Table 1 Patients demography
| HVIGI procedures/patients, n | 28/23 |
| Men/Women, % | 83/17 |
| Mean age in years (range) | 30.3 (19–52) |
| Mean pain duration in months (range) | 33 (12–108) |
| Intervention before HVIGI | |
| ● → Corticosteroid Injections, n (%) | 17 (61%) |
| ● → Shock Wave therapy, n (%) | 1 (4%) |