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. Author manuscript; available in PMC: 2017 Jul 9.
Published in final edited form as: J Orthop Res. 2016 Feb 4;34(9):1576–1587. doi: 10.1002/jor.23171

Figure 2.

Figure 2

Calculated muscle forces spanning the knee (mean ± std) during level walking, walking down stairs, and chair rise/sit. Events for gait and stair descent: Heel-strike at 0% and 100% of cycle, toe-off at 60–65% of cycle, contralateral heel-strike at 50–55% of cycle.