The angle-stable plates for treating fractures of the upper and lower arm feature a sherical thread on the screw head and in the hole plate, ensuring that the plate stays at a stable angle. This means that the plate is fixed permanently and retains a firm hold even in osteoporotic bone. This property enables the physician to undertake exercises with the patient immediately after the operation, thereby shortening the rehabilitation period.

What is more, the spherical shape of the thread holes makes it possible to use the more inexpensive standard screws. In this way, aap is also seeking to take into account the growing cost pressure faced by the health system.