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Morrison, J. B. (1970). The mechanics of the knee joint in relation to normal walking. Journal of Biomechanical Engineering, 3, 51-61. doi:10.1016/0021-9290(70)90050-3

has been cited by the following article:

• TITLE: The Effects of Knee Joint Pain and Disorders on Knee Extension Strength and Walking Ability in the Female Elderly

  AUTHORS: Hiroki Sugiura, Shinichi Demura

  KEYWORDS: Knee Joint Pain; Knee Joint Disorder; Knee Extension Strength; Gait; Female Elderly

  JOURNAL NAME: Advances in Physical Education, Vol.2 No.4, November 21, 2012

  ABSTRACT: This study examines the differences in leg strength and walking ability among groups with different knee problems. The participants were 328 elderly females (60 - 94 years old; mean age 76.1 years; SD = 6.2) who were classified into three groups: those without knee pain or a knee disorder, those with knee pain, and those with a knee disorder. The subjects took knee extension strength and 12 meter maximum effort walk tests. Knee extension strength was significantly lower in the groups with knee pain and a knee disorder than in the group without pain or a knee disorder. Walking speed was significantly slower in the group with a knee disorder than in the other two groups. In conclusion, the female elderly with knee pain or a knee disorder are inferior in knee extension strength and walking ability. In addition, the elderly with a knee disorder are inferior in walking ability to the elderly with knee pain.