A 5-year-old Palomino gelding was presented at the Stange Memorial Clinic on Sept. 18, 1952. The history was of castration early in June. The horse had been cast for the operation but succeeded in regaining its feet numerous times during the operation. During the process of casting, several rope burns of the hind limbs were produced. The surgical incision had healed without any complications, but later in the summer he began to develop a stiffness of the pelvic limbs. In conjunction with the stiffness, the right inguinal region became swollen. Antibiotics were used as treatment, but with unsuccessful results.