Research Article
A Mechanical Sensor Designed for Dynamic Joint Angle Measurement
Figure 1
The MGR for dynamic assessment of lower limb joint angles of the (a) hip, (b) knee, and (c) ankle. The MGR is composed of 3 major parts: measurement unit, anchoring unit, and adjustment unit. The architecture of the measuring unit includes a measurement card, a cardholder, a universal joint, a pointer, and a pen. (d) The front view and (e) side view of the measuring unit. (f) The measurement card. Abbreviations: ACU stands for anchoring unit, MU for measurement unit, AJU for adjustment unit, UJ for universal joint, HJ/PM for the two hinge joints configured in parallelogram mechanism, P for pointer, SP for special pen, CH for cardholder, SB for side bars, BB for basement bar, HC for holding coils, HJ for hinge joint, and TB for thrust bearing permitting pivot rotation.