Gs. Lausten et Cc. Arnoldi, BLOOD PERFUSION UNEVEN IN FEMORAL-HEAD OSTEONECROSIS - DOPPLER FLOWMETRY AND INTRAOSSEOUS PRESSURE IN 12 CASES, Acta orthopaedica Scandinavica, 64(5), 1993, pp. 533-536
We measured the microvascular regional perfusion in 12 hips with non-t
raumatic osteonecrosis of the femoral head, using laser Doppler flowme
try (LDF). Simultaneously, the intraosseous pressure (IOP) was measure
d in the femoral head. For comparison, the same 2 parameters were meas
ured in 6 normal femoral heads during surgery of the contralateral hip
. In osteonecrosis, the regional blood cell flux in the intertrochante
ric area was 165 mV, at the rim of the lesion 430 mV, and in the necro
tic lesion 35 mV. In the same areas, the IOP was 38 mmHg, 61 mmHg and
55 mmHg. In the normal hips, the LDF signal was 221 mV and 224 mV, and
the IOP was 21 mmHg and 19 mmHg intertrochanterically and in the femo
ral head, respectively. We conclude that the microvascular blood perfu
sion is uneven in an osteonecrotic head.