The rehabilitative functional hinged knee brace is designed for a diverse range of users who experience knee instability or pain due to injury, surgery, or degenerative conditions. Athletes, in particular, are a primary group that benefits from these braces, as they are prone to severe ligament injuries such as anterior cruciate ligament (ACL) and medial collateral ligament (MCL) tears. These injuries often occur during high-impact sports or activities requiring rapid changes in direction. Athletes who have undergone ACL reconstructive surgery or experience knee instability due to ligament damage can use these braces to stabilize the joint and prevent further injury. Functional knee braces support continued participation in athletic activities by enhancing knee stability, reducing pain, and promoting confidence (Beynnon et al., 1992; Karam et al., 2011).

In addition to athletes, the brace is highly beneficial for individuals suffering from degenerative conditions like osteoarthritis (OA). OA is ubiquitous among the elderly, affecting over 16% of those aged 45 and older in the USA (Jordan et al., 2009). The knee brace is intended for users with mild to severe knee OA who experience pain and difficulty with everyday tasks like walking, climbing stairs, or standing for extended periods. The functional knee brace offers a non-invasive treatment option for these individuals to improve joint stability, reduce pain, and enhance mobility without surgery.

Post-surgical patients recovering from ligament reconstruction, particularly ACL grafts, also form a key user group for the brace. After ACL reconstructive surgery, functional knee braces are recommended to reduce strain on the graft and provide protection during rehabilitation (Wojtys et al., 1996). These patients require controlled movement during recovery to promote healing while preventing further damage. The brace allows for a gradual return to activity with confidence and support.

Overall, the intended user group encompasses athletes, the elderly, and post-surgical patients, benefiting from improved knee stability, pain reduction, and enhanced mobility during recovery or everyday activity. The knee brace is a versatile tool to meet the needs of a broad range of individuals dealing with knee instability due to injury or chronic conditions.