R.A. Minns

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The performance of a footswitch which uses conductive rubber modules in foam, sandwiched between two brass shims in the form of an inner sole placed between the foot and the shoe is reported. Contact switching force decreases with module density, whilst position of the conductivity plugs in the footswitch is irrelevant. Comments on the construction of a(More)
The tibio-fibular interosseous membrane was studied in the scanning electron microscope. It is made up of two fibrous networks, a major one composed of large diameter fibres aggregated into bundles and a fine filamentous network, without a preferred orientation, between these main fibre bundles. Mechanical studies have shown that the interosseous membrane(More)
A quasi-static analysis of axial rotation of the femoral component and the torsional forces at different angles of knee flexion was performed on knee preparations. The meniscal knee design had very much lower axial torque against axial rotation characteristics through the whole range of knee flexion than the total condylar design and could be rotated up to(More)
A 3-component sliding meniscus knee prosthesis was tested mechanically to evaluate the direct loads and the anteroposterior and mediolateral bending moments on the prosthetic components during the loading phase on a pendulum prosthesis testing machine. The bending moments changed with variation of the component positions. Tilting the tibial plateau produced(More)
A new method, in the form of a hypothesis test, is presented that compares the eigenvalues of a multichannel data set to eigenvalues of a synthetic mixture. The synthetic mixture is created from a set of independent components (IC's) that have been demixed from the original data. The IC's are then repropagated from a fictitious source space to a set of(More)
A guide system was designed for use in conjunction with knee arthroplasty instruments. A pin is guided into the upper tibial cortex parallel to the sagittal axis of the femoral component with the patella in its normal position and the knee at 20 degrees of flexion. The holes and/or slots for the tibial component using the appropriate drill guide can now be(More)
Simple bending and torsion and quasi-static physiological loading tests on two commonly used plating designs for internal fixation of the tibia were conducted and compared with a new design of anatomically shaped fixation plate. These simple static tests indicate that the new contoured plating system is mechanically more rigid under these test conditions(More)
The relationship between the applied torque and the load required to pull off the calipers was established on cadavers. Torques of 0.7, 0.8 and 0.9 Newton-metres were applied to a specially adapted skull traction caliper whilst attached to the skull in the normal position when used clinically, and loads were applied in steps of 2 lb up to a maximum of 60(More)