[Assessment of limp in patients with coxarthrosis--three-dimensional measurement of the pelvic rotation].

To assess the gait characteristics of the patients with coxarthrosis objectively, the rotation of the pelvis during ambulation was measured on the frontal, sagittal and horizontal planes using 3 gas-rate-sensors(Rotational Angle Measurement System G-2210, Anima Inc., Tokyo). In the normal subjects, the waveforms of the rotational angle on the frontal plane were symmetrical, highly reproducible and had 2 peaks. In contrast, the waveforms of the patients were asymmetrical and poorly reproducible. This was shown objectively using Fourier transform technique. The mean rotational angle of the patients was smaller than that of the normal subjects on the frontal plane, and larger on the sagittal plane. We can distinguish the patients from the normal subjects by observation of the waveform on the frontal plane and the ratio of the rotational angle on the sagittal plane to that on the frontal plane.

The sliding venous flap for covering skin defects with poor blood supply on the lateral aspects of fingers.

For the treatment of skin defects with poor blood supply on the lateral aspects of the fingers, particularly the radial side of the index finger and the ulnar side of the little finger which have been difficult to cover conventionally, we have developed the sliding venous flap. The flap can be moved by using the "sag" obtained from the dissected dorsal veins of the same finger. We have applied this technique in six cases with excellent results. The indications are limited to cases with only slight crushing of the dorsum of the finger. We consider this technique safe and effective in covering skin defects with poor blood supply on the lateral aspects of fingers.