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  • Title: [Spasm of the adductor muscles, pre-dislocation and dislocations of the hip joints in children and adolescents with cerebral palsy. Clinical observations on aetiology, pathogenesis, therapy and rehabilitation. Part I: The effect of open myotenotomy of the gracilis muscle and of the long and short adductor muscles in connection with total extrapelvine resection of the obturator nerve, on the hip joints and static function (author's transl)].
    Author: Fettweis E.
    Journal: Z Orthop Ihre Grenzgeb; 1979 Feb; 117(1):39-49. PubMed ID: 218375.
    Abstract:
    Spasm and contraction of the adductor muscles involve, on the one hand, danger in respect of the development of a dislocation of the hip, and are a serious impediment to a walking ability on the other. Hence, surgery is often necessary. The article reports on the results of consequent weakening of the adductor muscles as a result of open myotenotomy in association with complete extrapelvine resection of the obturator nerve. 27 patients were subjected to surgery--in most cases bilaterally--at an age between 2 years and 5 months and 18 years, with a follow-up period of up to 15 years. The study does not include patients with spastic dislocation of the hip in whom this method was applied on the non-dislocated side and on the dislocated side in combination with iliopsoas tenotomy. This method makes it possible to achieve regression of existing defective positions of the hip joints. In a few cases, the valgus position of the neck of the femur was corrected to some extent. In two patients it was not possible to prevent the progress of a developing dislocation of the hip. These results show that, whereas the adductor muscles represent an essential factor for the occurrence of a spastic dislocation of the hip, other forces are most probably also involved. In the majority of cases, results were favourable in respect of the static function, although in some cases the success became evident after several years only, especially in mentally retarded patients and in apathetic individuals. Important for therapeutic success is the follow-up. The principles of its therapy are thoroughly discussed. Surgery is indicated only in special cases. Indications must be observed very strictly, since the risk of excessive weakening of the adductor muscles should not be underestimated.
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