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Fractures and Dislocations in Children

Introduction The treatment of the displaced fracture of the lateral condyle of the distal humerus in children aims not only to avoid nonunion, malalignment, and impairment of the range of motion of the elbow but also to prevent delayed healing and the development of any prearthrotic deformity. To date there is no agreement on what kind of osteosynthesis should be used. So far, the screw fixation and Kirschner wire fixation have both been applied. Therefore, the goal of this study was to compare the outcome of these two methods. Materials and Methods A retrospective cohort study was undertaken including 43 patients aged 2 to 13 years who underwent osteosynthesis for a condylar fracture of the humerus over a period of 10 years. The electronic archive, including the radiological diagnostics, was analyzed. Statistical analysis was performed using IBM SPSS Statistics 20.0. Statistical significance was set at an α level of p = 0.05. Results Kirschner wire fixation was performed in 48.9% of condylar fractures of the humerus while screw fixation (alone or in combination with a pin) was assessed with a percentage of 51.1% of the cases in this study. Screw fixation only was applied in 20.9% of fractures of the lateral condyle. The selection of the method was independent of the age of the patient (p = 0.2). The comparison of the rate of complications and an impaired range of motion after Kirschner wire osteosynthesis to the rate after screw osteosynthesis showed a significantly lower percentage for the Kirschner wire group (p = 0.046). No case of nonunion, nerve palsy, or pin migration was detected in any patient in this study. Conclusion Kirschner wire fixation of condylar humeral fractures in children resulted in a lower rate of complications than screw fixation. No case of nonunion of the fracture was found in the patients that we investigated so that we conclude that Kirschner wires sufficiently adapt the fracture in these cases. Level of Evidence Level III.

Lateral Condyle Fracture of the Humerus in Children: Kirschner Wire or Screw Fixation?

Osteochondral flap fractures of the coronoid are rare occult fractures, often diagnosed in delay, in pediatric patients who underwent elbow dislocations. Only 11 pediatric cases of osteochondral flap fractures of the coronoid are described in the literature. We describe a pediatric case treated in our institution for an elbow dislocation accompanied by a triad of elbow fractures, including the osteochondral flap fracture of the coronoid, and review available literature on the osteochondral flap fracture of the coronoid in pediatric patients.

Osteochondral flap fracture of the coronoid in pediatric elbow dislocation: a case report and literature review.

OBJECTIVES
Lateral humeral condyle fractures account for 12% to 17% of all distal humerus fractures in children, and usually occur as an isolated injury or are associated with radial neck and/or proximal ulna fractures. The presentation with a concomitant dislocation of the elbow is rare. Therefore, literature on young patients with this uncommon combination is sparse and mostly limited to case reports and small case series. The aim of the present study is to identify the best treatment strategy for this injury, recognize potential risk factors for the development of complications, and identify predictors of outcome.


METHODS
This is a multicenter retrospective review of electronic and written medical records for skeletally immature patients who were diagnosed with a lateral condyle fracture of the humerus associated with elbow dislocation (ED). Data recorded included patient demographics, fracture classification, direction of the dislocation, treatment strategy, time to union, elbow range of motion, complications, and additional procedures. The modified Flynn criteria were used to determine the outcomes.


RESULTS
We identified 23 patients who presented to 3 institutions with a concomitant lateral humeral condyle fractures and an ED. The mean age at the time of injury was 8.7 years (range: 6 to 13 y). The median time from injury to surgery was 1 day (interquartile range: 0.5, minimum to maximum: 0 to 29 d). The median follow-up was 24 weeks (interquartile range: 16, minimum to maximum: 4 to 120 wk). The injury occurred more commonly in males (79%) with Weiss type 3 fractures. The direction of the dislocation was posterior or posteromedial in most cases. Open reduction through a modified Kocher lateral approach and fixation with either Kirschner wires (N = 12) or cannulated screws (N = 9) was the preferred method of treatment. Eight patients (34.8%) developed complications, including persistent elbow stiffness (N = 5), elbow instability (N = 1), and avascular necrosis (N = 2). There were no cases of delayed union, nonunion, malunion, heterotopic ossification, neurological injury, or hardware failure. Patients treated with casting or Kirschner wire fixation had a significantly increased rate of elbow stiffness compared with screw fixation (50%, 25%, and 11%, respectively, P = 0.015). According to Flynn's criteria, 65% of the patients had good or excellent outcomes, and 35% had poor.


CONCLUSION
The findings of this study demonstrate a higher than previously described rate of complications in children with lateral condyle humerus fracture associated with ED, including persistent elbow stiffness, avascular necrosis, and chronic elbow instability, leading to unsatisfactory clinical outcomes in over one-third of the cases. Our findings suggest that the internal fixation with screws, combined with a shorter postoperative immobilization period (2 wk) may lead to improved clinical outcomes.


LEVEL OF EVIDENCE
Level III-therapeutic, case series.

Management of Lateral Condyle Humeral Fracture Associated With Elbow Dislocation in Children. A Retrospective International Multicenter Cohort Study.

Fracturas del cóndilo lateral del húmero asociadas a luxación de codo en niños. Una revisión sistemática de la literatura

In the pediatric population, lateral condyle fractures are relatively common elbow injuries, but not nearly as common are traumatic elbow dislocations, and these 2 types of injuries in combination are even less common. Our literature search showed only 2 reports on these concomitant injuries. In the study reported here, we evaluated a consecutive series of pediatric patients with lateral humeral condyle fractures with and without elbow dislocation and compared the groups' results.

Pediatric lateral condyle humeral fractures with and without associated elbow dislocations: a retrospective study.

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Pediatric lateral condyle humeral fractures with and without associated elbow dislocations: a retrospective study.