Table 1.
Score classification of the histopathological lesions in the implant samples at each surgical removal time of a horse implanted with six polymers of poly(lactic acid) (PLA). Intensity of lesions was classified as mild (1), moderate (2), marked (3), and severe (4).
| Polymer | Capsule Characterization | Infiltrate/ Inflammation |
Cellular Growth | Phagocytosis | Angioplasia |
|---|---|---|---|---|---|
| PLA24 | 1 | 1 | 1 | 2 | 1 |
| PLA24F | 2 | 1 | 3 | 1 | 2 |
| PLA28 | 2 | 2 | 2 | 1 | 1 |
| PLA34 | 2 | 2 | 3 | 1 | 2 |
| PLA38 | 3 | 3 | 4 | 3 | 2 |
| PLA57 | Ns | Ns | Ns | Ns | Ns |
PLA24: 24 weeks following implantation; PLA24F: 24 weeks following implantation, formalin-fixed; PLA28: 28 weeks following implantation PLA34: 34 weeks following implantation; PLA38: 38 weeks following implantation; PLA57: 57 weeks following implantation. Ns: not scored.