Sartorius Muscle Contracture in a German Shepherd Dog

Abstract

Sartorius muscle contracture can be treated by tenectomy or removal of contracted muscle tissue, however, long-term outcome suggests the need to develop approaches that prevent recurrence caused by scarring of transected tissues.

Myositis ossificans circumscripta of the triceps muscle in a Rottweiler dog

“…The localized or circumscript form is characterized by heterotopic, non-neo-plastic bone formation in one muscle or a group of muscles due to metaplastic evolution of a fibrotic contracture or myopathy (1,2). The condition, described mainly in horses and dogs, generally affects the caudal muscles of the thighs especially the biceps femoris, semitendinosus, semimembranosus, gracilis, sartorius and gluteal muscles, typically in the region of coxofemoral joint (3)(4)(5)(6)(7)(8)(9)(10). The aetiopathogenesis is uncertain.…”

Bilateral Iliopsoas Muscle Contracture and Spinous Process Impingement in a German Shepherd Dog

“…Common abnormalities observed in dogs include infraspinatus 7–15 and quadriceps muscle contracture 8,14,16,17 . Fibrotic myopathy of the supraspinatus, 8,14 teres minor, 18 sartorius, 19,20 gracilis, and semitendinosus muscles 8,14,21,22 has been reported but the cause(s) remain(s) elusive. Traumatically induced iliopsoas strain in dogs 5,23–25 can be unilateral or bilateral, causing lameness and pain during internal rotation and extension of the hip that usually responds to rest and nonsteroidal anti‐inflammatory drug therapy.…”

Traumatic fibrotic myopathy of the tensor fascia lata muscle in a Whippet

“…Surgical resection or release of contracted supraspinatus, infraspinatus, teres minor and iliopsoas muscle tendons are reported to carry good prognoses (6-8, 10, 14). On the other hand, resection or release of contracted gracilis, semitendinosus and sartorius muscle tendons tends to have a more guarded prognosis with a high rate of recurrence reported due to the formation of bridging fibrous tissue up to 12 months post-surgery (9,11,12). The cause of the disparities in response to surgery is unknown.…”

“…The cause of the disparities in response to surgery is unknown. However, differing aetiopathogeneses, incomplete surgical resection, and the anatomical location have been suggested to predispose to recurrence (4,9,11).…”

“…Progressive fibrotic myopathy is a pathological process in which there is irreversible replacement of a myotendinous unit with fibrous connective tissue leading to muscle contracture. Reported aetiologies include musculoskeletal trauma with or without compartment syndrome, repetitive strain injuries, infection, ischaemic insults, immune-mediated disease, and neoplasia (4,(6)(7)(8)(9)(10)(11)(12). Fibrotic myopathies are most frequently reported in highly active and working breed dogs (4,6,8,12).…”