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Results for “Torsion Abnormality”

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At least 19 recordsLinked to original sources
PubMed1996

Decision matrix analysis for tonic ocular torsional abnormalities with posturography abnormalities.

Tonic ocular torsions can arise from a variety of central or peripheral, vestibular, and nonvestibular lesions. However, the role of tonic ocular torsions in neurotology has been limited to surgical patients after unilateral vestibular deafferentation. By using 12 patients with a spectrum of well-defined unilateral peripheral vestibular lesions confirmed by electronystagmography (ENG), we identified a link between ipsiversive tonic ocular torsion compensation and vestibulospinal compensation, as measured by computerized dynamic posturography. In the context of ENG findings and posturography, the differential diagnosis of ocular torsions may be localized to the otoliths by using a decision matrix. Specifically, conditions of absent vision and sway-referenced support on computerized dynamic posturography associated with concurrent static ocular torsional abnormalities may suggest an otolith disorder. Furthermore, static ocular torsion assessment provides another important window on central vestibular compensation.

Adult↗
PubMed1994

Normal and abnormal torsional development in children.

This study presents findings in a series of 123 children with intoeing gait. The intoeing was caused by increased femoral anteversion (IFA) in 70% of the cases, and internal tibial torsion (ITT) in 30%. Rotation of the hips, thigh-foot angle, Q-angle, and computed tomography measured anteversion and tibial torsion divided the two groups very clearly. In the IFA group, 40.3% of the patients presented with an externally rotated tibia and 59.7% had an internally rotated tibia. In the ITT group, the anteversion was normal for age and the tibial torsion was significantly decreased. Eighty children who corrected their intoeing gait, and of whom 83.4% had IFA, were also reviewed: a decrease in anteversion was observed in 20.5% of the patients; 62.9% showed no decrease in anteversion.

Adolescent↗
PubMed2003

[Treatment of torsion abnormalities of central upper incisors caused by super-compact teeth].

A super-compact retained tooth is often responsible for rotation of a tooth round its axis; the retained tooth should be removed after preliminary x-ray examination of the site of abnormality. A great variety of etiopathological factors are responsible for the abnormality, and hence, the approaches to the choice of treatment are numerous. Rotation of teeth during orthodontic treatment involved stretching and strain of connective tissue fibers, which are not intended for rearrangement, and therefore the results are not stable. A long period of retention is needed for adaptation of tissues to a new position of the tooth.

Child↗
PubMed1990

Unilateral testicular torsion: abnormal histological findings in the contralateral testis--cause or effect?

A histological review of testicular biopsies of the contralateral testis, obtained at the time of surgical intervention for testicular torsion, was performed in 20 post-pubertal men. Contralateral histological abnormalities were found in 12 specimens. The duration of torsion correlated well with the viability of the involved testis but not with the presence of contralateral abnormalities. The high incidence of contralateral histological abnormalities and their nature suggest that they existed prior to the torsion since they would be unlikely to appear at such an early stage. We believe that some patients who suffer testicular torsion probably have congenital anomalies of both testes. These abnormalities involve testicular parenchyma as well as the suspension system.

Adolescent↗
PubMed1998

[Torsional abnormalities and length discrepancies after intramedullary nailing for femoral and tibial diaphyseal fracture. Computerized tomography evaluation of 189 fractures].

PURPOSE OF THE STUDY: We retrospectively determined by computed tomography torsionnal abnormalities and length discrepancies after diaphyseal tibial and femoral fractures treated by intramedullary nailing. MATERIAL: Eighty femoral fractures and 89 tibial fractures were evaluated after healing. All these patients were treated by Grosse-Kempf intramedullary locked nail. AO classification was used: there were 16 type A, 32 type B and 32 type C, femoral fractures. Tibial fractures were 48 type A, 29 type B, and 12 type C. Reaming was systematic, 90 per cent of the nailing were static. METHODS: We measured comparatively length and torsion of tibias and femurs after bone healing and tried to find statistical correlation between clinical, epidemiological, anatomical factors and CT measurements. RESULTS: For the femur the mean difference in torsion was 9.9 degrees (max. -21 degrees min. +45 degrees) 52.5 per cent had the same measurements in intact and fractured side. For tibias the mean torsionnal value was 6.84 degrees. Seventy three per cent of patients had the same torsion in intact and fractured side. The mean femoral length discrepancy was 6.3 mm (max. -25 mm min. +19 mm) and 4.1 mm (max. -19, min. 20 mm) for the tibia. There were no statistical correlation. DISCUSSION: Even though there is no clinical sign after torsionnal abnormalities in our patients, hip, knee or ankle arthrosis is possible after nailed shaft fracture. A long term follow-up is necessary. A prospective study will be necessary in order to assess the exact frequency of these malalignements.

Adolescent↗
PubMed1994

The association between tibial torsion and knee joint pathology.

To study the association of tibial torsion with knee joint pathology, measurements have been made using a simple tropometer suitable for use in an outpatient clinic. Patient measurements in 11 diagnostic groups were compared with a control group. Two groups differed significantly from the controls. Those patients with patellofemoral instability had greater than normal external tibial torsion, whereas patients with pan-articular osteoarthrosis of the knee had reduced external torsion or true internal torsion. Abnormal torsion causes a gait adaptation, thus affecting external loading on the knee joint, which in turn may lead to osteoarthrosis.

Adult↗
PubMed1996

Abnormalities of torsional fast phase eye movements in unilateral rostral midbrain disease.

In a patient with a unilateral rostral midbrain lesion, three-dimensional scleral search coil eye movement recordings demonstrated slowing of ipsidirectional torsional fast phase eye movements without any abnormalities of torsional slow phases. On high-resolution MRI, the brainstem lesion localized to the area of the efferent pathways from the rostral interstitial nucleus of the medial longitudinal fasciculus (riMLF). This supports the experimental finding that unilateral inactivation of the riMLF results in a loss of ipsidirectional torsional fast phase eye movements and the hypothesis that there is lateralization of function throughout the torsional fast eye movement generating system.

Adult↗