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Metzner, Moritz; Maierl, Johann; Absmeier, A.-G.; Baumgart, I.; Rademacher, G.; Klee, Wolfgang (2007): Der angeborene Sehnenstelzfuß beim Kalb: Aktueller Stand der Kenntnisse zur Neuromyodysplasia congenita (NMDC), Untersuchungen zur Auftrittshäufigkeit und Therapiemöglichkeiten. In: Tierärztliche Praxis / G, Großtiere, Vol. 35, No. 4: pp. 247-254
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Objective: In the introduction the various hypotheses on the aetiology of congenital contracture of the flexor tendons in calves (CCFT )mentioned in the literature are described and discussed. In a field study the incidence on dairy farms, characteristics of the calving process and the development of the respective calves were investigated. Material and methods: 1,238 calves representing about 70% of all calves born within the course of 12 months in 65 dairy farms were examined for CCFT between their first and third day of life. Calves with CCFT were re-checked in weekly intervals until the condition had disappeared or the calf was no longer on the farm. The conditions of birth (presentation, position, and posture) were recorded. Results: CCFT was diagnosed in 168 (13.6%) of the calves enrolled, of which 88.7% were classified as grade 1, and 11.3% as grade II, while none were considered to be grade III. In 90.5% of the cases, only the front legs were affected, both front and hind legs were affected in 7.7%, and only the hind legs were affected in 1.8%. Male calves were affected significantly more frequently than female calves, as were twins. Incidence was higher in calves born in posterior presentation. Conclusion: The findings are compatible with the hypothesis that the amount of available space in the uterus plays a role in the pathogenesisof CCFT. In almost 90% of the affected calves, the condition disappeared without veterinary intervention. Clinical relevance: The degree of CCFT determines the kind of intervention. While low grade flexions require no special therapy, intervention is indicated in more severe cases. The options for treatment (gluing small boards under the claws, cast with out or with tenotomy of the flexor tendons) are described in detail. The application of oxytetracycline (60 mg/kg 13W) had no positive effect on the disease.