Strut Lengths

When frame parameters have been defined, and the frame has been fitted to the patient, enter the frame identifier, initial strut lengths and approximate ring spacing here. The strut lengths required are the precise distances between universal joint centres.

If you enter a frame identifier for which you have previously defined initial strut lengths and approximate ring spacing, and leave the data fields empty, then the saved data will be displayed for inspection or editing.

Frame identifier

The approximate ring centre-to-centre spacing helps the least-squares search algorithm to localise the solution to the forward kinematics problem. If in doubt enter say 70% of the maximum strut length.

Strut 1 length

Strut 2 length

Strut 3 length

Strut 4 length

Strut 5 length

Strut 6 length

Approximate ring centre-to-centre spacing