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  • Title: Correction of length discrepancies and angular deformities of the leg by Blount's epiphyseal stapling.
    Author: Raab P, Wild A, Seller K, Krauspe R.
    Journal: Eur J Pediatr; 2001 Nov; 160(11):668-74. PubMed ID: 11760024.
    Abstract:
    UNLABELLED: The management of leg length difference (LLD) and angular deformities of the leg remains controversial. Numerous treatment options have been proposed over the past years depending on the patient's general condition, skeletal age, function, and degree and configuration of the deformity. Our retrospective study consisted of 48 patients with 58 legs treated between 1970 and 1991 by Blount's epiphyseal stapling to equalise length or correct angular deformity. After an average follow-up of 16.5 years, all patients with idiopathic bow-legs or knock-knees (n=12) and 71% of LLD caused by overgrowth (e.g. Klippel-Trenaunay syndrome) showed good and excellent results at skeletal maturity, whereas the results of the treatment of LLD with undergrowth of the leg and angular deformities due to trauma, infection or general dysplasia and malformation were fair to poor because of the difficulty in prediction of growth development and growth potential, allowing only for partial correction of the deformity. Besides the restriction of the stapling procedure due to the aetiology of the deformity, the age of the patients at the time of surgery is important, as it determines the complication rate of this technique (loosening or dislocation of staples). Thus Blount's epiphyseodesis should not be performed before the age of 9 years in girls and 11 years in boys. CONCLUSION: Blount's epiphyseal stapling can be recommended as a safe procedure with predictably good results in idiopathic angular deformities of the leg and leg length difference caused by overgrowth.
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