Formula

Features
  • Posterior mount design provides ideal balance of flexibility and power

  • Long, carbon-composite pylon delivers lightweight, dynamic response

  • Full-split toe offers maximum multiaxial function

  • Rocker toe supports easy and smooth roll-over

  • Fully customizable—choose the pylon and separate heel spring best suited for your patient

  • STF technology enhances durability

Featured Specifications

Functional Level

K3, K4

Pylon Height (in.)

12 - 20

Patient Weight Maximum

330 lbs. (150 kg)

Weight

24 oz. (675 g)

Build Height

3 in. (76 mm)

Ordering Information

Order pylon based on patient weight Order heel spring based on desired stiffness Transfemoral or patients 6'2" (188 cm) or taller should move up one weight class for pylon and heel spring standard Posterior Mounting Bracket is optional


Size Patient Weight SKU

Formula Pylon

Pylon Only 100 lbs. (45 kg) - 129 lbs. (58 kg) 178-110-2A

Formula Pylon

Pylon Only 130 lbs. (59 kg) - 159 lbs. (72 kg) 178-110-A

Formula Pylon

Pylon Only 160 lbs. (73 kg) - 189 lbs. (85 kg) 178-110-B

Formula Pylon

Pylon Only 190 lbs. (86 kg) - 219 lbs. (99 kg) 178-110-C

Formula Pylon

Pylon Only 220 lbs. (100 kg) - 249 lbs. (113 kg) 178-110-D

Formula Pylon

Pylon Only 250 lbs. (114 kg) - 289 lbs. (131 kg) 178-110-E

Formula Pylon

Pylon Only 290 lbs. (132 kg) - 330 lbs. (150 kg) 178-110-F

Formula Heel Spring

Heel Spring Softer 130 lbs. (59 kg) - 159 lbs. (72 kg) 178-110-5

Formula Heel Spring

Heel Spring Softer 160 lbs. (73 kg) - 189 lbs. (85 kg) 178-110-6

Formula Heel Spring

Heel Spring Softer 190 lbs. (86 kg) - 219 lbs. (99 kg) 178-110-7

Formula Heel Spring

Heel Spring Softer 220 lbs. (100 kg) - 249 lbs. (113 kg) 178-110-8

Formula Heel Spring

Heel Spring Softer 250 lbs. (114 kg) - 289 lbs. (131 kg) 178-110-9

Formula Heel Spring

Heel Spring Softer 290 lbs. (132 kg) - 330 lbs. (150 kg) 178-110-10

Formula Heel Spring

Heel Spring Standard 100 lbs. (45 kg) - 129 lbs. (58 kg) 178-110-5

Formula Heel Spring

Heel Spring Standard 130 lbs. (59 kg) - 159 lbs. (72 kg) 178-110-6

Formula Heel Spring

Heel Spring Standard 160 lbs. (73 kg) - 189 lbs. (85 kg) 178-110-7

Formula Heel Spring

Heel Spring Standard 190 lbs. (86 kg) - 219 lbs. (99 kg) 178-110-8

Formula Heel Spring

Heel Spring Standard 220 lbs. (100 kg) - 249 lbs. (113 kg) 178-110-9

Formula Heel Spring

Heel Spring Standard 250 lbs. (114 kg) - 289 lbs. (131 kg) 178-110-10

Formula Heel Spring

Heel Spring Standard 290 lbs. (132 kg) - 330 lbs. (150 kg) 178-110-11

Formula Heel Spring

Heel Spring Stiffer 100 lbs. (45 kg) - 129 lbs. (58 kg) 178-110-6

Formula Heel Spring

Heel Spring Stiffer 130 lbs. (59 kg) - 159 lbs. (72 kg) 178-110-7

Formula Heel Spring

Heel Spring Stiffer 160 lbs. (73 kg) - 189 lbs. (85 kg) 178-110-8

Formula Heel Spring

Heel Spring Stiffer 190 lbs. (86 kg) - 219 lbs. (99 kg) 178-110-9

Formula Heel Spring

Heel Spring Stiffer 220 lbs. (100 kg) - 249 lbs. (113 kg) 178-110-10

Formula Heel Spring

Heel Spring Stiffer 250 lbs. (114 kg) - 289 lbs. (131 kg) 178-110-11

Warranty

  • 2 years from date of patient fitting

The Formula has been designed and manufactured for specific patient weights. Failure to follow the weight guidelines and/or overload conditions caused by the patient, such as heavy lifting, high impact sports, or abusive activities, that would otherwise damage the natural limb, may void the warranty.

Additional Specifications

Patient Weight Minimum: 100 lbs. (45 kg)

Resources

Stay up to date with new products and accessories.

Adjustable Alignment Bracket

The Adjustable Alignment Bracket is designed to assist in the fitting and alignment of posteriorly mounted feet. The bracket is for in-clinic fitting only — it is not a permanent mounting solution, but rather a fitting tool. The bracket is compatible with the Formula and AllPro Posterior Mount feet.
Maximum Patient Weight SKU
Adjustable Alignment Bracket 330 lbs. (150 kg) 180-10-4000

Posterior Mounting Bracket

The Posterior Mounting Bracket is designed for use with posteriorly mounted feet to ease the fabrication process for adjustments and socket replacements. Once correct alignment has been determined using the Adjustable Alignment tool, the foot can be mounted using the Posterior Mounting Bracket. Specifications refer to adult brackets
Maximum Patient Weight SKU
Posterior Mounting Bracket 330 lbs. (150 kg) 180-10-2010

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