Table 6: Needle insertion site, absolute numbers and percentages.
| Site | N° of patients | Use% |
| Humerus | 10 | 10.99% |
| Distal Tibia | 2 | 2.20% |
| Proximal Tibia* | 79 | 86.81% |
| Overall needles used | 91 | 100.00% |
*2 of which are needles used as a second attempt (see previous analysis).