Abstract
BackgroundThe aim of this study was to evaluate patellar morphological changes following surgical correction of recurrent patellar dislocation in children.MethodsA total of 35 immature children aged 5 to 10 years who suffered from bilateral recurrent patellar dislocation associated with abnormal patella morphology were enrolled in this study. The knees with the most frequent dislocations (treated with medial patellar retinacular plasty) were selected as the study group (SG), and those undergoing conservative treatment for the contralateral knee were selected as the control group (CG). Computed tomography (CT) scans were performed on all children preoperatively and at the last follow-up to evaluate morphological characteristics of the patella.ResultsAll the radiological parameters of the patella showed no significant difference between the two groups preoperatively. At the last follow-up for CT scans, no significant differences were found for the relative patellar width (SG, 54.61%; CG, 52.87%; P = 0.086) and the relative patellar thickness (SG, 26.07%; CG, 25.02%; P = 0.243). The radiological parameters including Wiberg angle (SG, 136.25°; CG, 122.65°; P < 0.001), modified Wiberg index (SG, 1.23; CG, 2.65; P < 0.001), and lateral patellar facet angle (SG, 23.35°; CG, 15.26°; P < 0.001) showed statistical differences between the two groups.ConclusionsThe patellar morphology can be improved by early surgical correction in children with recurrent patellar dislocation. Therefore, early intervention is of great importance for children diagnosed with recurrent patellar dislocation.
Highlights
The patella plays an important role in human activities
The key finding of the current study was that the patellar morphology could be improved by early surgical correction in children with the setting of recurrent patellar dislocation compared with conservative management
SG, study group; CG, control group; RPW, relative patellar width; RPT, relative patellar width; WA, Wiberg angle; MWI, modified Wiberg index; LPFA, lateral patellar facet angle patellar dislocation, as the improvement of patella and femoral trochlear in patients of patellar dislocation may allow for the avoidance of an additional surgical procedure
Summary
The patella plays an important role in human activities. Patellar dislocation is a common medical condition in clinical practice, which has the highest incidence among children and adolescents, reaching approximately147.7 per 100.000 person-years [1]. Patellar dislocation is a common medical condition in clinical practice, which has the highest incidence among children and adolescents, reaching approximately. Jaquith and Parikh found that adolescents with open physis had more than twice the risk of recurrent patellar dislocation compared to patients with closed physis [4, 5]. Dejour et al [6] showed that 96% of patients with patellar dislocation had trochlear dysplasia. Servien and Li found that patients with trochlear dysplasia had a patella of smaller width, thinner thickness, more flattened articular facet and increased Wiberg index [7, 8]. Jaquith and Parikh reported a evident fact that the simultaneous presence of a patellar and trochlear. The aim of this study was to evaluate patellar morphological changes following surgical correction of recurrent patellar dislocation in children
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