What question did this study set out to answer?

To assess whether mobile-bearing posterior-stabilized total knee arthroplasty restores normal femoral translation and tibial rotation more effectively than a fixed-bearing design.

November 1, 2003Clinical Orthopaedics and Related Research

The Kinematics of Fixed- and Mobile-Bearing Total Knee Arthroplasty

View Full Paper

Ask AI

Bookmark

Authors

EMEphrat MostExponent (United States)GLGuoan LiXuzhou Medical College SSSteven Schule

Discussion

Member takes

Implication

Biomechanical study demonstrates comparable motion patterns between fixed- and mobile-bearing implants in cadaveric knees, indicating both designs only partially restore normal joint kinematics.

Key Points

To assess whether mobile-bearing posterior-stabilized total knee arthroplasty restores normal femoral translation and tibial rotation more effectively than a fixed-bearing design.
Tested 11 postmortem human knee specimens using a specialized robotic testing system.
Evaluated intact knee kinematics against reconstructed knees using a single posterior-stabilized implant design configured with either fixed- or mobile-bearing tibial components.
Measured posterior femoral translation and tibial rotation across flexion angles along passive motion paths and under applied muscle loads.
Posterior femoral translation consistently occurred along the passive path and under muscle loading, with greater flexion angles corresponding to increased internal tibial rotation.
Femoral translation and tibial rotation were qualitatively similar between fixed- and mobile-bearing components despite their structural design differences.
Both arthroplasty configurations only partially restored the intact knee's native translation and rotational patterns across tested flexion ranges.

Cite This Study

Most et al. (2003) studied this question.

synapsesocial.com/papers/6a8433ae8bb79d42a483d55b https://doi.org/10.1097/01.blo.0000092999.90435.d1

View Full Paper

Ask AI

Bookmark

Implication

Biomechanical study demonstrates comparable motion patterns between fixed- and mobile-bearing implants in cadaveric knees, indicating both designs only partially restore normal joint kinematics.

The Kinematics of Fixed- and Mobile-Bearing Total Knee Arthroplasty

Discussion

Member takes

Implication

Key Points

Cite This Study

The Kinematics of Fixed- and Mobile-Bearing Total Knee Arthroplasty

Discussion

Member takes

Implication

Key Points

Cite This Study

Also Consider

Also Consider