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

Abstract

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.

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

“…Using the sliding aspect with a strain gauge sensor in the probing device, each ACL specimen was pulled vertically to its long axis by one author (TH) ( Figure 1 ). The pulling distance was set to 3 mm in this study, following the method used in previous studies [ 10 , 12 ]. Dedicated software visualized and recorded the three forces in separate graphs in x, y, and z directions (x was the transverse direction; y was the vertical direction (direction of the hook); z was the probe axis).…”

“…As discussed in [ 6 , 7 , 8 ], its evaluation is imprecise. The current technique for evaluating initial tension is to pull the reconstructed ligament with an arthroscopic probe [ 9 ], in a movement called “probing,” which is then assessed based on the surgeon’s intrinsic sensory feedback, or perception, of the amount of tension [ 10 ].…”

“…However, there have been no reports investigating the relationship between the mechanical property and tension assessment by probing. The probing device developed by one of the authors is capable of quantitatively evaluating the resistance force of joint soft tissues while probing [ 12 ], and properties of the hip labrum have been quantified using the probing device [ 10 , 13 ]. Therefore, using this device in ACL reconstruction surgery can clarify mechanical information regarding the ACL, such as its strength and/or stability, while probing.…”

Usefulness of Probing Sensor Device for Evaluating Meniscal Suture and Scaffold Implantation

“…Probing is performed during arthroscopic surgeries to identify the injured lesion, instability with gap appearance in the repair area, and repair tension of the soft tissue in the knee [21,22]. Recently, a probing device was developed to assess the hip and knee joints [23,24] quantitatively. This probing device quantitatively measures the resistance of soft tissues with a triaxial force sensor; it has been reported to be useful for measuring some mechanical properties of the joints during arthroscopy [23].…”

Adopted walking condition for computational simulation approach on bearing of hip joint prosthesis: review over the past 30 years

“…In performing various bearing couple studies on medical implant, four approaches can be used, namely clinical study [ 16 ], experimental testing [ 17 ], mathematical formula [ 18 ], and computational simulation [ 19 ]. In the first approach, the method used are radiographic [ 20 ], computed tomography [ 21 ], and hip analysis suite [ 22 ].…”