Biomedical subjects

Mats Hagberg

Publications and source records attributed to Mats Hagberg.

21 records · Page 2Linked to original sources

PubMed2002

Comparison of measurement accuracy between two wrist goniometer systems during pronation and supination.

Pronation and supination have been shown to affect wrist goniometer measurement accuracy. The purpose of this study was to compare differences in measurement accuracy between a commonly used biaxial, single transducer wrist goniometer (System A) and a biaxial, two-transducer wrist goniometer (System B) over a wide range of pronation and supination (P/S) positions. Eight subjects moved their wrist between -40 and 40 degrees of flexion/extension (F/E) and -10 and 20 degrees of radial/ulnar (R/U) deviation in four different P/S positions: 90 degrees pronation; 45 degrees pronation; 0 degrees neutral and 45 degrees supination. System A was prone to more R/U crosstalk than System B and the amount of crosstalk was dependent on the P/S position. F/E crosstalk was present with both goniometer systems and was also shown to be dependent on P/S. When moving from pronation to supination, both systems experienced a similar extension offset error; however R/U offset errors were roughly equal in magnitude but opposite in direction. The calibration position will affect wrist angle measurements and the magnitude and direction of measurement errors. To minimize offset errors, the goniometer systems should be calibrated in the P/S posture most likely to be encountered during measurement. Differences in goniometer design and application accounted for the performance differences.

Adult↗

PubMed2002

Rehabilitation of home care workers: supportive factors and obstacles prior to disability pension due to musculoskeletal disorders.

The aim of this study was to retrospectively explore the prevalence of rehabilitation actions, supportive factors, and obstacles for rehabilitation among home care workers with musculoskeletal disorders, especially focusing on aspects related to occupational rehabilitation. All home care workers in Sweden whose disability pension was approved in 1997 and 1998 because of a musculoskeletal disorder, were selected (n = 373). Data, covering aspects of the rehabilitation process and conditions in working life 5 and 15 years prior to their disability pension, were collected from a questionnaire. The majority considered that the disorder leading to a disability pension was caused by their work, but only one-third of them had their occupational disorder formally approved. Only one-third of the study group received occupational rehabilitation. However, an approved occupational disorder was related to higher prevalence of occupational rehabilitation. In the age group 60-65, few home care workers received rehabilitation. The majority perceived good support from their supervisor and working team, but no support with regard to lowering physical demands. Modification and reduction of physical demands might improve both sustained work ability in home care work and the outcome of the rehabilitation.

Adult↗

PubMed2002

Self-reported reduced productivity due to musculoskeletal symptoms: associations with workplace and individual factors among white-collar computer users.

The aim was to assess whether self-reported reduced productivity occurred in computer users due to musculoskeletal symptoms and the association to workplace, symptom, and individual factors. The study group consisted of 1283 computer users from different occupations, of whom 498 were men and 785 were women. Reduced productivity was self-assessed by two questions addressing if and how much productivity was reduced the previous month due to musculoskeletal symptoms. There were 63 women (8.0%) and 42 men (8.4%) of the total study group who reported reduced productivity due to musculoskeletal symptoms. The mean magnitude of the reduction was 15% for women and 13% for men. This outcome was weakly associated with computer mouse position and task and symptom persistence for both men and women. For women, work demands, computer problems, and being divorced/separated were also associated with reduced productivity. Although limited by problems of subjectivity of self-report and the possibility of significant underreporting, these results suggest that a variety of interventions may serve to decrease the impact of musculoskeletal disorders in the workplace.

Adult↗