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Table 3 Summary of results obtained from X-ray images

From: Movement within foot and ankle joint in children with spastic cerebral palsy: a 3-dimensional ultrasound analysis of medial gastrocnemius length with correction for effects of foot deformation

Subject Rotations 0 to +4 Nm Muscle-tendon complex length changes 0 to +4 Nm
Foot plate angle with tib-fib (º) True ankle dorsal flexion (º) triceps surae peroneus brevis tibialis anterior
Total* (mm) Due to foot deform.‡ (mm) Total* (mm) Due to foot deform.‡ (mm) Total* (mm) Due to foot deform.‡ (mm)
SCP 15.0 7.0 + 8.8 +1.9 -1.3 -0.8 -6.7 -1.3
TD A. 15.0 13.5 +12.8 ≈0.0 +6.0 +3.0 -8.6 ≈0.0
TD B. 18.0 16.0 +13.2 ≈0.0 +6.3 +2.5 -6.0 ≈0.0
  1. *obtained from fibula aligned images; ‡ obtained from talus aligned images.