Xtremity

About Xtremity

Xtremity, legally known as Medical Creations Inc., is a medical device company focused on advancing prosthetic socket technology. Founded in 2017 by a group of humanitarians and inventor Mark Joseph, the company's origins are rooted in experiences from medical missions in developing nations, which highlighted the need for more accessible prosthetic care. This mission-driven approach led to the development of their core product. In March 2024, Xtremity was acquired by WillowWood Global, a major manufacturer and distributor in the prosthetics industry, integrating Xtremity's technology into a broader portfolio of custom solutions.

The company's business model centers on the sale of its patented prosthetic socket systems to clinicians and prosthetists. Its flagship product is the XtremityTT® Socket System, designed for transtibial (below-the-knee) amputees. The system's unique selling proposition lies in its use of a proprietary, thermoformable carbon-reinforced polymer. This material allows a prosthetist to fabricate, fit, and adjust a definitive socket in about an hour, a significant reduction from the weeks it can take with traditional laminated carbon fiber sockets. This process involves heating a pre-molded socket "preform" and shaping it to the patient's residual limb, which can be done in-clinic with minimal equipment. The key benefit for patients is a reduction in appointments and a more comfortable, adaptable fit, as the socket can be easily heat-adjusted over time to accommodate changes in limb volume. For clinicians, it offers a faster, safer, and more efficient in-house fabrication process, eliminating the need for outside labs and reducing exposure to hazardous materials.

The company has secured significant funding to support its growth, including an $8.1 million Series B3 round in October 2022, which brought its total funding to $27.5 million at the time and was aimed at commercializing the XtremityTT system. The technology has undergone extensive testing, including a 38-patient clinical trial where 81% of users preferred the XtremityTT socket over their previous carbon fiber ones. The product has also been utilized in demanding environments, providing prosthetic solutions for amputees in Ukraine. The acquisition by WillowWood is expected to expand the market reach of Xtremity's technology.