TITLE

Evaluation of Knee Stability with Use of a Robotic System

AUTHOR(S)
Woo, Savio L-Y.; Fisher, Matthew B.
PUB. DATE
February 2009
SOURCE
Journal of Bone & Joint Surgery, American Volume;Feb2009 Supplement 1, Vol. 91-A Issue S1, p78
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In our research center, we have developed and utilized a novel robotic/universal force-moment sensor testing system to gain quantitative data on multiple-degree-of-freedom kinematics of the knee simultaneously with data on the in situ forces in normal and repaired soft tissues. In particular, we have investigated the complex interaction of the anteromedial and posterolateral bundles of the anterior cruciate ligament as well as several key biomechanical variables in anterior cruciate ligament reconstruction, such as graft selection and femoral tunnel placement (both of which impact knee stability). For example, both the bone-patellar tendon-bone and quadrupled hamstrings tendon autografts restored anterior stability but were insufficient in gaining rotatory stability. In a follow-up study, we have shown that a more laterally placed graft was beneficial and could improve these outcomes. Such findings led to additional investigation in which the biomechanical advantages of double-bundle anterior cruciate ligament reconstruction were demonstrated. However, a more laterally placed autograft at the femoral insertion of the posterolateral bundle also worked well, especially when the knee was nearly at full extension (a position in which the anterior cruciate ligament is needed most). At present, we are moving forward by obtaining in vivo kinematics data and then repeating those kinematics exactly to obtain new data with use of the robotic/universal force-moment sensor testing system in order to gain further insight regarding the function of the anterior cruciate ligament and anterior cruciate ligament replacement grafts in vivo. In parallel, we are developing a mathematical model of the knee and validating the computational model with experimental data. The combined approach will yield new and relevant information, including the stress and strain distribution in the anterior cruciate ligament and anterior cruciate ligamentgrafts. This will facilitate a better understanding of the function of the anterior cruciate ligament and a scientifically based design of surgical procedures and postoperative rehabilitation protocols that will lead to better patient outcomes.
ACCESSION #
36656927

 

Related Articles

  • `Acrobot' capable of delicate knee surgery.  // CMAJ: Canadian Medical Association Journal;06/15/97, Vol. 156 Issue 12, p1690 

    Reports on the London Imperial College of Science of Technology and Medicine's development of the `Acrobot' which can help surgeons in performing delicate knee operations. Mechanism and testing of the Acrobot at London's Guy Hospital.

  • ACL mismatch reconstructions: influence of different tunnel placement strategies in single-bundle ACL reconstructions on the knee kinematics. Herbort, Mirco; Lenschow, Simon; Fu, Freddie H.; Petersen, Wolf; Zantop, Thore // Knee Surgery, Sports Traumatology, Arthroscopy;Nov2010, Vol. 18 Issue 11, p1551 

    To evaluate the influence of tibial and femoral tunnel position in ACL reconstruction on knee kinematics, we compared ACL reconstruction with a tibial and femoral tunnel in anteromedial (AM-AM reconstruction) and in posterolateral footprint (PL-PL reconstruction) with a reconstruction technique...

  • Dynamic biomechanical model for assessing and monitoring robot-assisted upper-limb therapy. Abdullah, Hussein A.; Tarry, Cole; Datta, Rahul; Mittal, Gauri S.; Abderrahim, Mohamed // Journal of Rehabilitation Research & Development;2007, Vol. 44 Issue 1, p43 

    This article describes the design, validation, and application of a dynamic biomechanical model that assesses and monitors trajectory, position, orientation, force, and torque generated by upper-limb (UL) movement during robot-assisted therapy. The model consists of two links that represent the...

  • An accelerated rehab program after knee surgery improves recovery.  // Modern Medicine;May97, Vol. 65 Issue 5, p19 

    Reports on the study by K. Donald Shelbourne, which shows the effectiveness of an accelerated rehabilitation program after knee surgery. Findings on the strength of anterior cruciate ligament (ACL) grafts; Evaluation of patients' return to normal activities, strength and pre-operative conditioning.

  • Knee rehab: Easy does it. Collado, Angelo B. // Joe Weider's Muscle & Fitness;Jan97, Vol. 58 Issue 1, p188 

    Presents a discussion on rehabilitation after anterior cruciate ligament (ACL) reconstructive surgery. Condition of the transplanted ACL at the beginning; Proper time for starting a weight-training program; Best exercises.

  • Modelado y Simulación de un Robot Terapéutico para la Rehabilitación de Miembros Inferiores. Humberto Guzmán Valdivia, César; Blanco Ortega, Andrés; Antonio Oliver Salazar, Marco; Ramón Azcaray Rivera, Héctor // Biomedical Engineering Journal / Revista Ingeniería Biomédica;jul-dic2013, Vol. 7 Issue 14, p42 

    Rehabilitation in a general sense aims to reinstate a person to their activities of daily living. Currently, a patient that requires a rehabilitation suffers long waits for treatment due to lack of staff in clinics and hospitals. An alternative to assist medical staff in rehabilitation therapies...

  • Bilateral assessment of functional tasks for robot-assisted therapy applications. Johnson, Michelle; Wang, Sarah; Bai, Ping; Strachota, Elaine; Tchekanov, Guennady; Melbye, Jeff; McGuire, John // Medical & Biological Engineering & Computing;Oct2011, Vol. 49 Issue 10, p1157 

    This article presents a novel evaluation system along with methods to evaluate bilateral coordination of arm function on activities of daily living tasks before and after robot-assisted therapy. An affordable bilateral assessment system (BiAS) consisting of two mini-passive measuring units...

  • Anatomical double-bundle MPFL reconstruction with an aperture fixation. Schöttle, Philip B.; Hensler, Daniel; Imhoff, Andreas B. // Knee Surgery, Sports Traumatology, Arthroscopy;Feb2010, Vol. 18 Issue 2, p147 

    Since biomechanical studies have shown that the medial patellofemoral ligament (MPFL) is the main restraint against lateral patella displacement, reconstruction of the MPFL has become an accepted method of restoring patellofemoral stability and numerous techniques were described. Due to...

  • Strong correlation between the morphology of the proximal femur and the geometry of the distal femoral trochlea. Wright, Samantha; Miles, Anthony; Boymans, Tim; Grimm, Bernd; Kessler, Oliver // Knee Surgery, Sports Traumatology, Arthroscopy;Dec2014, Vol. 22 Issue 12, p2900 

    Purpose: Previous investigations suggested that the geometry of the proximal femur may be related to osteoarthritis of the tibiofemoral joint and various patellofemoral joint conditions. This study aims to investigate the correlation between proximal and distal femoral geometry. Such a...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics