title: Electrical impedance spectroscopy and diagnosis of tendinitis.
abstract: There have been a number of studies that investigate the usefulness of bioelectric signals in diagnoses and treatment in the medical field. Tendinitis is a musculoskeletal disorder with a very high rate of occurrence. This study attempts to examine whether electrical impedance spectroscopy (EIS) can detect pathological changes in a tendon and find the exact location of the lesion. Experimental tendinitis was induced by injecting collagenase into one side of the patellar tendons in rabbits, while the other side was used as the control. After measuring the impedance in the tendinitis and intact tendon tissue, the dissipation factor was computed. The real component of impedance and the dissipation factor turned out to be lower in tendinitis than in intact tissues. Moreover, the tendinitis dissipation factor spectrum showed a clear difference from that of the intact tendon, indicating its usefulness as a tool for detecting the location of the lesion. Pathologic findings from the tissues that were obtained after measuring the impedance confirmed the presence of characteristics of tendinitis. In conclusion, EIS is a useful method for diagnosing tendinitis and detecting the lesion location in invasive treatment.
authors.affiliation: Department of Physical Medicine and Rehabilitation, College of Medicine, Dong-A University, Busan, Korea.
authors.forename: Kisung
authors.initials: K
authors.lastname: Yoon
authors.forename: Kyeong Woo
authors.initials: KW
authors.lastname: Lee
authors.forename: Sang Beom
authors.initials: SB
authors.lastname: Kim
authors.forename: Tai Ryoon
authors.initials: TR
authors.lastname: Han
authors.forename: Dong Keun
authors.initials: DK
authors.lastname: Jung
authors.forename: Mee Sook
authors.initials: MS
authors.lastname: Roh
authors.forename: Jong Hwa
authors.initials: JH
authors.lastname: Lee
mesh_terms: D000125:Achilles Tendon / Q000502:physiology; D000818:Animals; D017364:Collagenases; D017097:Electric Impedance; D017847:Patellar Ligament / Q000473:pathology / Q000502:physiology / Q000503:physiopathology; D011817:Rabbits; D013057:Spectrum Analysis / Q000379:methods*; D052256:Tendinopathy / Q000139:chemically induced / Q000175:diagnosis* / Q000503:physiopathology
chemical_list: D017364:Collagenases