Which Salter-Harris fracture types can generally be treated with closed reduction and cast immobilization?

Which Salter-Harris fracture types can generally be treated with closed reduction and cast immobilization?

• A. Type I
• B. Types I and II
• C. Types I, II, and III
• D. Types II, III, and IV

Answer: (C)

Growth plate injuries are managed by where the fracture travels and how it affects the joint surface. When the fracture is confined to the growth plate itself (Type I) or extends into the metaphysis without involving the joint surface (Type II), the injury is typically stable and can often be reduced with a closed maneuver and then immobilized in a cast. This nonoperative approach works well because the joint remains intact and the alignment can be maintained with casting, reducing the risk of growth disturbance. Type III crosses into the epiphysis and involves the joint surface, which makes precise alignment important for joint congruity. If the displacement is not severe and a stable, anatomic reduction can be achieved without open surgery, casting with careful follow-up may be appropriate. However, more significant displacement usually necessitates surgical reduction to restore the joint surface and prevent arthritis or growth problems. In contrast, Type IV involves both the joint surface and the growth plate, and Type V is a crush injury of the physis; these patterns more often require surgical management or have poor prognosis with casting alone, so they are not typically treated with closed reduction and cast immobilization.

Growth plate injuries are managed by where the fracture travels and how it affects the joint surface. When the fracture is confined to the growth plate itself (Type I) or extends into the metaphysis without involving the joint surface (Type II), the injury is typically stable and can often be reduced with a closed maneuver and then immobilized in a cast. This nonoperative approach works well because the joint remains intact and the alignment can be maintained with casting, reducing the risk of growth disturbance.

Type III crosses into the epiphysis and involves the joint surface, which makes precise alignment important for joint congruity. If the displacement is not severe and a stable, anatomic reduction can be achieved without open surgery, casting with careful follow-up may be appropriate. However, more significant displacement usually necessitates surgical reduction to restore the joint surface and prevent arthritis or growth problems.

In contrast, Type IV involves both the joint surface and the growth plate, and Type V is a crush injury of the physis; these patterns more often require surgical management or have poor prognosis with casting alone, so they are not typically treated with closed reduction and cast immobilization.