Humans ; Rotation ; Tennis Elbow ; therapy ; Traction ; methods

Treatment options for impacted permanent molars include orthodontic traction, surgical repositioning, transplantation, and extraction of the impacted teeth. Orthodontic traction is recommended because it is the most conservative method. However, it has limitations, such as loss of tooth anchorage. In an effort to overcome these limitations, skeletal anchorage devices tailored for orthodontic use were developed. In this case report, 3 patients were diagnosed with impacted permanent molars. The impacted teeth of these patients were surgically exposed, the orthodontic devices were attached, and the skeletal anchorage devices were implanted for the successful traction of the impacted teeth.
Humans ; Methods ; Molar ; Tooth ; Tooth, Impacted ; Traction

OBJECTIVETo investigate the influences of varying lingual traction forces on the space-closing speed in a typodont model.

METHODSForty-two Angle Class I standard typodont models of bimaxillary teeth protrusion were divided into 7 equal groups. Four regions of the model were paired to groups, and in the odd-numbered models, the top left and bottom left regions served as the experimental group and the top right and bottom right regions as the control group; in the even-numbered models, the regions in the model were grouped oppositely. In the experimental group, the space was closed by niti wire extension spring in the buccal ridge combined with lingual elastic traction of 0, 5, 10, 15, 20, 25 and 30 g. In the control group, the space was closed by exclusive niti wire extension spring in the buccal ridge. The space-closing speed were analyzed in all the groups.

RESULTSThe space-closing speed was significantly lower in the control group than in the experimental groups with lingual traction forces of 5, 10, 15, 20 and 25 g (P<0.05), but a traction force of 30 g resulted in a significantly lower speed than that in the control group (P<0.05). The space closing speed was the greatest in the experimental group with a traction force of 15 g (P<0.05).

CONCLUSIONNiti wire extension spring in the buccal ridge combined with lingual elastic traction results in faster space-closing speed than traditional exclusive niti wire extension spring. The speed is the fastest by applying 15 g lingual traction, which is also associated with the lowest slip resistance.

Dental Models ; Dental Stress Analysis ; Tooth Extraction ; methods ; Traction

Adult ; Female ; Humans ; Male ; Scoliosis ; therapy ; Traction ; methods

Colorectal endoscopic submucosal dissection (ESD) is now a well-established endoscopic treatment for early-stage colorectal neoplasms, especially in Asian countries, including Japan. Despite the spread of colorectal ESD, there are still situations in which achieving successful submucosal dissection is difficult. Various novel techniques and devices have been developed to overcome these difficulties, and past reports have shown that some of these strategies can be applied to colorectal ESD. We review several recent developments in the field. The techniques reviewed include the pocket creation method and traction methods and the devices reviewed include the overtube with balloon and electrosurgical knives with water-jet function. These improved techniques and devices can facilitate safer, more reliable ESDs and expand its applicability and acceptability all over the world.
Asian Continental Ancestry Group ; Colorectal Neoplasms ; Humans ; Japan ; Methods ; Traction

Elbow Joint ; surgery ; Humans ; Tennis Elbow ; surgery ; Traction ; methods

OBJECTIVE: Many lumbosacral fixation techniques have been described to offer a more screw-bone purchase. The forward anatomical fixation parallel to the endplate is still the most preferred method. Literature revealed little knowledge regarding the mechanical stability of lumbosacral trans-endplate fixation compared to the traditional trans-pedicular screw fixation method. The aim of this study is to assess the pull-out strength of lumbosacral screws penetrating the end plate and comparing it to the conventional trans-pedicular screw insertion method.METHODS: Eight lumbar and eight sacral vertebrae, with average age 69.4 years, Left pedicles of the 5th lumbar vertebrae were used for trans-endplate screw fixation, group 1A, right pedicles were used for anatomical trans-pedicular screw fixation, group 1B. In the sacral vertebrae, the right side S1 pedicles were used for trans-endplate fixation, group 2A, left side pedicles were used for anatomical trans-pedicular screw fixation, group 2B. The biomechanical tests were performed using the axial compression testing machine. All tests were applied using 2 mm/min traction speed.RESULTS: The average pull-out strength values of groups 1A and 1B were 403.78±11.71 N and 306.26±17.55 N, respectively. A statistical significance was detected with p=0.012. The average pull-out strength values of groups 2A and 2B were 388.73±17.03 N and 299.84±17.52 N, respectively. A statistical significance was detected with p=0.012.CONCLUSION: The trans-endplate lumbosacral fixation method is a trustable fixation method with a stronger screw-bone purchase and offer a good alternative for surgeons specially in patients with osteoporosis.
Humans ; Lumbar Vertebrae ; Methods ; Osteoporosis ; Spine ; Surgeons ; Traction

Sprengels deformity is a relatively uncommon congenital deformity. Since first described by Eulenberg in 1863, many authors have reported this abnormal condition and many surgical approaches have been devised. In this case, an eight year old boy had a relatively marked deformity with motion limitation of the Lt. shoulder joint especially abduction. Surgical correction was performed by the Green method in which method in which sevral muscles were dissected from the scapula extraperiosteally, the supraspinous part of the scapula was resected along with its periostem, one omovertebral bone which articulated between the superomedial angle of the scapula and the Tl transverse process was excised, the scapula was moved down by wire traction to a normal position. Postoperative results were relatively good cosmetically and functional improvement was achieved.
Congenital Abnormalities ; Humans ; Male ; Methods ; Muscles ; Scapula ; Shoulder Joint ; Traction

The beneficial effect of the longitudinal traction-either halo-femoral or halo-pelvic and the anterior spinal fusion in some spinal disorders is well documented. This paper is a report of a patient who is suffering from spine tuberculosis with severe kyphosis and incomplete paraplegia. He was treated satisfactorily by applying a Crutchfield tong-femoral traction for four weeks followed by anterior spinal fusion. It is authors concept that the early cases of the active spine tuber-culosis with advancing kyphosis can be effectively treated by using the above mentioned method without introducing more complicated combination of the spinal osteotomy, halo-pelvic distraction and spinal fusion.
Humans ; Kyphosis ; Methods ; Osteotomy ; Paraplegia ; Spinal Fusion ; Spine ; Traction ; Tuberculosis

OBJECTIVECorrection of craniofacial dysostosis with midface distraction osteotogenesis.

METHODSLe Fort III osteotomy has been employed through coronal route on patients with midface craniofacial dysostosis such as Crouzon and Apert syndrome. Then a REDII distraction device was set up, and the device bars directed. The distraction begins 6.4 days after the surgery, with a rate of 1 mm per day. When midface approaching the right position, i.e. an slightly over correction of occlusion is reached, the distraction stops and the device is held for the next 2-4 months.

RESULTSThere are 8 cases completed all the therapy with an average age of 11.9 years old. The midface had been moved averagely 9.7 mm forwards and 1.6 mm downwards. The features had been improved obviously and the occlusions reach nearly normal. The exophthalmos reduced from 20.3 mm to 11.9 mm. In cephalometry, SNA was averagely enlarged 9 degrees, and ANB enlarged 8.8 degrees. The snore during sleeping was also improved in 87.5% cases. No serious complication had occurred except minor one such as 1 case of seroma and 1 case of infection around pin on scalp. According to 5 months averagely follow-up, there is no recurrence in our list.

CONCLUSIONSMidface distraction osteotogenesis is propitious to teenage or severe cases of craniofacial dysostosis.

Adolescent ; Child ; Craniofacial Dysostosis ; surgery ; Face ; surgery ; Female ; Humans ; Male ; Osteogenesis, Distraction ; methods ; Traction ; methods