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At least 235 records · Page 13Linked to original sources
PubMed1992

[Only limited effect of treatment of thyroid gland diseases on symptoms of musculoskeletal system].

In order to assess the long term effect of treatment for thyroid dysfunction on musculoskeletal symptoms, 102 patients were traced by a computer search; these patients visited two outpatient clinics of rheumatology and were known to have thyroid disorders. Of these 102 patients, 58 patients met the study criteria of having abnormal thyroid function tests at first visit to the outpatient clinic; 46 patients participated in the study. They were interviewed with a structured questionnaire about their past and current musculoskeletal complaints. The 46 patients (45 females, 1 male) had a mean age at interview of 58 years (range 21-81); 37 and 9 patients had been treated for hypothyroidism and hyperthyroidism respectively. The thyroid dysfunction was considered the only explanation of the original musculoskeletal symptoms in 24 patients (group I), in 19 patients an additional (rheumatological) diagnosis was made (group II), and in 3 patients no apparent relation between musculoskeletal complaints and thyroid dysfunction was found. After treatment for thyroid dysfunction the original complaints decreased in 52% and 47% of the patients in group I and II, respectively. At the time of the follow-up study (mean follow-up duration 67 months) 91% of the patients had musculoskeletal symptoms, 80% of the patients said their present complaints were similar to their original symptoms. Treatment for thyroid dysfunction resulted in a temporary beneficial effect on musculoskeletal symptoms in 50% of the patients; in 91% symptoms persisted.

Adult↗
PubMed2006

A global optimization method for prediction of muscle forces of human musculoskeletal system.

Inverse dynamic optimization is a popular method for predicting muscle and joint reaction forces within human musculoskeletal joints. However, the traditional formulation of the optimization method does not include the joint reaction moment in the moment equilibrium equation, potentially violating the equilibrium conditions of the joint. Consequently, the predicted muscle and joint reaction forces are coordinate system-dependent. This paper presents an improved optimization method for the prediction of muscle forces and joint reaction forces. In this method, the location of the rotation center of the joint is used as an optimization variable, and the moment equilibrium equation is formulated with respect to the joint rotation center to represent an accurate moment constraint condition. The predicted muscle and joint reaction forces are independent of the joint coordinate system. The new optimization method was used to predict muscle forces of an elbow joint. The results demonstrated that the joint rotation center location varied with applied loading conditions. The predicted muscle and joint reaction forces were different from those predicted by using the traditional optimization method. The results further demonstrated that the improved optimization method converged to a minimum for the objective function that is smaller than that reached by using the traditional optimization method. Therefore, the joint rotation center location should be involved as a variable in an inverse dynamic optimization method for predicting muscle and joint reaction forces within human musculoskeletal joints.

Biomechanical Phenomena↗
PubMed1991

Gadopentetate dimeglumine-enhanced MR imaging of the musculoskeletal system.

Contrast-enhanced MR imaging with gadopentetate dimeglumine has been used in the evaluation of musculoskeletal disorders only in recent years, and for the most part it is still under investigation. Review of the literature identified potential uses for this technique: (1) in the spine, for differentiation between scar tissue and recurrent disk herniation and for evaluation of epidural tumors; (2) in musculoskeletal tumors, for differentiation between tumor necrosis and peritumoral edema and for characterization and evaluation of tumors before and after treatment; (3) in the joints for delineation of cartilage and tendon tears, with intraarticular injection, and for differentiation between pannus and joint effusion, with IV injection; and (4) for delineation of infectious processes. Further studies are needed to confirm most of these potential indications. It is unlikely that gadopentetate dimeglumine-enhanced MR imaging will become a routine part of musculoskeletal MR imaging, and its use will be reserved for specific circumstances.

Bone Diseases↗
PubMed1994

Recent advances in magnetic resonance imaging of the musculoskeletal system.

Numerous recent technical innovations in magnetic resonance imaging have dramatically improved the imaging evaluation of musculoskeletal disease; however, with the introduction of new techniques comes the risk of inappropriate applications and unanticipated pitfalls in interpretation. Some of the practical and theoretical implications of these recent innovations as well as potential caveats associated with their use are highlighted in the following discussion.

Cartilage, Articular↗
PubMed1994

MR imaging of the musculoskeletal system: technical considerations for enhancing image quality and diagnostic yield.

MR imaging has revolutionized the diagnostic evaluation of musculoskeletal disorders, becoming the study of choice for many indications. Without the use of ionizing radiation, MR imaging can safely produce high-contrast, high-resolution cross-sectional images of the body in virtually any imaging plane. To maximize the diagnostic information of musculoskeletal MR studies, the radiologist must consistently produce the highest quality images possible, which in turn depends on a complex interaction among multiple technical factors. We present our perspectives on some of these factors, stressing the impact each has for specific indications. The material presented herein should be viewed as guidelines for improving image quality and diagnostic yield. However, individual systems and applications vary considerably, and the radiologist must "fine-tune" protocols to reflect the available resources, patient population, and preferences of the referring clinicians.

Adipose Tissue↗
PubMed2003

Symptoms and clinical findings from the musculoskeletal system among operators at a call centre in Sweden--a 10-month follow-up study.

The musculoskeletal health among 57 operators at 1 call centre in Sweden was studied with 10 monthly follow-ups, parallel to a reference group of 1,226 professional computer users in other occupations. Operators at this call centre were more symptom-loaded than the other professional computer users in spite of their younger age and shorter exposure to computer work. Symptoms were long-lasting or recurrent. Muscle tenderness and nerve affections in the neck-shoulder region were the most common specific findings and diagnoses at medical examination of incident symptom cases. More extensive studies should be done on the working conditions and health status among call centre workers.

Adult↗
PubMed1994

[Missed injuries of the musculoskeletal system in multiple trauma--a retrospective study].

In order to quantify frequency, localisation and consequences of missed musculoskeletal injuries in multiple injured patients, 323 cases were retrospectively analyzed. 40 primarily missed injuries were found, 12 of them in patients, who had been transferred from another hospital. This rate of 12.4% corresponds with the literature. Four regions are mainly affected: 1. the cervical spine, especially the cervicothoracic transition, 2. the shoulder, 3. the ligaments of the knee especially with femur or tibia fractures at the same time, and 4. the forefoot. About half of the primary missed injuries are ligament lesions. Whereas spine injuries were diagnosed within the first 2 weeks (average 4 days), ligament injuries (average 28 days) and foot injuries (average 38 days) were discovered at the patient's mobilization phase. Reasons for non detecting the injuries are: Missing or inadequate x-rays, not consistently continued diagnostic steps, inaccurate or not repeated clinical examination, apparent insignificance of peripheral injuries in multiple trauma. The potential danger of neurologic deficits of vertebral fractures, delay of rehabilitation due to secondary correction surgery (e.g. secondary ligament reconstructions) and imminent permanent damage (e.g. posttraumatic foot deformities) show the importance of a quick diagnosis of all injuries, even those appearing at the first glance as unimportant.

Diagnostic Errors↗