A patient with L3 AIS A SCI has functional quadriceps (4/5), intact hip flexors, tibialis anterior (4/5), but absent ankle plantarflexors and weak hamstrings. Which orthotic and assistive device prescription is MOST appropriate?

A patient with L3 AIS A SCI has functional quadriceps (4/5), intact hip flexors, tibialis anterior (4/5), but absent ankle plantarflexors and weak hamstrings. Which orthotic and assistive device prescription is MOST appropriate?

• A. Bilateral KAFOs with a rolling walker
• B. An RGO with bilateral Lofstrand crutches
• C. Bilateral AFOs with forearm crutches or canes, using a reciprocal gait pattern
• D. Bilateral HKAFOs with a standard walker

Answer: (C)

The key idea is matching orthotic support to what the injury preserves and what it lacks. With L3 AIS A, the patient has functional hip flexors and knee extensors (quadriceps), and decent dorsiflexion, but no ankle plantarflexors. That means you don’t need a heavy, energy‑intensive device that locks or rigidly controls the knee or hip. You do need ankle stabilization to prevent the foot from collapsing or dragging, and you can rely on the preserved knee and hip muscles to drive gait. Bilateral ankle-foot orthoses provide the necessary ankle control, keeping the foot in a stable position during stance and allowing smooth clearance and advancement during swing. Using forearm crutches or canes supports balance and weight‑bearing, while a reciprocal gait pattern enables efficient, alternating leg movement without overcomplicating the brace hardware. This combination respects the patient’s residual strength and avoids the burden of more extensive orthoses. Options requiring knee or hip stabilization beyond what’s needed (like KAFOs or HKAFOs or a reciprocating gait orthosis) would be unnecessarily bulky and energy‑intensive given the preserved knee/hip function. Similarly, an RGO isn’t needed when the hip and knee can contribute adequately to gait.

The key idea is matching orthotic support to what the injury preserves and what it lacks. With L3 AIS A, the patient has functional hip flexors and knee extensors (quadriceps), and decent dorsiflexion, but no ankle plantarflexors. That means you don’t need a heavy, energy‑intensive device that locks or rigidly controls the knee or hip. You do need ankle stabilization to prevent the foot from collapsing or dragging, and you can rely on the preserved knee and hip muscles to drive gait.

Bilateral ankle-foot orthoses provide the necessary ankle control, keeping the foot in a stable position during stance and allowing smooth clearance and advancement during swing. Using forearm crutches or canes supports balance and weight‑bearing, while a reciprocal gait pattern enables efficient, alternating leg movement without overcomplicating the brace hardware. This combination respects the patient’s residual strength and avoids the burden of more extensive orthoses.

Options requiring knee or hip stabilization beyond what’s needed (like KAFOs or HKAFOs or a reciprocating gait orthosis) would be unnecessarily bulky and energy‑intensive given the preserved knee/hip function. Similarly, an RGO isn’t needed when the hip and knee can contribute adequately to gait.