Quantitative comparison of the pivot shift test results before and after anterior cruciate ligament reconstruction by using the three-dimensional electromagnetic measurement system

Nagai, Kazuo; Hoshino, Yuichi; Nishizawa, Yuichiro; Araki, Daisuke; Matsushita, Takehiko; Matsumoto, Tomoyuki; Takayama, Koji; Nagamune, Kouki; Kurosaka, Masahiro; Kuroda, Ryosuke

doi:10.1007/s00167-015-3776-4

Cited by 35 publications

(63 citation statements)

References 40 publications

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“…Moreover, since most of the examinations were performed under anaesthesia, the results applicable to awake patients and office setting could be questioned. Furthermore, since the repeatability of the measures detected was reported for one of the proposed devices (KiRA, Orthokey) and the electromagnetic devices (Liberty, Polhemus FasTrak),24 33 41 it is fundamental to take into account this technical characteristic. Intratester variability could indeed affect the obtained results, thus requiring multiple test repetition.…”

Section: Discussionmentioning

confidence: 98%

“…Two studies33 41 produced by the same group evaluated the use of electromagnetic sensors (Liberty, Polhemus FasTrak). The authors were able to report significant differences between the mean values of tibial acceleration and translation when grouped for each clinical grade of the pivot shift.…”

Section: Discussionmentioning

confidence: 99%

“…First of all, only two studies35 41 reported in their series at least one knee for each of the four pivot shift clinical grade; two studies25 35 even classified knee laxity as grade I or II only. This lack of covering all the spectrum of clinical laxity could compromise the possibility to generalise the correlation between manual and instrumented evaluation.…”

Section: Discussionmentioning

confidence: 99%

“…Second, the high variety of setting and set-up characteristics—such as the number of examiners, number of tests and evaluations performed with awake patients or under anaesthesia— should be taken into account. In four studies in fact,33 35 39 41 the evaluation was not performed by the same examiner in all the knees. Moreover, since most of the examinations were performed under anaesthesia, the results applicable to awake patients and office setting could be questioned.…”

Section: Discussionmentioning

confidence: 99%

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No proof for the best instrumented device to grade the pivot shift test: a systematic review

et al. 2016

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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No proof for the best instrumented device to grade the pivot shift test: a systematic review

et al. 2016

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“…Subsequently, the criteria to diagnose the partial tear of the ACL based on the quantitative measurement of the pivot-shift can be applied to select one of a variety of ACL reconstruction techniques, i.e., partial ACL augmentation or complete ACL reconstruction. As a result of this methodology, the partial ACL rupture treated by the ACL augmentation provided a comparable clinical result to standard ACL reconstruction [26].…”

Section: Detection Of Abnormal Knee Kinematics During the Pivot-shiftmentioning

confidence: 90%

Electromagnetic tracking of the pivot-shift

Kuroda

Hoshino

2016

Curr Rev Musculoskelet Med

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The pivot-shift test is an important examination to assess the rotational laxity in the anterior cruciate ligament (ACL) injured and reconstructed knees. Because this examination is related to subjective knee function, we may still see cases that have residual rotational laxity after ACL reconstruction. Quantitative evaluation of the pivot-shift test is preferable to the clinical pivot-shift test but is difficult to attain mainly due to complicated movements of the pivot-shift. The electromagnetic tracking system was developed to evaluate knee kinematics during the pivot-shift, providing information related to 6-degree-of-freedom knee kinematics with a high sampling rate. Through this device, the abnormal movement of the pivot-shift is characterized in two phases: an increased anterior tibial translation and a boosted acceleration of tibial posterior reduction. Since its invention, this system has been utilized to assess rotational laxity for clinical follow-up and research after the ACL reconstruction.

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Design and Implementation of a Wearable System Based on a Flexible Capacitive Sensor, Monitoring Knee Laxity

Prakash

Andersen

Einem

et al. 2023

Advanced Sensor Research

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The anterior cruciate ligament (ACL) tear is one of the most common knee injuries causing instability to the knee joint. Current methods of diagnosis fail to meet the ergonomic, reliability, and reproducibility requirements. Thus, the wearable sensors are gaining momentum to overcome current challenges. This paper aims at proposing a wearable capacitive based sensor system that shows a good potential in substituting the currently used methods for the diagnosis of ACL rupture. The developed sensor system measures the internal tibial rotation of the knee. It is compact and lightweight. Being cable free, it can be worn as a patch, without impeding the freedom of movement of the physician. Moreover, it can be powered with a battery or wireless. Both methods make it compact, ergonomic, easy for the patient to wear and for the doctor to use. To analyze the suitability of the developed sensing system, data from a knee simulator setup and three healthy volunteers (2 Males and 1 Female) are compared and analyzed. In all the patients, above 15° for every 5° angle variation, a relative change of capacitance with respect to its initial value of 0.01 is observed. These results are comparable with the knee simulator's data with a max RMSE of 0.002. Below 15° the system is additionally able to measure a gender‐based difference of rotation due to the higher flexibility of ligaments in females. For them the sensitivity below and above 15° is comparable, for male the sensitivity below 15° is lower. The results show that the developed system has good potential in substituting the currently used method for the diagnosis of ACL rupture and paves the way toward the continuous observation in free movement of knee laxity.

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Quantitative comparison of the pivot shift test results before and after anterior cruciate ligament reconstruction by using the three-dimensional electromagnetic measurement system

Abstract: III.

Cited by 35 publications

References 40 publications

No proof for the best instrumented device to grade the pivot shift test: a systematic review

No proof for the best instrumented device to grade the pivot shift test: a systematic review

Electromagnetic tracking of the pivot-shift

Design and Implementation of a Wearable System Based on a Flexible Capacitive Sensor, Monitoring Knee Laxity

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