The use of a universal force-moment sensor to determine in-situ forces in ligaments: a new methodology.

Determination of ligament forces is an integral part of understanding their contribution during motion and external loading of an intact joint. While almost all previous investigations have reported only the magnitude of tension, this alone cannot adequately describe the function of a particular ligament. An alternative approach to determine the in-situ forces in ligaments has been developed which utilizes a universal force-moment sensor in conjunction with a force transformation scheme. In addition to providing the magnitude of ligament force, the direction and point of application of this in-situ force can also be determined. Further, the approach does not require mechanical contact with the ligament. Application of this new methodology is demonstrated for the human anterior cruciate ligament in the present study (n = 7) although it may be similarly applied to other ligaments at the knee or in other synovial joints of the human body.

[1]  K. Markolf,et al.  Direct in vitro measurement of forces in the cruciate ligaments. Part I: The effect of multiplane loading in the intact knee. , 1993, The Journal of bone and joint surgery. American volume.

[2]  J L Lewis,et al.  Knee joint motion and ligament forces before and after ACL reconstruction. , 1989, Journal of biomechanical engineering.

[3]  K. Markolf,et al.  Direct measurement of resultant forces in the anterior cruciate ligament. An in vitro study performed with a new experimental technique. , 1990, The Journal of bone and joint surgery. American volume.

[4]  Freddie H. Fu,et al.  Determination of the in situ loads on the human anterior cruciate ligament , 1993, Journal of orthopaedic research : official publication of the Orthopaedic Research Society.

[5]  S L Woo,et al.  The effects of knee motion and external loading on the length of the anterior cruciate ligament (ACL): a kinematic study. , 1991, Journal of biomechanical engineering.

[6]  A. U. Daniels,et al.  Simultaneous quantitation of knee ligament forces. , 1983, Journal of biomechanics.

[7]  Edward S. Grood,et al.  In vivo forces in the anterior cruciate ligament during walking and trotting in a quadruped , 1993 .

[8]  J A Sidles,et al.  Ligament length relationships in the moving knee , 1988, Journal of orthopaedic research : official publication of the Orthopaedic Research Society.

[9]  F. Girgis,et al.  The cruciate ligaments of the knee joint. Anatomical, functional and experimental analysis. , 1975, Clinical orthopaedics and related research.

[10]  S Arai,et al.  The use of robotics technology to study human joint kinematics: a new methodology. , 1993, Journal of biomechanical engineering.

[11]  E S Grood,et al.  Sensitivity of insertion locations on length patterns of anterior cruciate ligament fibers. , 1986, Journal of biomechanical engineering.

[12]  K. H. Chan,et al.  Ligament tension pattern in the flexed knee in combined passive anterior translation and axial rotation , 1992, Journal of orthopaedic research : official publication of the Orthopaedic Research Society.

[13]  M. Cross,et al.  Anterior cruciate ligament: functional anatomy of its bundles in rotatory instabilities , 1979, The American journal of sports medicine.

[14]  J L Lewis,et al.  A note on the application and evaluation of the buckle transducer for the knee ligament force measurement. , 1982, Journal of biomechanical engineering.

[15]  L. Draganich,et al.  Tensions in the anterior and posterior cruciate ligaments of the knee during passive loading: Predicting ligament loads from in situ measurements , 1991, Journal of orthopaedic research : official publication of the Orthopaedic Research Society.

[16]  A. M. Ahmed,et al.  Design and performance of a modified buckle transducer for the measurement of ligament tension. , 1986, Journal of biomechanical engineering.

[17]  K. H. Chan,et al.  In‐vitro ligament tension pattern in the flexed knee in passive loading , 1987, Journal of orthopaedic research : official publication of the Orthopaedic Research Society.

[18]  K. Markolf,et al.  Direct in vitro measurement of forces in the cruciate ligaments. Part II: The effect of section of the posterolateral structures. , 1993, The Journal of bone and joint surgery. American volume.