BURNETT W , KONTULAINEN S , MCLENNAN C , et al . Patella bone density is lower in knee osteoarthritis patients experiencing moderate-to-severe pain at rest [J]. J Musculoskelet Neuronal Interact , 2016 , 16 ( 1 ): 33 - 39 .
WINTERS JD , RUDOLPH KS . Quadriceps rate of force development affects gait and function in people with knee osteoarthritis [J]. Eur J Appl Physiol , 2014 , 114 ( 2 ): 273 - 284 .
GELLHORN AC , STUMPH JM , ZIKRY HE , et al . Ultrasound measures of muscle thickness may be superior to strength testing in adults with knee osteoarthritis: a cross-sectional study [J]. BMC Musculoskelet Disord , 2018 ,27, 19 ( 1 ): 350 .