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. 2018 May 9;18:156. doi: 10.1186/s12887-018-1129-4

Fig. 2.

Fig. 2

Ultrasound images used to assess the GM muscle belly and Achilles tendon lengths, based on the US-tape method of Barber et al. 2011. The dashed lines show the distance from the superficial aspect of the condyle (a) and the most distal aspect of the muscle-tendon junction (b) to the tape (black shadow), whereby the white arrows indicate the US depth