Joint motion quality in vibroacoustic signal analysis for patients with patellofemoral joint disorders
نویسندگان
چکیده
BACKGROUND Chondromalacia, lateral patellar compression syndrome and osteoarthritis are common patellofemoral joint disorders leading to functional and/or structural disturbances in articular surfaces. The objective of the study was to evaluate their impact on joint motion quality via the vibroacoustic signal generated during joint movement analysis. METHODS Seventy-three patients (30 with chondromalacia, 21 with lateral patellar compression syndrome, and 22 with osteoarthritis) and 32 healthy controls were tested during flexion/extension knee motion for vibroacoustic signals using an acceleration sensor. Estimated parameters: variation of mean square (VMS), difference between mean of four maximum and mean of four minimum values (R4), power spectral density for frequency of 50-250 Hz (P1) and 250-450 Hz (P2) were analyzed. RESULTS Vibroacoustic signals recorded for particular disorders were characterized by significantly higher values of parameters in comparison to the control group. Moreover, differences were found among the various types of patellofemoral joint disturbances. Chondromalacia and osteoarthritis groups showed differences in all parameters examined. In addition, osteoarthritis patients exhibited differences in VMS, P1 and P2 values in comparison to lateral patellar compression syndrome patients. However, only the value of R4 was found to differ between knees with lateral patellar compression syndrome and those with chondromalacia. CONCLUSION Our results suggest that particular disorders are characterized by specific vibroacoustic patterns of waveforms as well as values of analyzed parameters.
منابع مشابه
Distal Approaches in Patellofemoral Pain: A Systematic Review, Part I
Purpose: Increased patellofemoral joint reaction force (PFJRF) is the main cause of patellofemoral pain syndrome (PFP). Foot pronation causes faulty joint coupling of the lower limb and increases the PFJRF. Therefore, the aim of systematic review is effect of the distal interventions on the clinical symptoms and kinematic of PFP patients. Methods: The search strategy was carried out from Goo...
متن کاملAge-Related Impairment of Quality of Joint Motion in Vibroarthrographic Signal Analysis
Aging is associated with degenerative changes in articular surfaces leading to quantitative and qualitative impairment of joint motion. Therefore, the aim of this study is to evaluate an age-related quality of the patellofemoral joint (PFJ) motion in the vibroarthrographic (VAG) signal analysis. Two hundred and twenty individuals were enrolled in this study and divided into five groups accordin...
متن کاملGenerating the Visual Biofeedback Signals Applicable to Reduction of Wrist Spasticity: A Pilot Study on Stroke Patients
Introduction: Application of biofeedback techniques in rehabilitation has turned into an exciting research area during the recent decade. Providing an appropriate visual or auditory biofeedback signal is the most critical requirement of a biofeedback technique. In this regard, changes in Surface Electromyography (SEMG) signals during wrist movement can be used to generate an indictable visual b...
متن کاملThe Influence of Tibial Tuberosity-trochlear Groove Distance on Development of Patellofemoral Pain Syndrome
Background: Tibial tuberosity-trochlear groove distance (TT-TGD) measurements play a decisive role in evaluatingpatellofemoral joint disorders. However, the prevalence of pathological TT-TGD among patients with patellofemoralpain remains unclear. The purpose of this study was to compare the size of TT-TGD among patients with patellofemoralpain syndrome (PFPS) and those with no history of patell...
متن کامل