A patient with bilateral transtibial (below-knee) amputations requires functional prostheses. Which prosthetic foot design is most appropriate for recreational running and high activity levels?
- A SACH (Solid Ankle Cushion Heel) foot
- B Single-axis foot with a hydraulic ankle joint
- C Carbon fiber energy-storing and returning (ESR) dynamic response foot (e.g., Flex-Foot Cheetah) ✓
- D Multi-axial foot with rubber bumper absorbers
Explanation
Carbon fiber energy-storing and returning (ESR) dynamic response feet (e.g., Ossur Cheetah running blade) are designed for high-activity amputees and athletes. They store energy during foot flat/loading response and release it at push-off, mimicking Achilles tendon function. SACH feet are low-cost, durable, suitable for sedentary/elderly patients but absorb rather than return energy. Single-axis and multi-axial feet provide stability and shock absorption but lack energy return for running. Activity level (K-level, K0-K4) guides prosthetic prescription; K4 (high activity athlete) requires ESR/dynamic feet.
Reference: Maheshwari Essential Orthopaedics, 6th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.