000195658 001__ 195658
000195658 005__ 20180913062320.0
000195658 0247_ $$2doi$$a10.1016/j.medengphy.2013.12.001
000195658 02470 $$2ISI$$a000337930700010
000195658 037__ $$aARTICLE
000195658 245__ $$aSmart instrumentation for determination of ligament stiffness and ligament balance in total knee arthroplasty
000195658 269__ $$a2014
000195658 260__ $$aOxford$$bElsevier Sci Ltd$$c2014
000195658 300__ $$a5
000195658 336__ $$aJournal Articles
000195658 520__ $$aLigament balance is an important and subjective task performed during total knee arthroplasty (TKA) procedure. For this reason, it is desirable to develop instruments to quantitatively assess the soft-tissue balance since excessive imbalance can accelerate prosthesis wear and lead to early surgical revision. The instrumented distractor proposed in this study can assist surgeons on performing ligament balance by measuring the distraction gap and applied load. Also the device allows the determination of the ligament stiffness which can contribute a better understanding of the intrinsic mechanical behavior of the knee joint. Instrumentation of the device involved the use of hall-sensors for measuring the distractor displacement and strain gauges to transduce the force. The sensors were calibrated and tested to demonstrate their suitability for surgical use. Results show the distraction gap can be measured reliably with 0.1 mm accuracy and the distractive loads could be assessed with an accuracy in the range of 4 N. These characteristics are consistent with those have been proposed, in this work, for a device that could assist on performing ligament balance while permitting surgeons evaluation based on his experience. Preliminary results from in vitro tests were in accordance with expected stiffness values for medial collateral ligament (MCL) and lateral collateral ligament (LCL).
000195658 6531_ $$aLoad monitoring
000195658 6531_ $$aStrain sensors
000195658 6531_ $$aTotal knee arthroplasty
000195658 6531_ $$aSoft-tissue balance
000195658 6531_ $$aLigament balance
000195658 6531_ $$aLigament stiffness
000195658 700__ $$aHasenkamp, Willyan
000195658 700__ $$aVillard, Jimmy
000195658 700__ $$aDelaloye, Jean-Romain
000195658 700__ $$0242460$$aArami, Arash$$g191776
000195658 700__ $$0240202$$aBertsch, Arnaud$$g113143
000195658 700__ $$0247733$$aJolles-Haeberli, Brigitte$$g185421
000195658 700__ $$0240167$$aAminian, Kamiar$$g104385
000195658 700__ $$0240219$$aRenaud, Philippe$$g107144
000195658 773__ $$j36$$k6$$q721-725$$tMedical Engineering & Physics
000195658 8564_ $$uhttp://www.sciencedirect.com/science/article/pii/S1350453313002622$$zURL
000195658 909C0 $$0252064$$pLMIS4$$xU10324
000195658 909C0 $$0252052$$pLMAM$$xU10303
000195658 909CO $$ooai:infoscience.tind.io:195658$$pSTI$$particle
000195658 917Z8 $$x191776
000195658 917Z8 $$x113143
000195658 937__ $$aEPFL-ARTICLE-195658
000195658 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000195658 980__ $$aARTICLE