Jogging support system with portable monitoring device and health manage software.

At MEDINFO 2001 we reported about an ambulatory biosignal memory device. As an application of this system, we have developed a portable jogging monitoring device and studied its application for health management here. This device is a micro processor based system with some sensors necessary to monitor condition of the user during jogging, that is, a heart rate sensor, a GPS sensor and a physical activity sensor. We also have developed PC based health management software that receives jogging data after jogging and stores it as a long term jogging trend data. From these long term data it feeds back the distance completion of jogging on the virtual course. Moreover it can show the trend of jogging time, distance, average heart rate and the user can know his/her own health condition.

Traumatic bilateral locked facet at L4-5: report of a case associated with incorrect use of a three-point seatbelt.

We present a case of traumatic L4-5 bilateral facet dislocation, without neurological deficit, in a 32-year-old female patient, as an unusual seatbelt injury caused by positioning the shoulder harness improperly under her armpit. Open reduction, posterior interbody fusion, and posterior segmental instrumentation were carried out. The aim of this report is to describe this rarely encountered condition and speculate regarding automotive shoulder harness misuse as a potential cause of bilateral locked facet at L4-5, and to emphasize the importance of multidirectional X-ray on first examination. The unusual L4-5 level facet interlocking was attributed to misuse of the automobile shoulder harness. We propose the importance of recognizing this injury and following up on such clues as transverse process fractures and/or widened posterior elements.