Table 5 The aiming device was utilized and tested by spine fellow and orthopaedic resident to apply in two patients
From: The aiming device for cervical distractor pin insertion: a proof-of-concept, feasibility study
No. | Parameters | Patient 1 | Patient 2 | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
C3 | C4 | C5 | C6 | C3 | C4 | C5 | C6 | |||
1. | No of attempts need (times) | - | - | 1 | 1 | 2 | 2 | 2 | 1 | |
2. | Average duration for pin insertion (minutes) | - | - | 3.5 | 3.5 | 5.0 | 3.5 | 3.5 | 4.0 | |
3. | Angle of pin insertion (degrees) | Superior Endplate Slope | - | - | 5.0 | 4.0 | 7.0 | 7.0 | 6.0 | 8.0 |
Inferior Endplate Slope | - | - | 4.0 | 4.0 | 6.0 | 8.0 | 6.0 | 5.0 | ||
SE-CP | - | - | 3.0 | 2.0 | 1.0 | 2.5 | 1.5 | 4.0 | ||
IE-CP | - | - | 7.0 | 3.0 | 6.0 | 9.0 | 6.0 | 3.0 | ||
4. | Radiation exposure | Intraoperative fluoroscopy did not use to guide the aiming device and insert the Caspar pins in all levels, just used for checking a lateral image once the aiming device was in place. | ||||||||