Correction to: Scientific Reports https://doi.org/10.1038/s41598-018-37189-z, published online 17 January 2019

This Article contains a typographical error in the Materials and Methods section where,

“Hence, only a brief summary of the measurements is provided here: Six TKA patients: 5 male, 1 female, aged 77(65–80) [median, range] years, 5–7 y post-op, mass 88(63–95) kg, height 174(165–175) cm, implanted with a posterior cruciate sacrificing (PCS) INNEX-FIXUC implant (Zimmer, Switzerland), performed 5–6 repetitions of a squat activity (Fig. 1A)”.

should read:

“Hence, only a brief summary of the measurements is provided here: Six TKA patients: 5 male, 1 female, aged 77(65–80) [median, range] years, 5–7 y post-op, mass 93(67–101) kg, height 174(165–175) cm, implanted with a posterior cruciate sacrificing (PCS) INNEX-FIXUC implant (Zimmer, Switzerland), performed 5–6 repetitions of a squat activity (Fig. 1A)”.