. METHODS: Anonymized data on claims for work-related wrist or ankle fracture between 1/1/1998 and 12/31/2002 were identified in administrative data held by the Workers Compensation Board in Alberta, Canada. Bivariate and Cox regression analyses were used to identify factors associated with return to work. RESULTS: Increased duration of temporary disability (TD) was associated with older age, female gender, work in construction and construction trade services, smaller company size, higher industry claim rates, a fall/jump from a height, ankle fracture, and greater medical aid costs in the 30 days following injury (used as a proxy for severity). CONCLUSIONS: Factors associated with longer time off work were largely consistent with those reported following back injury. Median time to return to work was longer following ankle than wrist fracture. Although Workers' Compensation Board (WCB) administrative data provided information that could be used to identify factors affecting return to work, better information on injury severity would considerably enhance their research potential.     

Advice given to patients about return to work and driving following surgery

BACKGROUND: The post-operative advice given to patients by health care practitioners regarding return to work and return to driving may have an impact upon their absence duration. The only guidance that is readily available to assist health care practitioners give this advice is provided by the Department of Work and Pensions (DWP). AIMS: To identify what advice local consultant surgeons, occupational physicians and general practitioners give to patients about return to work and driving, following benign abdominal hysterectomy (BAH) and Birmingham hip resurfacing (BHR). To explore health care practitioners' awareness of the DWP evidence-based return to work guidelines. METHOD: A questionnaire was administered to 216 health care practitioners, asking them about the advice they would give to patients undergoing BAH or BHR, regarding return to driving and return to work. RESULTS: Fifty-eight per cent of all health care practitioners that responded were unaware of the DWP evidence-based guidance. Seventy-four per cent of occupational physicians were aware of this guidance but only 32% of general practitioners and 0% of hospital specialists. The advice given regarding expected duration of sickness absence was very variable, ranging between 2 weeks and >12 weeks for both BAH and BHR procedures. Twenty-one different operative 'patient information sheets' were examined and these included only very brief and very general advice about return to work. CONCLUSION: National guidance on post-operative return to work advice could be beneficial. The guidance should be supported by health care practitioners and provide advice about normal ranges of time to return to driving and to return to work.     

内镜下和双小切口手术方法治疗腕管综合征的疗效分析

目的：探讨内镜下腕管松解术和双小切口腕管松解术治疗腕管综合征的临床疗效和安全性差异。方法：将70例腕管综合征患者随机分为内镜下腕管松解术组（A组,35例）和双小切口腕管松解术组（B组,35例）,随访24个月,采用Kelly分级评定法评价比较两种手术的术后临床疗效和安全性差异。结果：A组优良率为91.4%,B组优良率为88.6%,两组的优良率比较差异无统计学意义（x2=0.328,P＞0.05）;A组的住院时间及术后恢复工作时间显著优于B组,差异有统计学意义（t=3.859,t=2.293;P＜0.05）。结论：双小切口腕管松解术及内镜下腕管松解术治疗腕管综合征均为有效的手术治疗方法,但内镜下腕管松解术的住院时间短、术后恢复更快。     

A retrospective study of return to work following surgery

BACKGROUND: Sickness absence following surgery accounts for significant periods of sickness absence from employment. The duration of absence following two surgical procedures: benign abdominal hysterectomy (BAH) and Birmingham hip resurfacing (BHR) was explored. AIM: To identify what advice patients who had undergone BAH or BHR surgery were given regarding their likely sickness absence duration and to compare this with their reported absence duration. METHOD: In all, 453 patients who had undergone BAH or BHR surgery during 2004 were contacted by postal questionnaire and the results were statistically analysed. RESULTS: The advice given to patients to refrain from work varied from 4 weeks to >15 weeks for BAH surgery which was inconsistent with evidence-based guidance provided by the Department of Work and Pensions. The advice for BHR varied from <4 weeks to >15 weeks. Advice given by health care professionals appeared to have the greatest influence on return to work times with patients tending to adhere to any advice that is given irrespective of its duration. Twenty-two (29%) BAH patients and thirty-six (43%) BHR patients reported that their employers provided temporary work modifications when they returned to work; however, this support appeared to have no effect on their sickness absence duration. CONCLUSION: Health care professional advice regarding expected sickness absence duration influenced absence duration. The awareness and use of more consistent evidence-based guidance may be beneficial for all involved in this process.     

Treating physicians' perceptions of barriers to return to work of their patients in Southern Ontario

AIMS: The aim of this paper is to understand the treating physician's perspective with respect to the barriers that their patients face returning to work from injury and illness. METHODS: The methodology used was focus groups conducted in Southern Ontario with treating physicians. RESULTS: The main barrier identified by the treating physicians in the return to work process was the lack of accommodated work. The main areas identified for the use of additional resources was facilitated investigations, assessments and treatments for their patients and education and training for treating physicians. With respect to communication, physicians indicated that they wanted to know more about the work to which their patients were returning. CONCLUSIONS: Treating physicians believe that the most significant barriers for the timely return to work for their patients exist in the workplace, specifically related to lack of knowledge about appropriate modified work. The treating physicians' role in the return to work process is demanding due to insufficient time to deal with return to work issues, lack of training, not enough of the appropriate information and the treating physicians' role ambiguity.     

The significance of work tasks for rehabilitation outcome after carpal tunnel surgery

Surgical treatment of carpal tunnel syndrome (CTS) is used over the world with reported good results. The long-term rehabilitation result in terms of postoperative difficulties in returning back to work after surgery, however, has not been carefully studied. Ninety-three consecutive patients under the age of 55 were followed up 2 years after they had carpal tunnel surgery. Thirty-eight patients had symptoms similar to the ones that caused the operation; 24 patients in the study had monotonous, repetitive jobs. Of those, there were 18 that still had symptoms in the operated hand and 12 were incapable of work, meaning they were on long-term sick leave or had early retirement pensions. This study indicates that further measures than surgery alone are needed to get some patients with CTS back to a long-term working life. This is most obvious in females who after carpal tunnel surgery, return to a job exposing them to repetitive, monotonous hand and arm movements.     

Carpal tunnel syndrome in the Turkish steel industry

Aim Certain occupations are reported to be associated with ahigh risk for carpal tunnel syndrome (CTS). In this study, weinvestigated the development of CTS in iron–steel industryworkers. Methods Subjects were recruited from a factory of 650 workersand assessed by means of history, physical examination and electrophysiologicaltesting. Results Seventy-nine subjects from the factory and 53 healthycontrols with occupations unrelated to heavy physical work wereassessed. None of the worker group had electrophysiologicalevidence of CTS. One subject in the control group has electrophysiologicalevidence of CTS. In the worker group, all sensory nerve conductionvelocities and ulnar nerve action potential amplitudes in bothhands and distal motor latencies were statistically different. Conclusions In our study, among a group of heavy labourers,no cases of CTS were detected. However, all electrophysiologicparameters of workers were different from controls. Our resultspoint to a diffuse, but subclinical injury of peripheral nervesunder heavy physical work conditions, instead of a local effectsuch as CTS.     

Return to work after ill-health retirement in Scottish NHS staff and teachers

BACKGROUND: Most major public and private sector pension schemes have provision for ill-health retirement (IHR) for those who become too ill to continue to work before their normal retirement age. AIM: To compare the causes, process and outcomes of IHR in teachers and National Health Service (NHS) staff in Scotland. METHODS: A total of 537 teachers and 863 NHS staff who retired due to ill-health between April 1998 and March 2000 were mailed an IHR questionnaire by the Scottish Public Pensions Agency. RESULTS: The response rate for teachers was 53% and for NHS staff 49%. The most common cause of IHR was musculoskeletal disorders for NHS staff and mental disorders for teachers. Teachers retired at a younger average age than NHS staff. Ninety-two per cent of NHS staff but only 11% of teachers attended occupational health services (OHS) prior to IHR. Eighteen per cent of NHS staff and 9% of teachers were offered part-time work by their current employer in response to their ill-health. Fifteen per cent of NHS staff and 5% of teachers were offered alternative work prior to retirement. Seventeen per cent of NHS staff and 36% of teachers subsequently found employment. Multiple logistic regression analyses showed the following variables as independent predictors of subsequent employment: occupational group, age group, sex, managerial responsibility and cause of IHR. CONCLUSIONS: Return to work after IHR suggests that some IHR could be avoided. Teachers had a higher rate of return to work and much less access to OHS.     

Pyridoxine hydrochloride treatment of carpal tunnel syndrome: a review

It has been hypothesized that idiopathic carpal tunnel syndrome (CTS) is a manifestation of vitamin B6 deficiency. Some claim that B6 supplementation can alleviate symptoms. Others argue that pain relief occurs because of vitamin B6's anti-nociceptive properties or because B6 supplementation addresses an unrecognized peripheral neuropathy. Few studies on CTS and B6 employed electrodiagnostic techniques in diagnosis, and few showed a correlation between symptoms and improved electrodiagnostic parameters with supplementation. Other studies failed to measure or estimate B6 levels. Nevertheless, it appears reasonable to recommend vitamin B6 supplementation to people with CTS. Some patients will improve symptomatically with low risks of toxicity in recommended doses.     

Cardiac rehabilitation and return to work after coronary artery bypass surgery

The work situation of 66 male patients who underwent elective coronary artery bypass surgery (CABS) and who had been randomly allocated to receive cardiac rehabilitation (group R) was compared with the work situation of 59 similar patients allocated to receive only standard care (group H). The follow-up time was one year. The proportions of subjects working in groups R and H were 26% and 20% (p=ns) before the CABS, 45% and 34% (p=ns) 6 months and 56% and 38% (p=ns) 12 months after the CABS, repectively. The increase in proportion of subjects who worked was significant in both groups at both 6 and 12 months after the CABS (p<0.05 for all changes). The increases were not significantly different between the whole groups, but in patients younger than 55 years of age, return to work was more frequent in group R than in group H (at 12 months 60% vs. 35%, p for the difference in change=0.02). Stepwise logistic regression analysis of the factors influencing return to work showed that a patient's judgement of his own working capacity as good 6 months after CABS (odds ratio (OR) 8.5, confidence interval (CI) 2.3–32.0), functional class 16 months after the CABS (OR 6.7, CI 1.8–24.5), his desire to work (OR 6.4, CI 1.6–26.0) and absence from work of less than 3 months before the CABS (OR 4.9, CI 1.2–20.2) were significant positive predictors of return to work 1 year after the CABS.     

Early predictors of chronic work disability associated with carpal tunnel syndrome: a longitudinal workers' compensation cohort study

BACKGROUND: The study objectives were to identify early predictors of chronic work disability associated with carpal tunnel syndrome (CTS) and to test the hypothesis that variables from each of several domains (sociodemographic, clinical, work-related, and psychosocial) would add unique predictive information. METHODS: Washington State workers were interviewed 18 days (median) after submitting a new workers' compensation claim for CTS. Baseline predictors of chronic work disability (> or =180 days of work disability compensation in the year after claim submission) were examined for workers who had at least 1 day of disability compensation (N = 899). RESULTS: Baseline demographic variables, symptom severity, functional limitations, lack of job accommodation, job physical demands, job psychosocial conditions, and worker psychosocial characteristics predicted chronic disability bivariately. Each domain of variables added significantly to the prediction of chronic disability. The final multivariable model had fair ability to discriminate individuals with versus without chronic disability (cross-validated area under the ROC curve = 0.76). CONCLUSIONS: Sociodemographic, clinical, work-related, and worker psychosocial factors early in a claim contribute unique information to the prediction of subsequent work disability associated with CTS.     

Biographical work and returning to employment following a spinal cord injury

The question of returning to work after the onset of severe impairment is inseparable from the biographical work that disabled people need to achieve. Qualitative analysis of interviews I carried out among people who had become paraplegic and among rehabilitation professionals offered the following insights: * During a period extending beyond rehabilitation, interviewees were absorbed by the work of coming to terms with their impairment and delegated the question of occupation to the professionals. At a later date, some of them manage to recast their biographies and gain ownership of their occupations and activities for themselves. An open environment, which offers negotiable opportunities and space for relationships to form, encourages the development of biographical work. Nowadays, the question of exclusion would appear to dominate the domain of rehabilitation. The belief that prolonged inactivity engenders marginalisation has led professionals to develop a doctrine whereby they encourage their patients to plan for their professional activities from a very early stage. Struggling with different time demands (for example, lengthy administrative procedures and reduced rehabilitation time) professionals organise their work around a new time frame which conflicts with their expertise and is difficult to reconcile with the trajectories of disabled people.     

Course of symptoms and median nerve conduction values in workers performing repetitive jobs at risk for carpal tunnel syndrome

BACKGROUND: Carpal tunnel syndrome (CTS) is a common occupational disorder associated with repetitive manual work. Little information exists about the possible relation between the variation of biomechanical hand/wrist exposure and the development of symptoms and median nerve conduction values. AIMS: To investigate the prevalence of CTS in a group of workers exposed to intensive use of the hands and the course of symptoms and median nerve conduction values after a period of reduced exposure to biomechanical risk factors. METHODS: CTS was assessed in assembly and non-assembly line workers by means of clinical examinations and nerve conduction studies (NCS). Ergonomic analysis was conducted for each assembly line workstation. RESULTS: Prevalence of CTS was significantly higher in assembly line workers compared to non-assembly line workers but there was a high prevalence of median nerve conduction abnormalities in both groups (60/102 hands and 40/110 hands, respectively). In a sizable proportion of both groups there was no relationship between symptoms and electrodiagnostic findings (45 hands and 48 hands in assembly and non-assembly line workers, respectively). When assembly line workers were re-examined after 2 years following a period of reduced work schedule, a significant proportion reported resolution of symptoms or had reverted to having normal NCS. CONCLUSIONS: In our study, repetitive work was associated with a higher level of CTS and abnormal NCS. These findings appeared to be reversible following a period of less repetitive work. Overall, there was generally poor correlation between symptoms and electrodiagnostic findings.