Anti-MDA5 antibodies are prevalent and closely associated with ILD in our series compared with other countries. There was no apparent difference in clinical features associated with other MSAs among races.
Leukemia-associated osteoarthralgia is often indistinguishable from rheumatic diseases by imaging and laboratory findings and should be confirmed by bone marrow examination.
[Purpose] The aims of the present study were to investigate the most suitable location
for vibroarthrography measurements of the knee joint to distinguish a healthy knee from
knee osteoarthritis using Wavelet transform analysis. [Subjects and Methods] Participants
were 16 healthy females and 17 females with severe knee osteoarthritis. Vibroarthrography
signals were measured on the medial and lateral epicondyles, mid-patella, and tibia using
stethoscopes with a microphone while subjects stood up from a seated position. Frequency
and knee flexion angles at the peak wavelet coefficient were obtained. [Results] Peak
wavelet coefficients at the lateral condyle and tibia were significantly higher in
patients with knee osteoarthritis than in the control group. Knee joint angles at the peak
wavelet coefficient were smaller (more extension) in the osteoarthritis group compared to
the control group. The area under the receiver operating characteristic curve on tibia
assessment with the frequency and knee flexion angles was higher than at the other
measurement locations (both area under the curve: 0.86). [Conclusion] The tibia is the
most suitable location for classifying knee osteoarthritis based on vibroarthrography
signals.
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