SACH Foot
Pronunciation: sak foot
Also written as: SACH — Solid Ankle Cushion Heel
Acronym for Solid Ankle Cushion Heel foot; a non-articulating prosthetic foot design that simulates ankle motion through compression of a cushioned heel wedge.
Full Definition
The SACH foot is one of the most widely used and longest-established prosthetic foot designs. It has a solid, non-articulating ankle joint and a compressible rubber heel wedge that absorbs impact during heel strike, mimicking the plantarflexion action of the biological ankle. Unlike dynamic-response feet, SACH feet do not return stored energy during push-off. SACH feet are durable, low-maintenance, and inexpensive, making them common in low-activity or geriatric patients and in lower-resource settings. Editors should render the acronym in all capitals (SACH) followed by 'foot' in lower case.
Usage
Usage note: Always rendered SACH (all caps) followed by lowercase 'foot.' Expand on first use in formal documents. Do not confuse with articulated or dynamic-response designs.
In Context
- "Given the patient's limited household ambulation, the team agreed a SACH foot was clinically appropriate." — Multidisciplinary team note
- "The billing code for the SACH foot should appear on line 3 of the DMEPOS claim form." — Billing department guide