Sports rehabilitation is a multifactorial and complex process that requires a team approach where professionals work together to bring the athlete or player to a safe and healthy return-to-sport (RTS).
The process of rehabilitating a sport injury is a complex and adaptive system, which is a term used in biological science to describe systems comprised of several components (i.e. multi-components in nature). These systems interact with each other and their environments and result in an emergent new pattern or behavior.
Recently, the complex systems concept has gained more and more interest in the field of sport science and human performance. It describes the occurrence of injury and the process of RTS decision. In the context of rehabilitation and RTS, all the factors (units) interacting with each other can include age, wellness, stress, history of previous injuries, etc. The system emerging from these interactions can lead to the emergence of other systems within systems (Rickles, Hawe, & Shiell, 2007) that can be categorized based on their characteristics like biomechanics, psychology, and physiology (Yung, et al., 2022).
An example of how these factors interact within the systems in a multilevel and hierarchical organization as it relates to RTS decision can be found below in Figure 1.
The process of RTS is very complex in nature, with a non-linear path that is characterized by the interaction of many factors (Putukian, 1998).
Yung, et al. (2022) identifies three primary domains to test and improve the quality of the RTS decision:
Figure 1. A multilevel system map with factors related to RTS decision in anterior cruciate ligament injury (image from Yung, et al., 2022)
They also suggest a four-step framework to check the quality of the decision-making process of RTS based on the following aspects (Figure 2):
Figure 2. Steps for evaluating a RTS decision (image from Yung, et al., 2022)
In methodological applications, plantar pressure mapping technology represents one of the best fits into the decision-making process for RTS.
The multifactorial nature of the data and information obtained by plantar pressure assessment in biomechanics, as well as the ability to analyze how the complexity of the foot interacts with the ground as an amplifier of the force and motion of the various segments above (knees, hips, spine, shoulders), makes the technology a fundamental support for practitioners and decision-makers involved in the RTS process.