Background:The dislocated radial head in missed Monteggia fracture loses its concave articular surface and displays hypertrophic changes and flattened humeral capitellum configuration, thereby limiting the range of motion. We evaluated the results of open reduction in missed Monteggia fractures by various techniques.Materials and Methods:Sixty-three missed Monteggia fractures were included in the analysis. We performed four combinations of operation: Group I: 22 patients treated with modified Hirayama ulnar osteotomy plus annular ligament reconstruction with free Palmaris longus grafting; Group II:18 patients treated with modified Hirayama ulnar osteotomy plus annular ligament reconstruction by the Bell Tawse's procedure; Group III-9: patients treated with only modified Hirayama's osteotomy; and Group IV: 14 patients treated with transverse osteotomy of ulna and annular ligament reconstruction by the Bell Tawse's procedure. During followup these cases were assessed for the following parameters: 1) range of motion and 2) mayo elbow performance index (MEPI). Results were noted on follow ups at 3, 6, 12 months and then on yearly basis. Sixty-three patients were followed up for an average duration of 5.6 years (range 3-8 years).Results:The mean range of motion was increased by 45°, 30°, 45°, 20° for Group I, II, III and IV respectively. The average increase in MEPI scores was also almost on the same lines. There was one case of frank dislocation in group III and six cases of subluxation, two each in Groups II, III, and IV. For Annular ligament reconstruction, amongst two procedures, Groups II and IV (Bell Tawse group), had a significant extension lag contributing to the lower increase in the range of motion as compared to the Palmaris longus reconstruction group (group I).Conclusion:Hirayama's osteotomy is inherently more stable than the simple transverse osteotomy and it should be combined with annular ligament reconstruction. Palmaris longus graft for ligament reconstruction provides more stability as compare to Bell Towse's procedure.
Background:Though adequate literature is present depicting the results of pedicle screw-rod instrumentation using top loading systems for correction of adolescent idiopathic scoliosis (AIS), using the rod rotation technique, few published data is available regarding side loading systems used for a similar purpose. We report a retrospective study of a cohort of patients with strict inclusion criteria who underwent surgical correction of AIS with side-opening pedicle screw-rod posterior instrumentation using the axial translation technique of curve correction to assess the efficacy of side opening system for scoliosis correction with regards to patient satisfaction, Cobb's angle correction and spinal balance.Materials and Methods:Clinical and radiological outcomes were measured in 14 consecutive patients (3 males, 11 females) with an average age of 14.0 years (range 9 to 23 years). They were followed up for an average period of 13.0 months (range – 2.2 to 28.5). All patients underwent posterior instrumentation only with pedicle screws used as anchor points. Hybrid constructs using hooks/wires or curves requiring anterior release were excluded from the study. All levels were not instrumented – more screws were put on the concavity and in the peri-apical region. Radiological evaluation was done by whole spine standing AP, lateral radiograms preoperatively and 1, 3, 6 and12 months after surgery. Cobb's angles were measured and the spinal balance was noted. Clinical evaluation was done by SRS questionnaire. The complications were documented.Results:The mean preoperative Cobb's angle was 58.35° (range – 44 to 72°), which came down postoperatively to 23.45° (range – 10 to 38°) signifying a mean correction of 59.57% (range – 26.92 to 76.17%). Clinical outcomes were evaluated using the SRS – 30 questionnaires. The values of mean pre- and postoperative scores are 3.68 and 4.18, showing an improvement of 0.5 points. Other than one patient of superficial wound infection, which healed with antibiotics, there was no major complication. No patient had neurological deterioration.Conclusion:Side-opening spinal instrumentation systems, using the axial translation technique, achieved good clinical and radiological outcome for patients of AIS.
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