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Tibiofemoral contact points relative to flexion angle measured with MRI
Örebro University, School of Medical Sciences. Department of Orthopaedic Surgery, Karolinska Hospital, Stockholm, Sweden; Department of Surgical Sciences, Section for Orthopaedics, Karolinska Institute, Stockholm, Sweden.
Department of Orthopaedic Surgery, Karolinska Hospital, Stockholm, Sweden.
Department of Orthopaedic Surgery, Karolinska Hospital, Stockholm, Sweden; Department of Surgical Sciences, Section for Orthopaedics, Karolinska Institute, Stockholm, Sweden.
2002 (English)In: Clinical Biomechanics, ISSN 0268-0033, E-ISSN 1879-1271, Vol. 17, no 6, 477-485 p.Article in journal (Refereed) Published
Abstract [en]

Objective: To determine whether knee flexion influenced bony contact movements during flexion.

Design: Accurate three-dimensional (3D) measurements of tibiofemoral bony contact points in vivo was performed using magnetic resonance imaging technology at 0 degrees, 30 degrees and 60 degrees of flexion.

Background: Magnetic resonance imaging is an accurate non-invasive tool for visualizing muscles, tendons, and bone, and provides precise 3D co-ordinates.

Methods: Magnetic resonance imaging recordings were made from the right knee of 16 subjects with no history of knee dysfunction at 0 degrees, 30 degrees and 60 degrees of flexion. Joint contact movements were reported as changes of the contact point's position on the medial and lateral tibial condyle with respect to a fixed reference point for each flexion angle.

Results: The dominant motion of the centroid of the contact area was posterior with a concomitant inferior and lateral displacement when flexing from 0-30 degrees. Increased flexion to 60 degrees the contact points moved slightly anterior, superior and continued laterally. Comparing movements between the medial and lateral compartments, larger displacement magnitudes were observed laterally. Additionally, tibial rotations of 3-5 degrees were noted relative to the femur.

Conclusion: Based on magnetic resonance imaging co-ordinates and the rotated anatomical reference frame, the geometric equations to derive the contact point between the tibiofemoral articulating surfaces is a viable means to investigate tibiofemoral bony contact movement.

Reslevance: Contact areas and pressure distributions have been reported using cadaveric specimens but interpretation of the results is limited. Other investigations have been restricted to sagittal plane movement. Using kinematic magnetic resonance imaging, accurate non-invasive 3D recordings of the normal knee at increments of flexion are possible. The normative baseline date can be compared against that of the pathological knee, such as cruciate ligament injury or the status of post-operative meniscectomy in order to examine skeletal joint motion and stability.

Place, publisher, year, edition, pages
Oxon, United Kingdom: Elsevier, 2002. Vol. 17, no 6, 477-485 p.
Keyword [en]
Magnetic resonance imaging, MRI, tibiofemoral contact points, tibiofemoral kinematics, three-dimensional tibiofemoral kinematics, knee kinematics
National Category
Medical and Health Sciences Orthopedics
Identifiers
URN: urn:nbn:se:oru:diva-55753DOI: 10.1016/S0268-0033(02)00036-0ISI: 000177411700008PubMedID: 12135550Scopus ID: 2-s2.0-0036316405OAI: oai:DiVA.org:oru-55753DiVA: diva2:1074526
Available from: 2017-02-15 Created: 2017-02-15 Last updated: 2017-03-01Bibliographically approved

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