Читать книгу Fractures in the Horse - Группа авторов - Страница 64

Articular involvement often influences treatment decisions and can affect prognosis depending on the location of the fracture. Disrupted articular congruity can predispose to development of osteoarthritis and reduce the prognosis for return to athletic activity. For example, conservative management of all but the smallest supraglenoid tubercle fractures typically results in residual lameness secondary to osteoarthritis of the shoulder joint [189]. In other anatomic locations, articular involvement does not appear to be as detrimental. For example, 98% of horses that sustain an incomplete fracture of the proximal aspect of the third metacarpal bone return to athletic function, even though these fractures typically involve the carpometacarpal joint [190].

Figure 3.20 Salter–Harris physeal injury classification. Type I injuries are confined to the physis. Type II injuries traverse along the physis and then exit into the metaphysis. Type III and IV injuries involve the epiphysis and adjacent articulation. Type III injuries are restricted to the epiphysis and physis, while type IV injuries cross into the metaphysis. Type V injuries are compression fractures of the physis with little or no displacement.

Source: Modified from Richardson et al. [177].