A Probing Device for Quantitatively Measuring the Mechanical Properties of Soft Tissues during Arthroscopy

Hananouchi, Takehito

doi:10.3791/60722

Cited by 3 publications

(10 citation statements)

References 9 publications

(10 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the stiffness of a material or a biomimetic material can be quantified by the measured value of the resistance force of the target tissue. For example, one of the authors of this paper measured the resistance force of the hip labrum in a surgical training model [ 6 ]. The force value was 4.4 N (SD; 0.2 N) for the intact and 1.6 N (0.1 N) for the detached labrum.…”

Section: Discussionmentioning

confidence: 99%

“…Using a normal metallic probe, we confirmed the presence of a partial labral tear (i.e., imperfect detachment of acetabular rim from the bone) at the anterosuperior portion in all ten cases. Then, the measurements were taken using the probing device [ 6 ].…”

Section: Methodsmentioning

confidence: 99%

“…The probing device could not record the sliding distance, but just determined it. the The sliding distance was set to 3 mm in this study [ 6 ]. Dedicated software visualized the three forces at the separate graphs in the x, y, and z directions (x was the transverse direction, y was the vertical direction (direction of the hook), and z was the probe axis) measured in real-time with a frequency of 50 Hz.…”

Section: Methodsmentioning

confidence: 99%

“…We placed an arthroscopic camera into the first anterolateral portal, then inserted the probing device through the anterior portal with a thin elastic cover normally used intraoperatively in an ultrasound device (Probe cover, CIVCO Medical Solutions, Coralville, IA USA) [ 5 , 6 ], and went further into the hip joint until the tip of the device was located below the inner side of the hip labrum. The measurements of the hip labrum resistance in the anterosuperior potion were performed three times per case through the second portal ( Figure 2 ).…”

Section: Methodsmentioning

confidence: 99%

“…However, recent literature lacks a clear understanding of whether the stiffness of the hip labrum in the cadaveric tissues is different from that in patients. The stiffness of the in vivo hip labrum can be measured and compared with that of the cadaveric hip labrum using a probing device with a tri-axial force sensor (Probing Sensor, Takumi Precise Metal Work Manufacturing Ltd., Yao, Osaka, Japan) [ 5 , 6 ] developed by one of the authors to quantitatively measure the resistance of soft tissues in the joint.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Comparison of Labrum Resistance Force while Pull-Probing In Vivo and Cadaveric Hips

et al. 2021

Self Cite

View full text Add to dashboard Cite

Cadaver tissue has been identified as the highest-fidelity anatomical representation in terms of the training for orthopedic surgery, including for arthroscopy of a damaged hip labrum. However, hip labrum stiffness in vivo and in cadavers has not been directly compared. The purpose of this study was to compare in vivo and cadaveric hip labrum stiffness during pull-probing with a force sensor. We measured the resistance force of the hip labrum in ten patients during hip arthroscopy (i.e., in vivo) and compared it with ten cadavers, both intact and detached from the acetabulum, using a surgical knife. We confirmed a partial labral tear (i.e., not detached fully from the rim) at an antero-superior potion in all of the patients. The mean highest resistance levels for the hip labrum in the patients (4.7 N) were significantly lower than the intact cadaveric labrum (8.3 N), and slightly higher than the detached labrum (4.2 N). In this study, the stiffness of the cadaveric labrum tissue was similar to that of the in-vivo hip labrum.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Comparison of Labrum Resistance Force while Pull-Probing In Vivo and Cadaveric Hips

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

The Resistance Force of the Anterior Cruciate Ligament during Pull Probing Is Related to the Mechanical Property

Hananouchi

Suzuki²,

Dorthé

et al. 2021

Bioengineering

Self Cite

View full text Add to dashboard Cite

There are various methods for reconstructing the anterior cruciate ligament (ACL) from other muscles or tendons. Initial tension of the reconstructed ACL is one of the key elements affecting postoperative outcomes. However, tension cannot be measured after graft fixation. The only intraoperative assessment is pull probing, which is performed by pulling joint soft tissues with the arthroscopic probe and can be measured quantitatively. Therefore, its value might be used as an alternative value for the mechanical property of the ACL. Using a probing device one author developed to measure the resistance force of soft tissues quantitatively while probing, we measured the resistance force of dissected ACLs and used tensile testing to investigate the correlation between the resistance force and the mechanical property of the ligaments. According to the results, when a certain amount of tension (strain; 16.6%) was applied, its mechanical properties were moderately correlated (r = 0.56 [p = 0.045]) with the probing force. Therefore, the tension of the reconstructed ACL after fixation under real ACL reconstruction surgery can be derived from the value of the probing device.

show abstract

A Useful Combination of Quantitative Ultrashort Echo Time MR Imaging and a Probing Device for Biomechanical Evaluation of Articular Cartilage

et al. 2021

Self Cite

View full text Add to dashboard Cite

In this study, we combined quantitative ultrashort echo time (UTE) magnetic resonance (MR) imaging and an investigation by a probing device with tri-axial force sensor to seek correlations with mechanical properties of human patellar cartilage for in situ evaluation of biomechanical properties. Cartilage blocks (15 × 20 × 5 mm3) were dissected from the patella of six donors; 5 mm square regions of interest from the cartilage blocks were imaged using UTE-MR imaging sequences (T2* and magnetization transfer ratio (MTR)), and mechanical properties were measured using a micro indentation device. Then, the vertical reaction force on the cartilage surface was measured while push-probing forward 3 mm with the probing device at a 30° tilt to the horizontal plane. The results showed a positive correlation between stiffness/elastic modulus and each predictor variable (UTE-T2* (r = 0.240 and 0.255, respectively, UTE-MTR (r = 0.378 and 0.379, respectively), and probing device force (r = 0.426 and 0.423, respectively). Furthermore, multiple linear regression analysis showed the combination of the three predictors had stronger correlation (adjusted r2 = 0.314 (stiffness), 0.323 (elastic), respectively). Our results demonstrate the potential for these non- and less- invasive methods for in situ evaluation of the mechanical properties of cartilage tissue.

show abstract

A Probing Device for Quantitatively Measuring the Mechanical Properties of Soft Tissues during Arthroscopy

Cited by 3 publications

References 9 publications

Comparison of Labrum Resistance Force while Pull-Probing In Vivo and Cadaveric Hips

Comparison of Labrum Resistance Force while Pull-Probing In Vivo and Cadaveric Hips

The Resistance Force of the Anterior Cruciate Ligament during Pull Probing Is Related to the Mechanical Property

A Useful Combination of Quantitative Ultrashort Echo Time MR Imaging and a Probing Device for Biomechanical Evaluation of Articular Cartilage

Contact Info

Product

Resources

About