Video summary

Prosthetic Socks and Shoe Selection - Prosthetic Training: Episode 3

Main summary

Key takeaways

Educational

Main ideas / lessons

  • Prosthetic socks are “simple” but vitally important because a prosthetic socket is made to fit the patient on the day it was made, yet the residual limb size/shape changes over time (e.g., tapering/shrinking, daily swelling changes).
  • Socks are the primary tool for daily fit adjustment: since the socket is fixed while the body is dynamic, sock thickness/ply compensates for day-to-day volume differences.
  • Proper sock regulation prevents discomfort and safety issues that can occur quickly if fit is lost.
  • Not all shoes work well with a prosthesis. Shoe choice affects stability, gait mechanics, and comfort.
  • The key goal in shoes is to maintain the prosthetic foot/ankle alignment and provide a stable, shock-absorbing base with an appropriate heel-to-toe drop.
  • Changing shoes can destabilize gait learning, especially early in prosthetic training; stability and consistency matter.
  • A “vertical pylon” check is used as a practical method to evaluate whether a shoe setup (or shoe change) keeps the prosthetic aligned for safe walking.
  • Adjustable ankle/foot systems can accommodate different shoe heights, but may trade off some energy return/stability compared with non-articulated systems.

Methodology / instruction details

A) Socks: how to manage and why

  • Understand daily residual limb changes

    • Socket fit is made on the fabrication day.
    • As the patient becomes more functional, the residual limb may taper/shrink and change shape.
    • Daily factors (example given: salt leading to swelling) can require removing socks to regain fit.

  • Use socks to fill the “void” and adapt fit

    • Socks adjust the fit of a fixed socket to match the limb’s current size/volume.

  • Know the sock “ply” system (thickness)

    • Socks come in different thicknesses/plies (commonly referenced: one-ply and three-ply, plus others).
    • A chart may use colors (e.g., red/gray/green/blue) to indicate thickness.
    • Critical concept: ply count matters more than the number of socks
      • Example idea: three one-ply socks ≠ three three-ply socks (the latter provides much more volume).
    • Goal: use the fewest socks possible to achieve the needed ply thickness (avoid stacking unnecessarily).

  • Always carry sock thickness options

    • Instruction: no amputee should leave home without at least:
      • a one-ply and a three-ply sock
    • Keep them accessible (e.g., pocket, glove box, multiple storage spots).
    • Purpose: if fit begins to fail during the day, you can adjust sock thickness to stay comfortable and safe.

B) Shoes: how to select for prosthetic walking

  • Choose shoes for the “job,” not just any shoe

    • Many people assume their prosthetic will work with any shoe; the video argues this is incorrect.

  • Common recommended category: cross-trainer style

    • Look for the right heel-to-toe drop.
    • Prosthetic feet are described as often set around ~3/8 inch drop (heel-to-toe); cross trainers are “in that family.”
    • Desired features:
      • Wide and stable base
      • Shock-absorbing heel
      • Upper that secures the prosthetic foot (e.g., lace or Velcro) to prevent slippage

  • Practice note: shoe changes require training/assessment

    • Patients may want to switch shoes before therapy; the video says this is difficult without being trained/assessed for that specific shoe’s fit and effects.

C) Review of specific shoe types (what to watch for)

  • Cross trainers / sneakers (often favorable)

    • Different styles may work; base design and stability matter.
    • Also beneficial for the contralateral (other) limb because it can provide stability and shock absorption.
    • Inserts can be used to improve base support.

  • Dress shoes

    • The video says it can be possible if there are “tennis-shoe-like” soles (rubberized / Vibram-type).
    • Check:
      • Low heel-to-toe relationship (as level as possible)
      • Stable upper that holds the prosthetic foot in place
      • Wide enough toe box on the other foot to avoid compression

  • Rigid-soled, high-heeled shoes (often problematic)

    • Example problem described:
      • Thick/rigid heel can tip the prosthesis forward
      • Can cause a clunky gait and make the heel slip out to the side
    • Recommendation: avoid rigid-soled, high-heeled shoes because they don’t fit well mechanically.

  • Docksider / very low-drop shoes

    • Can work, but may have limited heel-to-toe drop.
    • Often requires wedging underneath the heel to raise/level the prosthetic foot for walking.

  • Boots

    • Problems described:
      • No side zippers can make the prosthetic foot very hard or impossible to insert.
      • Large heel-to-toe relationship can tip everything forward and destabilize.
      • Weight: heavier boot increases pendulum effect at the end of the prosthesis.
    • If using boots, check:
      • Boot should zip down the side for insertion.
      • Heel-to-toe relationship should be as low/level as possible for better alignment (vertical pylon).

D) “Vertical pylon” alignment check (core biomechanics instruction)

  • Why it matters

    • A vertical pylon indicates balance and safe setup.

  • How to check

    • After putting a new shoe on the prosthetic foot:
      • Set the foot on a table.
      • Confirm the pylon is vertical.

  • Interpretation and actions

    • If pylon leans backward (posterior):
      • Device becomes unstable and may cause fall backward risk.
    • If pylon leans forward:
      • Knee may want to buckle and the device may collapse.
    • If pylon is not vertical:
      • If leaning backward: add wedging under the heel to level it.
      • If using something like a high heel/boot causing forward lean: the video implies it’s often too destabilizing and not suitable.

E) Consistency after choosing shoes

  • Stay with a working shoe setup
    • Recommendation: for the first 2–3 months (when starting out), avoid changing shoes.
    • Reason:
      • Even a good shoe changes how the walk feels.
      • Aim to master walking control first.
    • Later, when more skilled, consider changes gradually.

F) Adjustable ankle/foot systems (tradeoffs)

  • Benefit

    • Adjustable ankle/foot can accommodate different heel heights with different shoes.

  • Negative

    • May provide less energy return and/or stability than a non-articulated ankle-foot.

  • Decision

    • Patient must choose based on needs and the specific shoe/prosthesis combination.

Speakers / sources featured

  • Primary speaker: An unidentified presenter/instructor speaking throughout (no name given in the subtitles).
  • Video/organization source mentioned: MissionGait (channel referenced: YouTube.com/MissionGait).

Original video