Ultrasonic probe is useful for in vivo quantitative assessment of medial femoral condyle articular cartilage

Shimizu, Takashi; Wakitani, Shigeyuki; Tanaka, Yoshinari; Yonetani, Yasukazu; Shiozaki, Yoshiki; Shimizu, Katsuji; Horibe, Shuji

doi:10.1007/s00167-011-1500-6

Cited by 2 publications

(3 citation statements)

References 31 publications

(29 reference statements)

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“…The measure of maximum magnitude was found to be particularly useful for quantitative assessment of the medial femoral condyle articular cartilage, and their system was useful for diagnosis of degenerate cartilage at the early stage. 21 Our system is able to measure stiffness, surface roughness, and thickness of living human articular cartilage, and it was able to detect early degenerative changes in living cartilage in knee joints.…”

Section: Discussionmentioning

confidence: 99%

“…19 Schmitz et al 20 found that individuals who walked with a greater peak internal knee-extensor moment during gait had a cartilage structure that is generally considered beneficial in a healthy population. Shimizu et al 21 reported that their ultrasound measurement system offered potential for the detection of subtle change in cartilage. The measure of maximum magnitude was found to be particularly useful for quantitative assessment of the medial femoral condyle articular cartilage, and their system was useful for diagnosis of degenerate cartilage at the early stage.…”

Section: Discussionmentioning

confidence: 99%

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Intraoperative Acoustic Evaluation of Living Human Knee Cartilage-Comparison with Respect to Cartilage Degeneration and Aging

et al. 2023

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Objective The objective of the study was to evaluate the mechanical properties of living human knee cartilage using our ultrasonic device, and to compare the measurements with respect to cartilage degeneration and aging. Design A total of 95 knees which had undergone arthroscopic knee surgery, from 88 patients, were included in the study, with informed consent. All procedures were reviewed and approved by the ethical committee of our hospital. In the study group, there were 41 men, 47 women, 39 right knees, and 56 left knees. The conditions primarily included knee osteoarthritis and anterior cruciate ligament rupture. The mean operative age was 44.1 years old (range = 10-83). We compared mechanical properties of the knee cartilage with respect to aging and gender, in comparison with normal cartilage. A P value of <0.05 represented statistical significance. Results In the context of the International Cartilage Repair Society (ICRS) classification of cartilage degeneration (grade 0-3), the signal intensity in grade 0 was significantly larger than that in grade 1, 2, or 3. The thickness in grade 0 was significantly higher than that in grade 1, 2, or 3. Normal cartilage in older women had the lowest signal intensity and the least cartilage thickness among all the groups. Conclusion The ultrasonic system we developed was able to detect early degenerative changes in living cartilage in knees. The lowest signal intensity and least cartilage thickness in normal cartilage among older women were correlated to a large prevalence of knee osteoarthritis in women. Level of Evidence: Level IV, case series

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Intraoperative Acoustic Evaluation of Living Human Knee Cartilage-Comparison with Respect to Cartilage Degeneration and Aging

et al. 2023

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“…Schmid et al [6] [16,17]. Ebenso wurde die Verminderung der Knorpeldicke mit intraoperativer Sonografie bestimmt [18]. Für einen routinemäßigen Einsatz hatten sich diese Geräte jedoch bislang nicht etablieren können.…”

Section: Diagnostische Möglichkeiten Von Knorpelschäden Und Arthrose unclassified

Bestimmung des Degenerationsgrads am hyalinen Gelenkknorpel durch Nah-Infrarot-Spektroskopie (NIRS): Methodenbeschreibung und Literaturübersicht

et al. 2013

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Damage to hyaline cartilage is the most important pathophysiological tool in the development of osteoarthritis. Cartilage lesions are the most frequent pathological findings during arthroscopic operations. Arthroscopies as well as magnetic resonance tomography are gold standards for detection of cartilage lesions. But the arthroscopic evaluation of cartilage lesions is descriptive and subjective only. The surgeon is able to differentiate between intact cartilage surface, softening, superficial or deep fissure or flake and finally a complete defect. In routine arthroscopy the grading mostly is made by use of different scores [e.g. ICRS (International Cartilage Repair Society), Outerbridge, Insall, Jäger-Wirth or others]. Because the arthroscopic evaluation is subjective the reliability of this method is poor. Spectroscopic methods are established for evaluation of different tissue diseases in different indications. NIRS (near infrared spectroscopy) has become an important method for medical diagnostics in the last years. NIR is very energy-rich and suitable for glass fibre transport without relevant reduction. Insofar this technology may be ideal for endoscopic procedures. Our systematic literature review reveals that NIRS is a sufficient method for an objective diagnosis of cartilage lesions. In the current work we demonstrate an NIRS-based device for intraoperative, real-time cartilage evaluation. Furthermore, we discuss the possible clinical consequences from such measurements.

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Ultrasonic probe is useful for in vivo quantitative assessment of medial femoral condyle articular cartilage

Cited by 2 publications

References 31 publications

Intraoperative Acoustic Evaluation of Living Human Knee Cartilage-Comparison with Respect to Cartilage Degeneration and Aging

Intraoperative Acoustic Evaluation of Living Human Knee Cartilage-Comparison with Respect to Cartilage Degeneration and Aging

Bestimmung des Degenerationsgrads am hyalinen Gelenkknorpel durch Nah-Infrarot-Spektroskopie (NIRS): Methodenbeschreibung und Literaturübersicht

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