Preliminary study of optimal measurement location on vibroarthrography for classification of patients with knee osteoarthritis

Abstract

[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.

Vibroarthrography, arthrophonography — methods for non-invasive detection of the knee cartilage damage

“…Для записи ВАГ акселерометры фиксируются на разных костных выступах вокруг колена [10], либо устанавливаются на поверхности кожи наружного мыщелка большеберцовой кости, а потенциометр, регистрирующий движения, -на медиальной стороне коленного сустава либо по центру надколенника [11]. В качестве варианта АФГ используют систему измерения, состоящую из 4 стетоскопов и микрофонов, фиксируемых на медиальной и латеральной частях коленного сустава, в центре надколенника на большеберцовой кости [29].…”

“…В одном из исследований пациенты находились на жестком стуле или столе, выполняя цикл сгибательно-разгибательных движений со скоростью 4 повторения за 2 сек [10,11,29], либо вставали и садились с временным циклом 2 сек. Анализировались звуки от 100 до 2000 Гц.…”

“…Анализировались звуки от 100 до 2000 Гц. Звуки от 0 до 100 Гц, издаваемые мышцами, подвергались исключению методом фильтрации [29]. Обнаружено, что изменение процедуры исследования может влиять на величину некоторых параметров вибрационного сигнала.…”

A Pilot Study to Assess the Reliability of Sensing Joint Acoustic Emissions of the Wrist

“…Recent work has demonstrated the use of inexpensive accelerometers to noninvasively aid in joint health assessment by sensing the vibration on the surface of the skin—termed “vibroarthrographic” signals [ 5 ], or more commonly, “joint acoustic emissions” (JAEs) or “joint sounds”—associated with the articulation of the underlying joint [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ]. This technique may lead to improved diagnosis and treatment tracking of joint injuries and chronic joint conditions with improved convenience and cost compared to the current standard.…”

“…However, these works have focused primarily on the knee because of the prevalence of joint injuries and chronic joint disorders afflicting the knee due to the high loads and constant use it sustains. Since the wrist joint is also commonly afflicted with joint injuries and chronic joint disorders, it is necessary to assess the reliability of using JAEs to aid in wrist joint health assessment as explored around the knee [ 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 ]. To demonstrate JAE recording reliability, JAEs from healthy volunteers can be used [ 19 ].…”