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

Table 4

Extension movement before and after injections among the three groups using goniometry measured by degree (°).

Range of motion (𝑛=59)	Group 1	Group 2	Group 3
	(𝑛=20)	(𝑛=19)	(𝑛=20)
Extension before injection	46.5 ± 10.3	51.5 ± 6.8	49.5 ± 13.16
Extension after the 1st injection	63 ± 10.8	68.4 ± 9.5	68 ± 9.5
Extension after the 2nd injection	66 ± 11.87	72.1 ± 7.8*	73 ± 7.3**
Extension after the 3rd injection	67 ± 9.2	73.2 ± 7.5*	76.8 ± 5.8**

∗Group II is statistically significant compared to group I.
**Group III is statistically significant compared to group I.