OBJECTIVE Orthodontic mini-implants (OMI) generate various horizontal and vertical force vectors and moments according to their insertion positions. This study aimed to help select ideal biomechanics during maxillary incisor retraction by varying the length in the anterior retraction hook (ARH) and OMI position. METHODS Two extraction models were constructed to analyze the three-dimentional f...

[Purpose] The purpose of this study was to analyze changes in the electromyographic activities of the lumbar erector spinae caused by inversion traction in order to verify the relaxation effect. [Subjects and Methods] The subjects included 60 healthy male adults who were equally and randomly assigned to a 30-30° group, a 30-60° group, and a 60-60° group. Inversion traction was performed for six...

INTRODUCTION Traction alopecia is hair loss caused by prolonged or repetitive tension on the hair. Diagnostic challenges are encountered when the clinical suspicion is not high and when a history of traction is remote or not obtained. We have made the observation that the presence of retained hairs along the frontal and/or temporal rim, which we termed the "fringe sign," is a finding seen in bo...

OBJECTIVE We aimed to analyze the intracapsular pressure of the hip joint following femoral neck fracture and its relationship to the position of the hip or to traction and (using superselective arteriography) to evaluate the blood supply to the femoral head and the influence of traction and hip position on the blood supply. SUBJECTS AND METHODS Twenty-six cases of fresh Garden type I-III fem...

Electric railway traction chains (ERTCs) emerged at the end of the nineteenth century. Over the years, they have been consolidated as a better solution than their counterparts, i.e., the traction systems with generating power on board (e.g., diesel or steam-based systems). In terms of performances, ERTCs show the highest power-to-weight ratio, fastest acceleration and highest traction effort on...

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The efficacy and safety of 3 methods used in legal termination of pregnancy in the second and early third trimester was assessed in 258 women in Jordan randomly assigned to receive Foley catheter (with and without traction) or prostaglandin E2 vaginal tablets. The failure rate of termination and the total insertion-to-termination time was higher with Foley catheter without traction (16.5%, 16.5...

BACKGROUND Spinal flexibility is determined preoperatively by manipulating the spine and assessing, radiographically, to what extent the amount of deformity reduces. Quantifying spinal flexibility is important when determining the approach to the planned operation in order to achieve the most optimal spinal correction and balance. Currently, supine traction radiography is a popular method used ...

Vitreomacular traction and vitreomacular traction with macular hole are conditions associated with visual disturbance and decreased visual acuity. Recent studies have demonstrated that ocriplasmin is effective and safe in specific patient groups with vitreomacular traction, and hence is recommended as a treatment option. We present here a case report of a patient treated with intravitreal ocrip...

BACKGROUND Flexibility evaluation methods were only used to assess the changes of coronal Cobb angle in patients with adolescent idiopathic scoliosis (AIS). Little attention was attached to the vertebral rotation in these methods. MATERIAL AND METHODS 21 patients with severe adolescent idiopathic scoliosis were enrolled in this study. Coronal flexibility and rotation correction were compared on...