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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 87 - 87
1 Sep 2012
Knight D Alves C Wedge J
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Background

Habitual hip subluxation and dislocation is a potentially disabling feature of Trisomy 21. We describe long-term outcomes following precise use of the femoral varus derotation osteotomy to achieve and maintain hip stability and community ambulation.

Methods

All individuals with Trisomy 21, who had hip surgery at Toronto's Hospital for Sick Children between 1998 and 2008, were searched using the hospital databases.

16 hips in 9 children aged less than 10 years, were identified. All had a femoral varus derotation osteotomy (VDRO) with a target femoral neck shaft angle (NSA) of 105° and less than 20° external rotation. All were performed by the senior author JHW. The clinical notes and radiographs were reviewed from presentation to final follow up.

Continuous variables were assessed for normality with the d'Agostino Pearson test. Normally distributed variables are presented as means with 95% confidence intervals. Pre and postoperative means were compared using the student's t-test for paired samples.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 336 - 336
1 Sep 2012
Alves C Oliveira C Murnaghan M Narayanan U Wright J
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Background

Primary dislocation of the patella is a common acute knee disorder in children, adolescents and young adults. While primary dislocation of the patella has traditionally been treated non-operatively, primary operative repair of the medial patella-stabilizing soft tissues has been popularized more recently and thought to reduce the risk of dislocation. However, several studies have shown substantial rates of redislocation with longer follow-up time, irrespective of treatment. The purpose of this systematic review was to compare operative and non-operative treatment for primary dislocation of the patella, regarding redislocation rates and symptoms.

Methods

Based on a systematic literature search of the medical literature from 1950 to 2010, three randomized and two quasi-randomized controlled clinical trials comparing surgical stabilization with non-operative treatment for patients with primary patellar dislocation were selected. The Risk of Bias Tool (Cochrane Handbook, 2008) was used to assess the quality of the studies included. Study results were pooled using the fixed-effects and random-effects models with mean differences and risk ratios for continuous and dichotomous variables, respectively. Heterogeneity across studies was assessed with Q test and I-square statistic. A sensitivity analysis was performed by assessing the change on effect size by eliminating each single trial.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_VII | Pages 5 - 5
1 Mar 2012
Knight D Alves C Wedge J
Full Access

Purpose

Habitual hip subluxation and dislocation is a potentially disabling feature of Trisomy 21 and we describe long-term outcomes following the precise use of femoral varus derotation osteotomy.

Methods

16 consecutive hips, 9 children, with Trisomy 21 aged =10 years, were identified from hospital databases. Clinical notes and radiographs from presentation to final follow-up were reviewed.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_VII | Pages 3 - 3
1 Mar 2012
Knight D Alves C Holroyd B Alman B Howard A
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Purpose We report the long term outcome of a minimally invasive technique avoiding the risks associated with open reduction and bone grafting in paediatric lateral condyle fracture non-unions.

Methods The Toronto Hospital for Sick Children's radiology database was searched to isolate all those who sustained a lateral condyle elbow fracture and had developed a non-union between the years 1998 and 2008. This identified 16 patients who had undergone percutaneous fixation for the treatment of their non union. Each individuals clinical notes and radiographs were reviewed from presentation to final follow-up.

Results Median age at injury was 5.1 (3.2, 7.2) in the successful and 2.8 (2.1, 4.7) in the unsuccessful groups (p=0.18). 11 patients (68.7%) had been initially managed non-operatively. Median time from injury to non-union diagnosis was 15.7 weeks in the successful, and 225.5 weeks in the unsuccessful group (p=0.039).

Mean time to union post fixation was 16.2 weeks (+/- 6.74) and mean time to surgery was 5.2 weeks (+/- 4.11). Surgery was successful, defined as radiological and clinical union, in 12 of 16 patients (75%). 43.8% had metalwork removal and no cases of avascular necrosis were reported.

Conclusion We have demonstrated this technique to be successful in those non-unions addressed within 16 weeks from initial injury to diagnosis. We had 4 failures, these occurred in patients whose non-unions were diagnosed more than 31 weeks from the time of injury (31; 68; 383; 427 weeks). Each of these failures had been managed non-operatively as part of their primary treatment plan.

Percutaneous fixation is feasible and safe. Patients not achieving union were diagnosed significantly later. There was a trend towards successfully treated patients being younger.


Orthopaedic Proceedings
Vol. 88-B, Issue SUPP_I | Pages 147 - 147
1 Mar 2006
Pereira M Ventura N Ey A Neves L Ramos M Alves C Dinis M
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Introduction: Concave ribs are in a position to act as a butttress preventing the reduction of the spine towards the midline. Segmental concave ribs osteotomy decrease the buttress effect increases the flexibility of the curve and allow the spine to approach a more mideline position.

Purpose: To analyze radiographic and perioperative data in patients undergoing posterior thoracic instrumented fusion and concave ribs osteotomies.

Methods: 34 patients with rigid thoracic curves treated with hybrid constructs (hooks, wires and pedicle screw) and concave rib osteomies( averaged 5) between 2000 and 2003 are included. All patients obtained pre-operative upright and bending films and postoperative upright films. Cobb angle was collected and three parameters were assessed: percent flexibility, percent scoliosis correction and the percent bend corecction. Main age was 14 years with 20 females and minimun follow up 1 year.

Results: There were 13 A.I.S., 8 neuromuscular cases and the rest associate to different pathologies (syringomyelia, cardiopathy ect.). Preoperative thoracic curve averaged 78(60–112); percent bend correction veraged 25% and postoperative correction averaged 58%. There were no neurological complications, 4 patients developed pulmonary complications ( pleural effusion) who required suction drenage.

Conclusions. Rigid curves undergoing concave rib osteotomies achieved a postoperative curve that was 58% of the preoperative bend curve. Concave rib osteomomies increase flexibility of severe rigid curves avoiding anterior realese in the great majority of large curves with minimmal pulmorary complication. Overlapping the osteotomized ribs on the concave rod the chest asymmetry improves and the cosmetical result of the operation is improved.