Objective To determine the long‐term return to performance of horses with impinging and/or overriding dorsal spinous processes (ORDSP) treated with interspinous ligament desmotomy (ISLD) and to determine the prognostic value of radiographic and scintigraphic grades. Study design Retrospective study. Animals Seventy‐one horses with ORDSP treated with ISLD. Methods Medical records were reviewed for signalment, physical examination, gait evaluation, and number of interspinous spaces treated. Preoperative radiographic and scintigraphic images were evaluated with grading scales. Follow‐up was obtained with a telephone questionnaire. Prognostic value of the number of affected interspinous spaces, radiographic grading, and scintigraphic grading was tested by using a χ2 test. Results A median follow‐up of 35 months (range, 8–64) was available for 56 horses. Fifty‐one of 56 (91.1%) horses returned to some level of performance, with 27 of 51 (52.9%) horses achieving equivalent or higher level of performance. Achieving a lower level of performance was attributed to recurrent back pain in nine of 24 (37.5%) horses and to unassociated lameness in nine of 24 (37.5%) horses. Owners of 44 of 56 (78.6%) horses were satisfied with the postoperative performance level, and owners of 46 of 56 (82.1%) horses would recommend the procedure. None of the variables tested influenced the return to performance. Conclusion Interspinous ligament desmotomy allowed horses with ORDSP to return to some level of performance, although fewer returned to an equivalent or higher level of performance than had previously been reported. Clinical significance Interspinous ligament desmotomy allows affected horses to return to some level of performance, regardless of the severity of radiographic and scintigraphic findings.

A 12 week‐old Nigerian dwarf (Capra aegagrus hircus) buck kid was hospitalized for management of obstructive urolithiasis. Postoperatively, he was inadvertently administered 16‐times greater than his calculated dose of a nonsteroidal anti‐inflammatory drug (NSAID; 17.5 mg/kg flunixin meglumine, IV). The goat was treated with intravenous administration of lipid emulsion (ILE) prior to membrane‐based therapeutic plasma exchange (mTPE) under general anesthesia. The increased coagulability inherent to small ruminants in comparison with dogs and cats warranted specific adjustments in the prescription of anticoagulation, blood flow, and filtration fraction to avoid circuit clotting during mTPE. Serum flunixin meglumine concentration measured before, during, and after mTPE revealed marked reduction in drug concentration. After the combined treatments, no clinical evidence of NSAID gastrointestinal or renal toxicosis was detected. This case report describes successful management of flunixin meglumine overdose in a small ruminant using combined ILE and mTPE.