Instrumented measurement of anterior laxity of the knee.

Daniel, Dale M.; Malcom, L L; Losse, Gary M.; Stone, Mary Lou; Sachs, Raymond A.; Burks, Robert T.

doi:10.2106/00004623-198567050-00006

Cited by 690 publications

(422 citation statements)

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“…The original KT-1000 Knee Ligament Arthrometer (MEDmetric Corp, San Diego, CA, USA) was introduced in 1982 and first reported in 1985 [25,26]. The patient is positioned supine with the knee flexed, and the KT-1000 is attached to the patient's leg as shown in Fig.…”

Section: Kt-1000/kt-2000mentioning

confidence: 99%

Anterior cruciate ligament assessment using arthrometry and stress imaging

Rohman

Macalena

2016

Curr Rev Musculoskelet Med

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Arthrometry and stress imaging are useful clinical tools for the objective assessment of anterior cruciate ligament (ACL) integrity. They are most frequently used for the diagnosis of a complete ACL tear when other workup is equivocal, in conjunction with history and clinical exam findings. Other applications include the diagnosis of partial ACL tears, injury prognosis, and post-operative monitoring. However, further studies are needed to validate these uses. Many different devices and techniques exist for objective examination, which have been compared in recent literature. Reliability and validity measures of these methods vary, and often depend upon examiner familiarity and skill. The KT series of devices is the current gold standard for arthrometry, although the newer robotic GNRB device shows promising early results. Newer methods of data interpretation have been developed for stress imaging, and portable technology may impact this field further.

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Section: Kt-1000/kt-2000mentioning

confidence: 99%

Anterior cruciate ligament assessment using arthrometry and stress imaging

Rohman

Macalena

2016

Curr Rev Musculoskelet Med

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“…It would appear that, like the KT-1000@, the rolimeter requires both some level of expertise and the careful adherence to some key points, especially regarding arthrometer placement [lo], knee angle [5,6,12], patient relaxation [5,11,12] and tibial rotation and freedom of tibial rotation [5,11,6,12] in order to obtain reliable and reproducible results.…”

Section: Introductionmentioning

confidence: 99%

An investigation to examine the inter-tester and intra-tester reliability of the Rolimeter® knee tester, and its sensitivity in identifying knee joint laxity

Hatcher

Arbuthnot

et al. 2005

J. Orthop. Res.

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Purpose: The purpose of this study is to evaluate the Rolimeter@ knee tester (Aircast@, Europe) as reliable and clinically sensitive tool for identifying and quantifying knee joint laxity utilising a sample of both known ACLD and normal knees.Methods: Thirty matched subjects (1 5 known ACLD and 15 normal subjects) were tested for knee joint laxity using the Polimeterm. Each subject was measured at both 90" and 30" of knee flexion, by each of the six investigators. This was then repeated again by all six investigators so that inter-tester and intra-tester reliability could be examined.Results: Results showed that there was good reliability between testers, and intra-tester reliability was good for both left and right knees in both 90" and 30" of flexion. Results also demonstrated a high level of sensitivity for determining knee joint laxity in ACLD compared to normal knees. Conclusion:The Rolimeter@ knee tester is a reliable device for quantifying knee joint laxity, and is sensitive enough to identify anterior cruciate ligament deficiency.

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“…A KT1000 arthrometer study reported displacement of 5.6 mm and 13.0 mm. 3 A stress radiographic study reported displacement of 4.3 mm and 9.8 mm. 4 A dynamic MRI study reported displacement of 4.7 mm and 14.1 mm.…”

Section: Discussionmentioning

confidence: 99%

“…A study of bilaterally normal subjects reported a normal left-right displacement difference of less than 2 mm. 3 Tests using a magnetic tracker or arthrometer can be undertaken in a clinical setting. They are, therefore, quicker and much less expensive than radiographic or MRI tests.…”

Section: Discussionmentioning

confidence: 99%

Magnetic Tracking: A Novel Method of Assessing Anterior Cruciate Ligament Deficiency

Kundra

Moorehead

Barton-Hanson

et al. 2006

annals

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INTRODUCTION The Lachman test is commonly performed as part of the routine assessment of patients with suspected anterior cruciate ligament (ACL) deficiency. A major drawback is its reliance on the clinician's subjective judgement of movement. The aim of this study was to quantify Lachman movement using a magnetic tracking device thereby providing a more accurate objective measure of movement.PATIENTS AND METHODS Ten patients aged 21-51 years were assessed as having unilateral ACL deficiency with conventional clinical tests. These patients were then re-assessed using a Polhemus Fastrak™ magnetic tracking device. RESULTS The mean anterior tibial displacement was 5.6 mm (SD = 2.5) for the normal knees and 10.2 mm (SD = 4.2) for the ACL-deficient knees. This gave an 82% increase in anterior tibial displacement for the ACL deficient knees. This was shown to be highly significant with P = 0.005.CONCLUSIONS The magnetic tracking system offers an objective quantification of displacements during the Lachman test. It is convenient, non-invasive and comfortable for the patient and is, therefore, ideally suited for use as an investigative tool.

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Instrumented measurement of anterior laxity of the knee.

Cited by 690 publications

References 0 publications

Anterior cruciate ligament assessment using arthrometry and stress imaging

Anterior cruciate ligament assessment using arthrometry and stress imaging

An investigation to examine the inter-tester and intra-tester reliability of the Rolimeter® knee tester, and its sensitivity in identifying knee joint laxity

Magnetic Tracking: A Novel Method of Assessing Anterior Cruciate Ligament Deficiency

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