[An assessment of tissue microcirculation in patients with aseptic femur head necrosis in rheumatoid arthritis].

Tissue microcirculation above the area of hip joint projection was investigated by 133Xe clearance from the tissue depot and laser-Doppler flowmetry in 38 rheumatoid arthritis patients with complicating aseptic necrosis in 69 heads of the femur. The methods proved reliable in diagnosis of the above microcirculatory disorders and in staging osteonecrosis. Combined use of the procedures was found effective in detection of early circulatory disorders and early aseptic necrosis.