What Xtremity does

Xtremity (legally Medical Creations Inc.) is a privately-held medical device company founded in 2017 and headquartered in Denver, Colorado. The company develops and sells the XtremityTT Socket System, a thermoformable transtibial (below-knee) prosthetic socket platform that uses proprietary carbon-reinforced polymer injection molding technology. Its core innovation is heat-adjustability — the socket can be spot-heated for fitting modifications in approximately 10 minutes throughout the prosthesis's lifetime, and fabricated in-clinic in 60-75 minutes using the Benchtop Heating Unit. The system includes the Preform Socket (available in 7 sizes and standard/conical profiles), modular Suspension Systems (pin-lock, suction, and vacuum options), the Benchtop Heating Unit, Practitioner Kits, and the newer XtremityTT FLEX flexible inner socket launched in July 2023. All componentry meets ISO 10328 standards, and the product has been validated through 30+ million patient steps and an IRB-approved 38-patient clinical trial in which 81% of patients preferred XtremityTT over carbon fiber laminated sockets.

Xtremity generates revenue through direct hardware sales of its Socket System products to Orthotics and Prosthetics (O&P) clinics and prosthetists in the United States. Pricing is quote-based, with customers required to contact regional account managers, and is positioned at a premium to in-house carbon fiber lamination. Customers must register and complete certification through Xtremity Academy before purchasing. Distribution occurs via a national sales team of regional account managers covering specific US territories, complemented by a distribution partnership with WillowWood Global LLC. The company also participates in humanitarian initiatives, including a partnership with the Protez Foundation to support prosthetic care for Ukrainian soldiers affected by the war.

As of October 2022, Xtremity had raised $27.5 million in total private venture funding across its Series B round (which included a $8.1 million Series B3 tranche). The company operates with a small team (1-10 employees) and is led by industry veterans including CEO Maynard Carkhuff (formerly CEO of Flex-Foot/OSSUR and Freedom Innovations/ottobock) and Chairman Bob Kerrey (former Nebraska Governor/Senator and 50+ year prosthetic user). The company serves both civilian and veteran amputee populations, with particular relevance to diabetes and vascular disease patients, rural clinics, and Veterans Administration medical centers.

Name

Xtremity

Legal name

Medical Creations Inc.

Website

https://xtremity.com

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

1–10 employees

Short description

Xtremity develops and sells the XtremityTT Socket System, a heat-adjustable thermoformable transtibial prosthetic socket using proprietary carbon-reinforced polymer technology. The company sells directly to O&P clinics and prosthetists across the United States through regional sales managers and a WillowWood Global LLC distribution partnership.

Ownership category

akta.pro rank

Product category

Prosthetic Sockets

NAICS

Surgical Appliance and Supplies Manufacturing (339113)

SIC

Orthopedic, Prosthetic & Surgical Appliances & Supplies (3842)

akta.pro primary industry

Prosthetic Components & Rehabilitation Accessories (Liners, Feet, Knees, Sockets) (HLAHAMAD)

akta.pro secondary industry

Limb Prosthetics (Upper/Lower Extremity Prosthetic Systems) (HLAHAEAH)

Keywords

• Prosthetic socket devices
• Transtibial prosthetic systems
• Orthotics and prosthetics
• Medical device manufacturing
• Heat-adjustable sockets

Headquarters

HQ city

Denver

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Prosthetic Socket Systems: Xtremity generates revenue through the sale of its XtremityTT Socket System products including preform sockets, suspension systems, heating units, and practitioner kits. Products are sold to O&P clinics and prosthetists who then provide them to patients. Pricing is quote-based and not publicly disclosed.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Xtremity develops and manufactures the XtremityTT Socket System, a heat-adjustable thermoformable definitive transtibial (below-the-knee) prosthetic socket built on proprietary carbon-reinforced polymer injection molding. The platform includes preform sockets, modular suspension systems (pin-lock, suction, vacuum), a Benchtop Heating Unit for in-clinic fabrication, and the XtremityTT FLEX flexible inner socket, enabling O&P clinicians to fabricate and fit a definitive prosthesis in approximately 60-75 minutes with ongoing heat adjustments over the life of the device.

Product overview

Xtremity offers the XtremityTT Socket System, a unified thermoformable transtibial definitive socket platform. The core product is the XtremityTT Preform Socket (carbon-infused polymer socket preform), which works with modular XtremityTT Suspension Systems (pin-lock, suction, vacuum options). The system is supported by the XtremityTT Benchtop Heating Unit for uniform preform heating, and practitioners use the XtremityTT Practitioner Kit for fabrication and assembly. The XtremityTT FLEX flexible inner socket is a complementary product that increases patient comfort and is compatible with the socket system. Startup Kits bundle the heating unit, socket kits, and suspension systems together for new clinic onboarding.

Differentiator

Problem solved

Functional benefit

Products and services

• XtremityTT Preform Socket Carbon-infused polymer socket preform injection molded with a distal base connected to a modular suspension system and alignment base. Available in 7 sizes with standard and conical profiles, it can be thermoformed over a positive limb model and heat-adjusted over the life of the prosthesis to accommodate evolving patient limb needs. Designed for O&P clinics and prosthetists to fabricate definitive transtibial sockets in approximately 60-75 minutes in-clinic.
• XtremityTT Suspension Systems Modular and interchangeable suspension systems offering pin-lock, suction, and vacuum options. Each system fits snugly into the distal base of the socket and is ordered separately, allowing prosthetists to swap suspension type without remaking the socket. Provides up to 16mm of slide and 30 degrees of rotation adjustment.
• XtremityTT FLEX Flexible Inner Socket Flexible inner socket providing uniform wall thickness, easy fabrication with minimal lab space and equipment, and reduced material waste. Compatible with the XtremityTT Socket System and other traditional laminated prosthetic socket devices, with a proprietary polymer engineered for improved formability, reduced friction, minimized shrinkage, and increased durability.
• XtremityTT Benchtop Heating Unit Specially engineered heating unit for uniform heating of the XtremityTT preform with a minimal footprint in lab space. Features two preprogrammed settings for both the XtremityTT Socket and XtremityTT FLEX, enabling in-clinic socket fabrication without large ovens or vented grinding rooms.
• XtremityTT Startup Kit Complete starter packages available in three configurations (XTSK, XTSK2, XTSK3) that include a Benchtop Heating Unit, socket kits with alignment bases, and suspension systems. Designed for new O&P clinics adopting the Xtremity system.
• XtremityTT Practitioner Kit Toolkit containing all tools needed for fabrication and assembly of the XtremityTT Socket System, including insulated gloves, sealing sleeves, wrenches, a rotary cutting stylus, silicone cartridge, mixer tips, and an optional dispensing gun.

Quantifiable outcome

• 81% of patients preferred XtremityTT over their carbon fiber laminated socket in a 38-patient IRB clinical trial
• +5 more outcomes

Segments5 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Two partnerships are on record, tiered core.

• Protez FoundationcoreStrategic or Co-development PartnerProtez Foundation is actively addressing the need for prosthetic devices and amputee care for Ukrainian soldiers affected by the war. Xtremity has supported various Ukrainian charities including Protez Foundation, which brings soldiers to the U.S. for treatment, trains Ukrainian prosthetists, and establishes prosthetic clinics in Ukraine.
• WillowWood Global LLCcoreChannel Partner/ Reseller/ DistributorWillowWood Global LLC is the parent company and distribution partner for Xtremity products. Regional Account Managers can be contacted through WillowWood. Contact email: [email protected]. Products are distributed under the WillowWood brand association.

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Össur: Global leader in prosthetics and orthotics with the broadest portfolio of lower-limb prosthetic components, sockets, and liners. Directly comparable as Xtremity's primary large-scale competitor in the US transtibial socket market, and a potential strategic acquirer.
• Ottobock: German-founded global prosthetics incumbent with deep US O&P clinic relationships through its acquired Freedom Innovations business. Competes with Xtremity across lower-limb prosthetic sockets and components.
• Hanger, Inc. Largest US O&P clinic operator providing patient care and distributing prosthetic devices. Comparable as a major US O&P channel partner/customer that evaluates and adopts prosthetic socket technologies like XtremityTT.

Direct peers

• WillowWood Global LLC: US-based prosthetics manufacturer and Xtremity's distribution partner that produces its own line of prosthetic liners, sockets, and components. Directly comparable product portfolio and overlapping US O&P clinic customer base.
• Fillauer: Prosthetic component manufacturer offering a broad range of lower-limb prosthetic feet, knees, and socket-related products. Comparable as a mid-sized US-headquartered competitor serving the same O&P clinician channel.
• College Park Industries: US manufacturer of prosthetic feet, knees, and socket interface components sold through O&P clinicians. Comparable mid-sized competitor in the lower-limb prosthetic component market.
• ALPS (Advanced Limb Prosthetic Solutions): Manufacturer of prosthetic liners, socks, and suspension products used in lower-limb socket systems. Comparable as a component-level competitor with overlapping O&P clinic relationships and similar go-to-market motion.
• SPS (Syncor Prosthetic Solutions): Specialty distributor and manufacturer serving US O&P clinics with prosthetic components and central-fabrication services. Comparable as a US distribution-focused peer competing for the same O&P clinic wallet share.

Emerging players

• Touch Bionics (Össur): Upper-limb prosthetic specialist now under Össur, with prior senior leadership alumni in Xtremity's team. Comparable as a category specialist that pioneered a workflow-disrupting prosthetic platform.
• UNYQ: Custom 3D-printed prosthetic covers and socket interfaces. Comparable as an emerging technology player in custom prosthetic socket solutions; Xtremity VP Sean Smith previously worked at UNYQ.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCDzRw8uXJlPdzPpF_Wviedg
• Facebookfacebook.com/xtremityTT
• LinkedInlinkedin.com/company/xtremity
• Instagraminstagram.com/xtremitytt

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds2 records

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Xtremity