Related Experiment Video
Updated: Jun 18, 2026

Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
Published on: July 5, 2017
[Muscle strength analysis of patella resurfacing in total knee arthroplasty]
Fan Liu1, Hou-Shan Lü, Zhi-Song Min
1Department of Orthopedics, People's Hosptal, Peking Medical University, Beijing, China.
Objective:
To investigate the influence of patella tracking and thickness for muscle strength after patellar resurfacing in total knee arthroplasty (TKA).
Methods:
Quadriceps muscle strength of 100 cases 134 knees with osteoarthritis were analysed with isokinetic testing and extension lag after patellar resurfacing in TKA. Result was analyzed statistically through T test.
Results:
Significant decreasing of quadriceps muscle strength and endurance were detected on mal-patellofemoral tracking (61 +/- 24, P <0.01) and improper position of patella prosthesis (56 +/- 33, P < 0.01). Anterior knee pain with patella resurfacing was mainly associated with mal-patellofemoral tracking.
Conclusion:
Asymptomatic weakness of quadriceps muscle was mainly associated with improper patella thickness.

