Rib fractures in adult horses as a cause of poor performance; diagnosis, treatment and outcome in 73 horses.

BACKGROUND: Rib fractures in adult horses are poorly documented. OBJECTIVES: To describe the presenting signs, diagnosis, treatment and outcome of horses diagnosed with rib fracture. STUDY DESIGN: Retrospective case series. METHOD: The clinical records and diagnostic images of all adult horses diagnosed with a rib fracture at three referral centres over a 15-year period were reviewed. RESULTS: Seventy-three horses met the inclusion criteria. Horses presented due to either resistance to ridden work and poor performance (n = 41), lameness (n = 21) or trauma (n = 7). In four horses, the presenting complaint was not recorded. Clinical assessment and palpation localised the site of injury in 18/47 cases where recorded. Nuclear scintigraphic examination identified all fracture sites in which it was performed (59/59). In 10/24 horses, radiographic examination confirmed rib fracture. Ultrasonographic examination confirmed rib fracture in 58/59 horses (98%; 95% CI 92-100). Six horses underwent surgery due to ongoing clinical signs and non-healing fracture; all other horses were managed conservatively. Fifty-five horses were available for long-term follow up (>1 year), of which 28 (51%; 95% CI 38-64) returned to their previous level of exercise. Twelve horses did not return to their previous level of exercise due to lameness unrelated to the rib fracture and seven horses were subjected to euthanasia, of which three were as a result of the rib fracture. Eight horses did not return to their previous level of exercise for other reasons. MAIN LIMITATIONS: Incomplete data set due to retrospective case series. CONCLUSIONS: Although uncommon, rib fractures should be considered in cases of reduced performance or resistance during ridden exercise. Palpation may be unrewarding. Scintigraphy and ultrasonography are useful in identifying the fracture site. Rib fractures in horses carry a fair prognosis and can be managed conservatively in most cases.

Extraction of fractured cheek teeth under oral endoscopic guidance in standing horses.

OBJECTIVE: To evaluate a technique for oral extraction of fractured cheek teeth (CT) under oral endoscopic guidance. STUDY DESIGN: Case series. ANIMALS: Horses (n = 30) with fractured CT. METHODS: Medical records (April 2007-August 2010) of horses that had standing oral extraction of fractured CT under endoscopic guidance were reviewed. RESULTS: Thirty horses (median age, 11.5 years; range, 5-23 years) had 31 fractured CT (21 maxillary, 10 mandibular) removed. Midline sagittal fractures of maxillary teeth (n = 13; 42%) were the most common type, followed by buccal or palatal (10; 32%), and transverse or multiple (5; 16%) fractures. Extraction under endoscopic guidance was successful for 27 (87%) teeth. Median age of the surgical failure group was 7 years (range, 5-8 years), significantly lower than that of the surgical success group (P = .0135, Mann-Whitney U-test). CONCLUSIONS: Endoscopic viewing facilitates instrument use and removal of fractured CT in standing horses.

Musculoskeletal injuries in Thoroughbred racehorses: a study of three large training yards in Newmarket, UK (2005-2007).

Musculoskeletal injury is the most common cause of lost training days in the young Thoroughbred horse in flat race training. To date, there has been little investigation of the regional patterns of injury frequently observed by clinicians in racehorse practice. The present study was conducted to determine incidence of musculoskeletal injuries in Thoroughbreds in training in Newmarket, United Kingdom. Veterinary records for all horses resident in three large (>100 horse) training yards were assessed for occurrence of significant musculoskeletal injury. A total of 248 injuries were recorded in 217 individual horses, from a total population of 616 individual horses; fractures of the tibia (20.7%) and proximal phalanx (14.5%) were the most common. Overall injury rates were similar between yards (23-26%/year), with seasonal patterns noted for some injury types. Incidence of certain injuries (P1, metacarpal/metatarsal condylar, pelvic fractures, and superficial digital flexor tendonitis) varied between yards. The majority of carpal, P1 fracture and SDF tendonitis cases were right-sided.