Document Type : Research Paper

Authors

1 Biomedical Engineering Department, Al-Nahrain University - Iraq

2 Medical City, Ministry of Health, Baghdad, Iraq

Abstract

Total knee replacement is a surgical procedure for treatment of knee Osteoarthritis, Rheumatoid arthritis and posttraumatic arthritis. The main goals of TKR are relieve the pain, restore function, mobility and restore normal limb alignment for the patients. The aim of the study to investigate the gait dynamic improvements following TKR surgery by compare the dynamic parameter pre-operative and post-operative and then comparing the results with the normal gait parameters. The gait analysis was performed on five patients before and after they underwent unilateral TKR surgery. After three months from the total knee replacement there was a remarked increase in the function and decrease in pain. The varus and valgus malalignment will be return to normal alignment after operation, which is one of the main goals of the TKR. Post-operative cadence is higher than pre-operative for four patients, post-operative speed is faster than pre-operative for four patients and post-operative stride length is larger than pre-operative for four patients. The patients continue to walk with significant gait abnormalities by examining the kinetics and the kinematics of the operated limb, the results show the knee function not fully restored three months after unilateraL TKR surgery.

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[1] S.J. Hall, “Basic Biomechanics,” 6th edition,
McGraw, ISBN: 9-780-0733-7644-8, 2012.
[2] P.K, Levangie, PT, DSC, C.C. Norkin, PT, EdD,
“Joint Structure and Function: A Comprehensive
Analysis,” 4th edition, ISBN: 0-8036-1191-9, 2005.
[3] S. Affatato, “Surgical Techniques in Total Knee
Arthroplasty (TKA) and Alternative Procedures,”
ISBN: 9-781-7824-2030-9, 2015.
[4] S.A. Wilson, P.D. McCann, R.S. Gotlin, H.K.
Ramakrishnan, M.E, Wooteten, and J.N. Install,
“Comprehensive Gait Analysis in Posterior-stabilized
Knee Arthroplastym” Journal of arthroplasty, 11, No.
4 1996.
[5] T. Otsuki, K. Nawata, and M. Okuno,
“Quantitative evaluation of gait pattern in patients with
osteoarthritis of the knee before and after total knee
arthroplasty. Gait analysis using a pressure measuring
system,” Journal of Orthopaedic Science (1999) 4:99-
105.
[6] M.G. Benedetti, F. Catani, T.W. Bilotta, M.
Marcacci, E. Mariani, S. Giannini, “Muscle activation
pattern and gait biomechanics after total knee
replacement,” Clinical Biomechanics, 18: 871-876,
2003.
[7] P. Levinger, H.B. Menz, A.D. Morrow, M.A.
Perrott, J.R. Bartlett, J.A. Feller, N.B. Bergman, “Knee
Biomechanics Early after Knee Replacement Surgery Predict
Abnormal Gait Patterns 12 Months Postoperatively,” Journal
of Orthopedic, Research 30:371-376, 2012.
[8] B.A. Faihan, “Dynamic analysis of human gait
cycle,” MSc. Thesis, College of Engineering, Medical
Eng. Dep., Al-Nahrain University, 2013.
[9] D. Kaya, “Proprioception: The Forgotten Sixth
Sense,” OMICS Group eBooks, 731 Gull Ave, Foster
City, CA 94404, USA, 2015.
[10] D. Mandeville, L.R. Osternig, Li-Shan Chou,
“The effect of total knee replacement surgery on gait
stability,” Gait and Posture, 27:103-109, 2008.