Quantification of Soft Tissue Artefacts Using Motion Capture Data and Ultrasound Depth Measurements

The centre of rotation of the hip joint is needed for an
accurate simulation of the joint performance in many applications
such as pre-operative planning simulation, human gait analysis, and
hip joint disorders. In human movement analysis, the hip joint center
can be estimated using a functional method based on the relative
motion of the femur to pelvis measured using reflective markers
attached to the skin surface. The principal source of errors in
estimation of hip joint centre location using functional methods is
soft tissue artefacts due to the relative motion between the markers
and bone. One of the main objectives in human movement analysis is
the assessment of soft tissue artefact as the accuracy of functional
methods depends upon it. Various studies have described the
movement of soft tissue artefact invasively, such as intra-cortical
pins, external fixators, percutaneous skeletal trackers, and Roentgen
photogrammetry. The goal of this study is to present a non-invasive
method to assess the displacements of the markers relative to the
underlying bone using optical motion capture data and tissue
thickness from ultrasound measurements during flexion, extension,
and abduction (all with knee extended) of the hip joint. Results show
that the artefact skin marker displacements are non-linear and larger
in areas closer to the hip joint. Also marker displacements are
dependent on the movement type and relatively larger in abduction
movement. The quantification of soft tissue artefacts can be used as a
basis for a correction procedure for hip joint kinematics.





References:
[1] A. Leardini, A. Cappozzo, F. Catani, S. Toksvig-Larsen, A. Petitto, V.
Sforz, G. Cassanelli and S. Giannini, "Validation of a functional method
for the estimation of hip joint centre location," Journal of Biomechanics,
vol. 32, no. 1, pp. 99-103, 1999.
[2] V. Camomilla, A. Cereatti, G. Vannozzi and A. Cappozzo, "An
optimized protocol for hip joint centre determination using the
functional method," Journal of Biomechanics, vol. 39, no. 6, pp. 1096-
1106, 2006.
[3] A.L. Bell, R.A. Brand, and D.R. Pedersen, "Prediction of hip joint centre
location from external landmarks," Human Movement Science, vol. 8,
pp. 3-16, 1989.
[4] M. Sangeux, P. Alana, and R. Baker, "Hip joint centre localization:
Evaluation on normal subjects in the context of gait analysis," Gait
&Posture, vol. 34, pp. 324-328, 2011.
[5] J. L. Hicks and J. G. Richards, "Clinical applicability of using spherical
fitting to find hip joint centers," Gait & Posture, vol. 22, pp. 138-145,
2005.
[6] V. Bouffard, M. Begon, A. Champagne, P. Farhadnia, P. A. Vendittoli,
M. Lavigne and F. Prince, "Hip joint center localisation: A
biomechanical application to hip arthroplasty population. World journal
of orthopedics," World Journal of Orthopedics, vol. 3, no. 8, p. 131,
2012.
[7] R.M. Ehrig, W.R. Taylor, G.N. Duda, and M.O. Heller, "A survey of
formal methods for determining the centre of rotation of ball joints,"
Journal of Biomechanics, vol. 39, pp. 2798-2809, 2006.
[8] A. Leardini, L. Chiari, U. Croce, A. Cappozzo, "Human movement
analysis using stereophotogrammetry: Part 3. Soft tissue artifact
assessment and compensation," Gait & Posture, vol. 21, pp. 212-225,
2005.
[9] S. Piazza, A. Erdemir, N. Okita, P. Cavanagh, "Assessment of the
functional method of hip joint center location subject to reduced range of
hip motion," Journal of Biomechanics, vol.37, pp. 349-356, 2004.
[10] C. Reinschmidt, A. J. Van Den Bogert, B. M. Nigg, A. Lundberg and N.
Murphy, "Effect of skin movement on the analysis of skeletal knee joint
motion during running," Journal of Biomechanics, vol. 30, no. 7, pp.
729-732, 1997.
[11] A. Cappozzo, F. Catani, A. Leardini, M. G. Benedetti and U. Della
Croce, "Position and orientation in space of bones during movement:
experimental artefacts," Clinical Biomechanics, vol. 11, no. 2, pp. 90-
100, 1996.
[12] J. P. Holden, J. A. Orsini, K. L. Siegel, T. M. Kepple, L. H. Gerber and
S. J. Stanhope, "Surface movement errors in shank kinematics and knee
kinetics during gait," Gait & Posture, vol. 5, no. 3, pp. 217-227, 1997.
[13] E. R. Valstar, R. G. Nelissen, J. H. Reiber and P. M. Rozing, "The use of
Roentgen stereophotogrammetry to study micromotion of orthopaedic
implants," ISPRS Journal of Photogrammetry and Remote Sensing, vol.
56, no. 5, pp. 376-389, 2002.
[14] S. A. Banks and W. A. Hodge, "Accurate measurement of threedimensional
knee replacement kinematics using single-plane
fluoroscopy," Biomedical Engineering, IEEE Transactions on, vol. 43,
no. 6, pp. 638-649, 1996.
[15] M. Sangeux, F. Marin, F. Charleux, L. Durselen and M. C. Ho Ba Tho,
"Quantification of the 3D relative movement of external marker sets vs.
bones based on magnetic resonance imaging," Clinical Biomechanics,
vol. 21, no. 9, pp. 984-991, 2006.
[16] L. Yahia]Cherif, B. Gilles, T. Molet and N. Magnenat]Thalmann,
"Motion capture and visualization of the hip joint with dynamic MRI
and optical systems," Computer Animation and Virtual Worlds, vol. 15,
no. 3-4, pp. 377-385, 2004.
[17] A. Rouhandeh, C. Joslin, Z. Qu and Y. Ono, "Non- invasive assessment
of soft-tissue artefacts in hip joint kinematics using motion capture data
and ultrasound depth measurements," 36th Annual International IEEE
EMBS Conference, Chicago, 2014, accepted for publication.
[18] A. Rouhandeh, C. Joslin, Z. Qu and Y. Ono, "Soft-tissue artefact
assessment and compensation in hip joint kinematics using motion
capture data and ultrasound depth measurements," International
Conference on Biomedical Engineering and Systems, Prague, 2014,
accepted for publication.