The medical records of 56 cows suffering from teat obstructions in the area of the rosette of Furstenberg were reviewed; 22 were treated by thelotomy and 34 by theloscopic triangulation and the long-term results were reviewed by telephone conversations with the owners up to four years after the surgery. The milk flow at the fourth milking session after surgery was significantly better in the cows treated by theloscopy and, as a result, fewer of these cows required the teat sphincter to be cut. The cows treated by theloscopy also stayed in hospital for a significantly shorter period and suffered fewer episodes of mastitis.
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