The Improvement And Retrospective Analysis Of The Elastic Traction Frame

Objective：To design a set of elastic traction frame with reasonable structure, simple operation,good treatment effect for the treatment of idiopathic scoliosis and evaluate its tractioneffect.Methods：The study is divided into two parts:The first part: on the basis of traditional design of the Halo traction frame andimproved design of past Halo-pelvic traction ring designed by department of spinalsurgery of University of South China, this study combined respective advantagesand avoided disadvantages aiming for designing a traction ring with better flexibility,more-lightweight titanium alloy and a set of instruments for patients with idiopathicscoliosis in accordance with the ergonomic design specifications and humane basicrequirements.The second part: The elastic traction frame design used in clinical traction to measurethe height and weight of each patient, stretch in vitro a straight line to the fixed pointof the skull and iliac fixed point, pull of patients by1cm-2cm daily, and observepatients with neurological complications. The object of treatment of15cases ofidiopathic scoliosis patients,15patients,6males and9females (age from10to20years, mean at14.5years); idiopathic scoliosis (AIS),15cases; admission coronarybit of scoliosis Cobb angle of71°-110°with an average of97.33°±10.51°, sagittalkyphosis Cobb angle of46°-88°with an average of75.00±15.07°, traction therapywent by stages. Height, scoliosis Cobb angle, kyphosis Cobb angle data werecollected for statistical analysis to compare the efficacy of traction.Results:1.To design a set of elastic traction frame skull ring with original metal Gearingdesign plus elastic titanium alloy by elastic adjusting means, the adjusting nut on the apparatus can be adjusted up and down to control the size of the traction below thefixed point of two Schanz screws.2. According to different height and design in patients with different elastic tractionframe, patients with various stages of traction can be adjusted in the traction of stretch.By adjusting the size of the forces, the patients could reach retractive. According tothe size of the traction force, the orthopedic patients need to prevent neurologicalcomplications. The study is to design elastic traction frame for15cases of idiopathicscoliosis patients. This group of15patients had preoperative traction preparationtime12-20d(average15.5d) and preoperative elastic traction Traction scoliosis66.73°±6.28°(52°-76°), correction rate at31.14%±5.18%(22.5%-44.1%),kyphosis Cobb angle of58.47°±12.69°(34°-70°), correction rate of22.18%±4.4%(16.7%-32.0%); anterior release the scoliosis48.40°±5.14°(39°-56°), thecorrection rate was49.74%±6.23%(42.9%-60.9%), kyphosis45.07°±10.07°(25°-54°), correction rate of39.99±5.14%(33.3%-50.0%); increased average heightduring traction4.97cm±1.09cm (3.4cm-7.3cm). Traction and release height, Cobbangle of scoliosis, kyphosis Cobb angle show significant differences (P <0.05)between scoliosis and kyphosis correction rate in traction and release (P <0.05).Conclusion:Verified by clinical effect the elastic traction frame aims to achieve a reasonable andsimple structure, easy to operate, elastic traction, effective scoliosis traction release,complications, fewer complications. The results were satisfactory in avoiding theoccurrence of neurological complications. By using clinical promotion Spine traction.