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Caslick's vulvoplasty for the correction of pneumovagina in mares

IN 1937, Caslick described deformities in the perineal conformation of some thoroughbred mares, which could cause pneumovagina and sometimes faecal contamination of the vestibule, leading to cervicitis, endometritis and subfertility. He described a correcting vulvoplasty operation which reduced the vulval aperture. This operation became known universally as the 'Caslick' operation. It was a 'milestone' in equine gynaecology and it remains an invaluable aid to equine fertility.