There are several kinds of prosthetic receiving cavity

The thigh prosthesis is composed of several parts such as the prosthetic foot, ankle joint, calf, knee joint, receiving cavity, suspension device. Due to the complexity of the structure of the thigh prosthesis, can use different acceptance cavity and knee, ankle and other joints, so there are more varieties of prosthesis.

1. According to the overall structure type

By and large can be divided into traditional thigh prosthesis and modern component thigh prosthesis, can be divided into shell thigh prosthesis and skeletal thigh prosthesis.

①Traditional thigh prosthesis: shell-type structure, the receiving cavity is conical insertion type, need to use the belt suspension. According to the acceptance cavity material, traditional thigh prosthesis mainly aluminum thigh prosthesis and leather thigh prosthesis. These prostheses are less expensive to produce, but their assembly technology is more outdated, and the fit of the receiving cavity is not reasonable, but also more bulky, so it has been basically eliminated, and is only made for a few patients with special needs.

② shell-type components of the thigh prosthesis: components of the thigh prosthesis in the 80's after the development of the initial shell-type prosthesis, the knee joint using a block structure. This kind of prosthesis adopts resin composite material vacuum molding acceptance cavity, comprehensive contact, the key part of the load-bearing; Knee, ankle, foot and its connectors using standard parts, easy to assemble, adjustment and maintenance. Acceptance of the mouth of the cavity according to the physiological and anatomical requirements of the production, load-bearing reasonable; acceptance of the cavity at the lower end of the exhaust valve, the use of the acceptance of the cavity and the residual limb of the negative pressure between the suspension of the prosthesis (also known as suction-type thigh prosthesis), without the use of belts and other suspension devices, easy to put on and take off. For the residual limb condition is too poor or the patient is not accustomed to wear suction type acceptance cavity, can also be made into incomplete contact (especially the end of the residual limb) acceptance cavity, and then add the belt for suspension.

③Skeletal component thigh prosthesis: in recent times, component prostheses are commonly used skeletal structure, that is, the standard components of the joints, connectors, supports in the form of an endoskeleton, plus decorative soft foam and knitted sockliner, the appearance of a more lifelike. With the continuous improvement of components such as knee joints to multi-functional, high-strength and lightweight, the performance of the prosthesis is also greatly improved.