Superior Retinacular Artery Did Not Occlude in a Rat Model of the Non-Traumatic Osteonecrosis of the Femoral Head
| Autor: | Satoshi Watanabe, Ima Kosukegawa, Satoshi Nagoya, Hideki Hyodoh, Kenji Tateda, Nobuyuki Takahashi, Junya Shimizu, Toshihiko Yamashita, Shunichiro Okazaki, Keisuke Mizuo |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Pathology
medicine.medical_specialty Necrosis business.industry medicine.drug_class Imiquimod Avascular necrosis 030224 pathology medicine.disease 01 natural sciences Surgery 010309 optics 03 medical and health sciences Femoral head 0302 clinical medicine medicine.anatomical_structure Methylprednisolone Ventricle 0103 physical sciences medicine Corticosteroid medicine.symptom business medicine.drug Artery |
| Zdroj: | Open Journal of Orthopedics. :144-149 |
| ISSN: | 2164-3016 2164-3008 |
| Popis: | Non-traumatic osteonecrosis of the femoral head (ONFH) is believed to be avascular necrosis. Certainly, a disruption of a supplying artery induces necrosis in the supplying artery-dominant region. However, when an abnormality such as cell apoptosis, or another reason, is developed in the supplying artery-dominant region, it induces a disruption of the supplying artery. Therefore, to prove that ONFH is avascular necrosis, it is necessary to demonstrate the disruption of the supplying artery prior to histological osteonecrosis development. Here we investigate histologically, using a rat model, whether disruption of the supplying artery occurs before the initial development of ONFH following corticosteroid treatment. Rats were given imiquimod and methylprednisolone, and were sacrificed 1, 2, 3, 7 or 14 days after the last injection. At the sacrifice, the rat was perfused with 20 ml black Indian ink through the left ventricle. ONFH was observed in the Imiquimod + Methylprednisolone group at 7 and 14 days. The osteonecrotic area was not stained with perfused black Indian ink. However, the lateral portion of the femoral head near the superior retinacular artery was stained with the ink. In conclusion, the present study shows that the superior retinacular artery did not occlude before the initial development of ONFH histologically in rats. |
| Databáze: | OpenAIRE |
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