Abstract：
:For clinical application the quantification of the actual subject-specific kinematics is necessary. Soft tissue artefact (STA) propagation to joint kinematics can nullify the clinical interpretability of stereophotogrammetric analysis. STA was assessed to be strongly subject- and task-specific. The global optimisation, whose performance was assessed only on simulated data, is at the basis of several of the STA compensation methods proposed in the literature. On the other hand, the double calibration was recently proposed and resulted very effective on experimental data. In the present work, the performance of double calibration and global optimisation in reducing soft tissue artefact propagation to relevant knee joint kinematics was compared by using 3D fluoroscopy as gold standard. The mean RMSE over the repetitions for the double calibration is in the order of 1-2 degrees for joint rotations and 1-3 mm for translation, while for the global optimisation is in the order of 10 degrees and 10-15 mm, respectively. The double calibration should then be preferred for the quantification of the subject specific kinematics.
journal_name
Gait Posturejournal_title
Gait & postureauthors
Stagni R,Fantozzi S,Cappello Adoi
10.1016/j.gaitpost.2008.07.008subject
Has Abstractpub_date
2009-01-01 00:00:00pages
119-22issue
1eissn
0966-6362issn
1879-2219pii
S0966-6362(08)00206-3journal_volume
29pub_type
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