Table 5.

Summary-1

Authors	Study design	Age	Sex M: F	Previous treatment	Intervention	Pt had surgery	Final analysis	Level of study
Chan et al. [21]	Case series retrospective	37.2 (24–58)	26:4	Yes	HVIGI 10 mL 0.5% bupivacaine 25 mg hydrocortisone 4 × 10 ml of normal saline	0	21	IV
Humphrey et al. [22]	Case series prospective	43.5 ± 11.6	7:4	Yes	HVIGI 10 mL 0.5% bupivacaine 25 mg hydrocortisone 4 × 10 mL normal saline	0	11	IV
Maffulli et al. [20]	Case series prospective	37.5 (2263)	69:25	Yes	HVIGI 10 ml 0.25% bupivacaine 62,500 U aprotinin	8	87	IV
Wheeler et al. [23]	Case series retrospective two groups	50.6 ± 11.3	14:20	Yes	Group 1: 10 ml 1% lidocaine +40 ml N/saline HVIGI Group 2: dry needling + HVIGI. 10 ml 1% lidocaine +20 ml N/saline	Group 1:3 Group 2:6	34	III.