Some aspects of the projects described below are being carried out in collaboration with Prof. A.Misra, an expert in Engineering Mechanics and with Dr. M. Tanzer, an orthopaedic surgeon. The approach involves a combination of in vitro experimental and numerical model studies.
Biomechanics of the menisci and ligaments of the human knee:
The objectives are, at first to determine the mechanical role of these passive tissue structures in the load transmission mechanism of the knee, and then to establish their internal responses corresponding to the determined roles. The approach involves a combination of in vitro experimental numerical model studies. The results are expected to clarify injury and degenerative mechanisms of these structures and to contribute to the establishment of improved treatment procedure and rehabilitation regimen.
Dynamics of the human knee joint:
The objectives are, at first to determine the relative displacement patterns of the three bones of the joint corresponding to habitual dynamic activities, and then to correlate the patterns with the topographies of the articular surfaces of the joint. The approach is primarily in vitro experimental taking advantage of a unique unconstrained dynamic simulator developed specifically for this study. The results are expected to contribute to the improvement in the design of the articular surfaces of the components of knee prosthesis.
Stress-shielding and bone remodelling in resurfaced joints:
The objective is to contribute to the modification and extension of the existing theories of bone remodelling in order to predict with reasonable accuracy the consequence of joint resurfacing surgery on the long term quality of the supporting bone structure. The approach is analytical/numerical and involves correlation of the predictions with the available clinical observations. The results are expected to contribute to the improvement in the design of the components of prosthesis and their method of fixation to the host bone.
Biomechanics of curve progression in adolescent idiopathic scoliosis:
The objective is to identify the mechanical factors associated with the adolescent growth spurt which are instrumental to curve progression in adolescent idiopathic scoliosis. The approach is an analytical/numerical one involving parametric analyses of spine-ribcage models. The results of the study are expected to allow improved prediction of the prognosis of young scoliotic patients.
Biomechanics of the lumbar disc annulus:
The objective is to determine the mechanical properties and failure mechanism of the disc annulus material and to correlate them with the structural features of the bands of the annulus. The approach is primarily in vitro experimental and it is expected to incorporate the results in a more refined model of the lumbar spine to investigate possible biomechanical causes of low-back pain.