What type of splint applies constant pull along the length of the lower extremity to stabilize a fractured bone?

A traction splint is designed specifically to immobilize and stabilize fractures by applying a constant pull along the length of the affected limb. This type of splint is particularly effective for femur fractures, as it helps to align the bone fragments and reduce muscle spasms that can complicate injuries. By applying continuous tension, traction splints ensure that the broken ends of the bone remain aligned, which is crucial for proper healing and minimizing pain.

In contrast, a pneumatic splint primarily uses inflatable materials to provide support and stabilize an injured area but does not apply the same type of continuous pull as a traction splint. A flail segment refers to a section of the torso or limb that is detached and moves freely, which is unrelated to the concept of splinting for fractures. Dislocation indicates a joint where bones are no longer aligned, but it doesn't specify a method for stabilization like a traction splint does. Therefore, the choice of a traction splint is correct as it directly addresses the need for constant pull to stabilize a fractured bone effectively.