A Robotic Cadaveric Gait Simulator With Fuzzy Logic Vertical Ground Reaction Force Control

Comparison of transfer sites for flexor digitorum longus in a cadaveric adult acquired flatfoot model

“…Each specimen was then mounted in the RGS (Fig. ), a custom cadaveric loading device based on an R2000 parallel robot (Mikrolar, Inc; Hampton, NH) . The RGS moved a force plate in series with a pressure plate (i.e., the ground) with inverse motion with respect to the fixed tibia.…”

“…2), a custom cadaveric loading device based on an R2000 parallel robot (Mikrolar, Inc; Hampton, NH). 15,16 The RGS moved a force plate in series with a pressure plate (i.e., the ground) with inverse motion with respect to the fixed tibia. Stance phase simulations were performed in 4.09 s. Tibia kinematics were prescribed from in vivo data from 10 symptomatic pes planus subjects.…”

Passive engineering mechanism enhancement of a flexor digitorum longus tendon transfer procedure

“…The RGS is composed of a R2000 6‐degree of freedom parallel robot (Mikrolar, Inc.; Hampton, NH), force plate (Kistler Instrument Corp.; Amherst, NY), nine linear tendon force actuators (Exlar Corp., Chanhassen, MN) with in‐series load cells (Transducer Techniques Inc., Temecula, CA), a real time PXI embedded controller (National Instruments Corp., Austin, TX), and a computer interface (Fig. ) . To simulate stance phase, the RGS moves the force plate (i.e., the ground) to create inverse motion with respect to the fixed cadaveric tibia while synchronously applying dynamic tensile forces to the extrinsic tendons via the actuator‐load cell systems and proportional‐integral‐derivative (PID) controllers.…”

“…The objective of this proof‐of‐concept study was to determine if a novel PEM‐enhanced FDL tendon transfer procedure improves treatment of Stage II PTTD. To quantify improvement, we sought to characterize the pedobarographic and kinematic effects of PEM‐enhancement using a cadaveric flatfoot model and a robotic gait simulator (RGS) . We hypothesized that PEM‐enhancement would increase the PTT force applied to the medial longitudinal arch to better restore physiologic gait parameters.…”

Image haze removal using a hybrid of fuzzy inference system and weighted estimation

“…Fuzzy inference systems have been widely adopted to solve practical problems in areas such as control systems, [36][37][38] decision marking, 39 pattern recognition, 1 system modeling, 40 robotics, 41,42 and medical imaging. Fuzzy inference systems have been widely adopted to solve practical problems in areas such as control systems, [36][37][38] decision marking, 39 pattern recognition, 1 system modeling, 40 robotics, 41,42 and medical imaging.…”