User's Manual

Document MV0319P.N
© Xsens Technologies B.V.
MVN User Manual
118
Note: In ISB and MVN, the origin is in center of hip rotation, which is the head of the femur. Della
Croce
[iv]
: midpoint LE and ME. In the MVN model, the lateral and medial epicondyles are on the same
height.
19.7.9 Lower Leg (Tibia/Fibula): Segment 17 Right and Segment 21 Left
MVN
ISB
[ii]
O
jRightKnee
jLeftKnee
IM
IM
X
Perp. Y and Z
Pointing forwards
Line perp. to torsional plane of
tibia/fibula.
Pointing anteriorly
Y
Right: jRightAnkle to jRightKnee
Left: jLeftAnkle to jLeftKnee
Line perp. to X and Z
Z
Right: Medial to Lateral
Left: Lateral to Medial
Pointing right
Line between MM and LM.
Pointing to the right
Note: In MVN, the joint center is approx. between LC and MC which corresponds with the center of
rotation of the lower leg. Same coordinate system as Della Croce
[iv]
, except that the origin is not in IM.
In ISB, the Y axis is not along the Tibia. In the MVN model the lateral and medial epicondyles and lateral
and medial malleoli are the same height.