Bilateral Gastrocnemius Muscle Rupture in a Bovine

Abstract

Background: Locomotor system diseases are quite common in the field practice in dairy cattle and represent an important cause of economics losses. The rupture of the gastrocnemius muscle has been reported in humans, cattle, horses, camels and llamas. It can be complete or partial. The rupture of muscle as well as sacral fractures are infrequent, and consequently not commonly reported in veterinary medicine. The aim of this work was to report a case of bilateral gastrocnemius rupture in a dairy cow related to a sacral (S2) fracture.Case: A 3-year-old Holstein cow with lameness and urinary incontinence was presented for clinical examination. After three days, clinical signs progressed to sternal recumbency and difficulty to keep normal posture. While standing, the cow’s tarsal joint showed a 90o degree angle with tibia, in a manner that the metatarsal bones were completely leant on the ground. Also, a marked enlargement in both gastrocnemius area were observed. The animal was in good body condition and alert,although unable to maintain both hind limbs extended straight, and was not able to raise the tarsal joint off the ground. Physiological parameters presented normal values. Due to the poor prognosis, euthanasia and necropsy were conducted. At necropsy, it was observed that in both hind limbs the gastrocnemius muscle was ruptured, presenting severe diffuse dark red color, severe enlargement, and moderate diffuse edema and emphysema. The rupture was complete and observed at both muscular insertions in the calcaneus bone. Besides the muscular alterations, the animal had a 2 centimeters fracture on the second sacral vertebra, associated with focally extensive hemorrhage in the spinal canal and meninges. Histologically the main findings were degeneration and severe diffuse necrosis of muscle fibers associated with severe hemorrhage, and mild infiltrate of neutrophils.Discussion: Fractures in cattle may occur due to multiples causes, however farm management and facilities play an important role in the incidence of these disorders. Slippery floors along with groups composed of animals of different sizes and ages are a major cause of injury in this species. The consequence of a vertebral fracture vary greatly according to the location and extent of the injury, the degree of spinal cord compression and which spinal anatomical structures are involved. Besides the direct damage caused by the fractures in the bone’s stability, changes can also occur in related structures, such as muscles and tendons, which are extremely important for the animal to maintain its normal stance and move adequately. One example is the trauma of gastrocnemius muscle that is found sporadically due to struggling. In this case it is conjectured that the pain and the spinal cord compression at the fracture’s location, lead to difficulty for the animal to rise, culminating with the ruptured muscles by overexertion. The characteristic position adopted by the animal was useful to establish the diagnosis, although necropsy was necessary to confirm it. Once the occurrence of this condition is infrequent, this report becomes important to aid veterinarians in order to differentiate it from other diseases of the musculoskeletal and nervous systems, including toxic conditions as Senna sp. and ionophore poisoning, besides nutritional myopathies such as vitamin E and selenium deficiency. Coxofemoral luxation and infectious diseases such as rabies and botulism should also be considered.

Successful treatment of gastrocnemius muscle rupture in a long-tailed goral rescued from a live trap: a case report

“…Severe lameness in the limb is the main symptom of gastrocnemius muscle rupture and can occur for various reasons. Consequently, it is necessary to differentiate between several causes related to fractures, trauma, mineral deficiency, and nutritional myopathy due to vitamin E and selenium deficiency [ 1 ]. Therefore, it is necessary to diagnose serum minerals (Ca, Mg, P, and Fe) and muscle-related enzymes (CK and AST) through blood tests and imaging modalities such as X-ray, computed tomography, and MRI [ 2 ].…”

“…Above all, careful monitoring is necessary due to the fragility of the skin and the risk of severe decubitus lesions due to long-term treatment. In addition, careful bedding management is required to prevent slippage and falling [ 1 4 ]. The hindlimb of the goral, in this case, was bilateral but partial, and the mobility of the leg was gradually restored; therefore, additional lesions were prevented with a dressing, including a thick donut-shaped cushion, instead of choosing cast treatment.…”

“…Gastrocnemius muscle rupture is one of the diseases of the locomotor system, especially in farm animals, and causes significant economic losses [ 1 ]. Gastrocnemius muscle rupture can be partial or complete and has been reported in humans, horses, cattle, camels, and llamas [ 1 2 3 4 5 ]. However, gastrocnemius muscle rupture in wild animals has not yet been well documented.…”

Surgical Correction of Bilateral Gastrocnemius Muscle Rupture and Its Prognosis in a Korean Native Calf

“…Gastrocnemius muscle rupture is a musculoskeletal disorder that is rarely reported in cattle but can occur in various animals, including horses, camels, llamas, and wild animals (1,2,6). In cattle, such rupture disturbs the weight-bearing ability of the affected limb and carries a hopeless prognosis, resulting in significant economic losses (8).…”

“…Ruptures can occur in both cows and calves. In adult cattle, it can result from continuous and drastic movement in situations that make it difficult for cattle to rise, such as slipping and falling or suffering from hypocalcemia (2,6). In the case of young calves, this may occur when they become trapped in mud or deep manure or if they have other conditions that cause them to struggle excessively.…”