Entra

A socket that
keeps fitting.

A residual limb changes size through the day. LaceFit adds laces to a standard prosthetic socket, so the wearer can adjust the fit themselves, for a few dollars of parts.

How it works Get involved
LaceFit on a below-knee socket A tapered socket shell with a vertical slot down the front. Grommets line both edges of the slot, laces cross between them, and a breathable panel sits behind the slot. Shell existing socket Grommets Laces Breathable panel
Schematic, not to scale. Prototype photos coming soon.

The problem

When a socket fits badly it rubs, slips and sweats, and people stop wearing the leg. Adjustable sockets exist, but they rely on proprietary parts and insurance approval.

5.6 million
Americans are living with limb loss or limb difference Source
25–57%
of prosthesis users abandon their device, citing discomfort, friction and poor socket fit Source
$30,000+
what multiple replacement sockets a year can cost the many users who need them Source
Why sockets fail →

How it works

  1. 01

    Cut

    A prosthetist or technician cuts a slot in a standard thermoformed socket and sets grommets along both edges.

  2. 02

    Lace

    Laces cross the slot over a breathable panel. Any shoelace works as a spare.

  3. 03

    Adjust

    When the limb swells or shrinks, the wearer tightens or loosens the laces. No extra appointment needed.

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