(57) 0 For operations in the prone sitting position, a kneeling attachment has a lower-leg
platform (12) from which a pair of posts (24) project downwardly to rest against the
floor to support the lower portion of the patient's body while his or her upper body
is moved up or down relative to the buttocks by vertically moving the operating table.
After thus adjusting the attitude of the patient's backbone, the lower-leg platform
- (12) is locked, the posts (24) are retracted, and the operating table can be moved
to whatever height is most comfortable to the surgeon. The lower-leg platform (12)
of the kneeling attachment includes cushioning (13) which is formed with two longitudinal
channels (15) that conform to the lower legs of a patient A spacing between the lower-leg
platform and the foot of the operating table leaves the kneecaps substantially unsupported,
so that the patient's weight primarily rests on the tibial plateaus. The kneeling
attachment may include a buttocks support (40) which comprises a U-shaped yoke - (42),
the crosspiece of which carries a seat pad (43) and the arms of which carry elongated,
generally cylindrical cusions - (50). Each of these cusions (50) is formed with an
off-centre bore (52) so that rotation of the cushions accommodates patients of differing
hip sizes.
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