We performed a prospective randomised trial to evaluate the efficacy of pre-operative skin traction for proximal femoral fractures in 311 patients. We found a significant difference in pain score on the evening of admission and the first morning after admission between the groups with traction compared the group without. However, there was no corresponding increase in analgesic requirement during this period. The peak pain score pattern also was different in our population. No other objective benefit can be shown from using skin traction, and its routine use should be abandoned.

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This paper presents a low-power, passive, EPC TM C1G2-compatible UHF RFID tag design implemented in a 90nm CMOS technology. In order to reduce its cost, diode-connected NMOSFETs in a standard CMOS technology is used instead of Schottky diodes. A sub-1V, low temperature-coefficient voltage reference, using self-biased mutual compensation without large resistors, is proposed to save the chip area. To minimize the substantial leakage power in this technology, the baseband processor is designed with sufficient margins for subthreshold power supply. An energy-aware scheme is also implemented. Better power saving is achieved by using the RF envelope as clock and control signal of gating clock