| 摘要 |
An exemplary embodiment providing one or more improvements includes cushions which support a patient's thighs and lower legs and which have cut out areas in the areas of the patient's popliteal fossa at the back of the patient's knees. By avoiding contact with the popliteal fossa complications such as compression of the patient's nerves and blood vessels are avoided. This prevents the harmful effects of pressure on the popliteal fossa in loss of sensation in the lower legs and feet, and occlusion of blood and lymph vessels in the lower legs. A number of embodiment cushions are disclosed, some embodiments comprised of a relatively firm core foam material with a relatively softer viscoelastic foam in areas which are in contact with the patient's skin.
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