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Biomechanical influence of TKA designs with varying radii on bilateral TKA patients during sit-to-stand.
Dyn Med. 2008 Aug 13; 7:12.DM

Abstract

BACKGROUND

Compared to the design of a traditional multi-radius (MR) total knee arthroplasty (TKA), the single-radius (SR) implant investigated has a fixed flexion/extension center of rotation. The biomechanical effectiveness of an SR for functional daily activities, i.e., sit-to-stand, is not well understood. The purpose of the study was to compare the biomechanics underlying functional performance of the sit-to-stand (STS) movement between the limbs containing an MR and an SR TKA of bilateral TKA participants.

METHODS

Sagittal plane kinematics and kinetics, and EMG data for selected knee flexor and extensor muscles were analyzed for eight bilateral TKA patients, each with an SR and an MR TKA implant.

RESULTS

Compared to the MR limb, the SR limb demonstrated greater peak antero-posterior (AP) ground reaction force, higher AP ground reaction impulse, less vastus lateralis and semitendinosus EMG during the forward-thrust phase of the STS movement. No significant difference of knee extensor moment was found between the two knees.

CONCLUSION

Some GRF and EMG differences were evident between the MR and SR limbs during STS movement. Compensatory adaptations may be used to perform the STS.

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Authors+Show Affiliations

Wang H
School of Physical Education, Sport, and Exercise Science, Ball State University, Muncie, IN, USA. wanghenr@gmail.com
Simpson KJ
No affiliation info available
Chamnongkich S
No affiliation info available
Kinsey T
No affiliation info available
Mahoney OM
No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18700045

Citation

Wang, He, et al. "Biomechanical Influence of TKA Designs With Varying Radii On Bilateral TKA Patients During Sit-to-stand." Dynamic Medicine : DM, vol. 7, 2008, p. 12.
Wang H, Simpson KJ, Chamnongkich S, et al. Biomechanical influence of TKA designs with varying radii on bilateral TKA patients during sit-to-stand. Dyn Med. 2008;7:12.
Wang, H., Simpson, K. J., Chamnongkich, S., Kinsey, T., & Mahoney, O. M. (2008). Biomechanical influence of TKA designs with varying radii on bilateral TKA patients during sit-to-stand. Dynamic Medicine : DM, 7, 12. https://doi.org/10.1186/1476-5918-7-12
Wang H, et al. Biomechanical Influence of TKA Designs With Varying Radii On Bilateral TKA Patients During Sit-to-stand. Dyn Med. 2008 Aug 13;7:12. PubMed PMID: 18700045.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Biomechanical influence of TKA designs with varying radii on bilateral TKA patients during sit-to-stand. AU - Wang,He, AU - Simpson,Kathy J, AU - Chamnongkich,Samatchai, AU - Kinsey,Tracy, AU - Mahoney,Ormonde M, Y1 - 2008/08/13/ PY - 2007/01/26/received PY - 2008/08/13/accepted PY - 2008/8/14/pubmed PY - 2008/8/14/medline PY - 2008/8/14/entrez SP - 12 EP - 12 JF - Dynamic medicine : DM JO - Dyn Med VL - 7 N2 - BACKGROUND: Compared to the design of a traditional multi-radius (MR) total knee arthroplasty (TKA), the single-radius (SR) implant investigated has a fixed flexion/extension center of rotation. The biomechanical effectiveness of an SR for functional daily activities, i.e., sit-to-stand, is not well understood. The purpose of the study was to compare the biomechanics underlying functional performance of the sit-to-stand (STS) movement between the limbs containing an MR and an SR TKA of bilateral TKA participants. METHODS: Sagittal plane kinematics and kinetics, and EMG data for selected knee flexor and extensor muscles were analyzed for eight bilateral TKA patients, each with an SR and an MR TKA implant. RESULTS: Compared to the MR limb, the SR limb demonstrated greater peak antero-posterior (AP) ground reaction force, higher AP ground reaction impulse, less vastus lateralis and semitendinosus EMG during the forward-thrust phase of the STS movement. No significant difference of knee extensor moment was found between the two knees. CONCLUSION: Some GRF and EMG differences were evident between the MR and SR limbs during STS movement. Compensatory adaptations may be used to perform the STS. SN - 1476-5918 UR - https://www.unboundmedicine.com/medline/citation/18700045/Biomechanical_influence_of_TKA_designs_with_varying_radii_on_bilateral_TKA_patients_during_sit_to_stand_ L2 - https://dynamic-med.biomedcentral.com/articles/10.1186/1476-5918-7-12 DB - PRIME DP - Unbound Medicine ER -