Ultrasound Guided Stellate Ganglion Block in Postmastectomy Pain Syndrome: A Comparison of Ketamine versus Morphine as Adjuvant to Bupivacaine

Table 3

Flexion of the arm before and after injections among the three groups using goniometry measured by degree (°).

Range of motion (𝑛=59)	Group I	Group II	Group III
	(𝑛=20)	(𝑛=19)	(𝑛=20)
Flexion before injection	94 ± 16.8	98.4 ± 11.2	90.5 ± 20.6
Flexion after the 1st injection	122.5 ± 14.4	124.2 ± 12.16	121 ± 13.7
Flexion after the 2nd injection	126.5 ± 11.8	127.4 ± 10.4	126 ± 8.2
Flexion after the 3rd injection	129.5 ± 8.8	130 ± 10	122.6 ± 24