RESULTS	Ultrasound - and palpation-guided injection resulted in significant mean improvements in VAS [ 39.6 + / -9.2 ( ultrasound ) vs 41.5 + / -8 ( palpation ) ] and HTI [ 1.35 + / -0.2 ( ultrasound ) vs 1.3 + / -0.4 ( palpation ) ] .\