Single Axis Foot


Constructed of strong, lightweight composites and an advanced design, WillowWood offers the most progressive Single Axis Foot available. Ten to twenty percent lighter than conventional Single Axis Feet, this low activity model features a unisex, lifelike, water-resistant cosmesis and interchangeable anterior and posterior bumpers in three durometers. Available with a molded-in titanium pyramid.

Note:  Current lead time one week. Please contact customer service for delivery date.

Product Highlights:
  • Low Activity (U.S. Levels 1 & 2)
  • Interchangeable Anterior and Posterior Bumpers (medium sold with kit; soft and firm durometers are available separately)
  • Lightweight and Inexpensive
  • Molded-in Titanium Pyramid
  • Single Axis Foot Assembly Ships
Weight Endoskeletal Version:
Foot only: 451 g (.99 lb)*
Assembly: 571 g (1.27 lb)**
Patient Weight Limit 250 lb (115 kg)***
Heel Height 3/4” (18 mm)
3/8” (10 mm)
Available Sizes 22 to 31 cm
Toe Resistance Low, Regular, High
Build Height****
8.13 cm for 3/8″ heel with Endoskeletal Single-Axis Ankle installed
7.36 cm for 3/4″ heel with Endoskeletal Single-Axis Ankle installed
Cosmesis Unisex, Lifelike in Buff, Tan or Medium Brown
U.S. Warranty  12 months from date of patient fitting

NOTE for Endoskeletal Single Axis Foot (SAF) only: No credit will be issued after 45 days from order date. Exceptions will only be made for warranty returns due to product failures.

The warranty period for the Single Axis Foot Assembly (SAA) is unchanged.

U.S. L-Code Suggestion L5974

* Based on size 26 cm foot.
**Based on size 26 cm foot, ankle, pin, bumpers.
*** Body weight plus any loads normally or routinely carried cannot exceed this weight limit.
**** Build height measurements taken for a size 26 cm foot with WillowWood components. Measurements will vary if using non-WillowWood components.

Bumper Selection Guidelines

To order a complete Single Axis Foot Assembly, please select the size and side of the foot, color, toe resistance, and heel height. The Single Axis Foot Assembly will ship pre-assembled.

The Single Axis Foot may also be purchased individually without the ankle or bumpers. If ordering the foot only, please provide the size, side, color, toe resistance and heel height only.  

SAA-26LB-2L-MM Single Axis Foot SAMPLE Part Number
Name Code SAA SAA = Single Axis Foot Assembly
SAF = Endoskeletal Single Axis Foot
Size of Foot 26 22 to 31 cm
Side of Foot L L = Left
R = Right
Color B B = Buff
M = Medium Brown
T = Tan
Toe Resistance 2 2 = Low
3 = Regular
4 = High
Heel Height L L = Low 10 mm (3/8″)
M = Medium 18 mm (3/4″)
Anterior Bumper* M M = Medium (Black)
Posterior Bumper*
M M = Medium (Green)

Single Axis Foot Instructions
Single Axis Foot Instructions, Spanish

Fasteners & Torque
M5 x 10 Capscrew   5 ft-lbs/7 Nm
Related products:
Single Axis Bumpers
SAF-00128 SA Anterior Deflection Bumper, Soft (blue)
SAF-00132 SA Anterior Deflection Bumper, Medium (black)
SAF-00134 SA Anterior Deflection Bumper, Firm (white)
SAF-00140 SA Posterior Deflection Bumper, Soft (yellow)
SAF-00142 SA Posterior Deflection Bumper, Medium (green)
SAF-00144 SA Posterior Deflection Bumper, Firm (red)
SAF-00130 Set of 6 – SA Anterior & Posterior Deflection Bumpers
Endoskeletal Ankle
SAF-00100 Endoskeletal SA Ankle
Replacement Parts
SAF-00120 SA Ankle Joint Bushing, pair
SAF-00121 SA Ankle Pin Retaining Screw
SAF-00122 SA Ankle Pin Snap Ring (2)
SAF-00125 SA Ankle Pin
SAF-00126 SA Pin Hole Plug, pair

Instructional Video: Single Axis Foot
See how to assemble and adjust a Single Axis Foot.

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