Structurally, all leg products are divided into femoral and tibial. The former are designed for amputations above the knee, the latter – below.
Hip prostheses for swimming are structurally more complicated for two reasons: first, the design needs to provide for a knee joint that carries high loads and has a rather complex anatomy. Secondly, its attachment is more complicated than that of a lower leg prosthesis.The situation is even more complicated if you need a hip prosthesis for swimming, because the knee joint must be reliably protected from water.
Otto Bock solves this issue with an innovative integrated locking mechanism used in the Aqua knee joints. The mechanism allows the joint to be manually locked for use in water or humid environments, providing greater support reliability and complete protection against moisture. Once the joint is unlocked, the built-in hydraulic system allows for adjustment of its movement so that the prosthesis can be used for walking.
Prosthetic shin for swimming is simpler, as there is no need to build in a knee joint, and the ankle can be hingeless. The prosthesis is made of laminated plastic, and the receiving sleeve is lined with foam or silicone, which exactly follows the anatomical structure of the stump for a perfect fit. The prosthesis has lateral kingston holes that allow water to flow freely in and out of them. On the one hand, the cosmetic shell provides an aesthetic appearance, and on the other hand, it protects the prosthesis material from damage. It can be easily replaced and is made in the form of a corrugated profile on the sole to provide an anti-slip effect.
Manufacturers are trying to produce bathing prostheses that are versatile and can be used in everyday practice. However, some types of prostheses are undesirable for everyday use due to increased wear and tear. They are intended for professional swimmers. The universal option is suitable for most users.
After selection, assembly, and fitting, the user goes through a process of rehabilitation and adaptation, relearning all the swimming skills. But with proper training, people can easily return to their previous level of activity.