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Biomedical subjects

M Hasue

Publications and source records attributed to M Hasue.

43 records · Page 3Linked to original sources
PubMedDate not supplied

A new method of quantitative measurement of abdominal and back muscle strength.

A new method of quantitative measurement with a cybex machine is applied to the trunk muscles. The curves of muscle torque and muscle fatigue are easily obtained in clinical medicine. In normal controls, maximal muscle torque is greater in back muscles than in abdominal muscles, and the definite influence of aging is found in both muscles. Furthermore, the trunk muscles are more easily fatigued by a sustained contraction than by repeated contractions, and abdominal muscles are more easily fatigued than back muscles. The role of the trunk muscles in the mechanism of pain production and prevention is still to be determined.

Abdominal Muscles↗
PubMedDate not supplied

Anatomic study of the interrelation between lumbosacral nerve roots and their surrounding tissues.

In order to clarify the mechanism of symptom production of sciatica or intermittent claudication, the interrelation between lumbosacral nerve roots and their surrounding tissues was analyzed in 75 cadavers. The running course of nerve roots can be changed by congenital anomalies and by acquired lesions, such as compression by articular facets. Ossification of spinal ligaments may also cause nerve root compression. The space around the nervous tissue, both in the spinal canal and in the intervertebral foramen, is narrower in the male than in the female. Membranous structures, an epidural membrane, and an epiradicular sheath can be found around nerve roots. Their existence is correlated with a serpentine figure of the roots observable by selective radiculography.

Adult↗
PubMedDate not supplied

Spondylolysis of the axis. Report of four cases.

Spondylolysis or spondylolisthesis of the cervical spine, especially of the upper cervical spine, is very rare. The authors report four cases of spondylolysis of the axis and outline its roentgenographic features for differential diagnosis. The clinical course of the cases and the unvarying roentgenographic findings throughout the course strongly suggest that the lesion is congenital in origin.

Adult↗
PubMedDate not supplied

Anatomic and clinical studies of radicular symptoms.

Anatomic studies using cadavers showed that three factors are responsible for radicular symptoms. The first is congenital or acquired abnormalities of nerves and nerve roots--the intradural segmental arrangement of rootlets, congenital anomalies of the nerve roots, and the furcal nerve. Another factor is changes of bone and soft tissue around nerves and nerve roots--indentation of nerve roots and extremely transverse courses of nerve roots. The third factor is a correlation of two other factors--spatial relationship of the nervous tissue to osseous and nonosseous elements of the spinal canal and the intervertebral foramen. In the intervertebral foramen, the nerve root is surrounded by a rather thick membranous structure, an epiradicular sheath, which is responsible for a tubular form obtained in nerve root infiltration. Anatomic abnormalities can be observed in contrast studies, but the defects revealed do not correspond necessarily with neurologic symptoms. In such cases, nerve root infiltration is very useful for a functional diagnosis. The analysis of radicular symptoms with nerve root infiltration showed that radicular pain and/or claudication are caused mainly by single nerve root involvement, irrespective of the findings obtained by contrast studies. Furthermore, therapeutic effect of nerve root infiltration can be expected in any disease and it can be applied as a final trial of conservative treatment.

Female↗
PubMedDate not supplied

Ischemic contracture in the lower limb.

Twenty cases of ischemic contracture in the lower limb demonstrate that the age distribution may be higher than that of patients with similar lesions in the upper limbs. Non-traumatic and traumatic causes are encountered equally frequently. Pain is one of the most important symptoms associated with long standing lesions. The ischemic lesion develops most frequently and severely in the anterior compartment of the leg. The functional prognosis is poor when both nerves are affected and when the deformity is severe.

Adolescent↗