| Autor: |
Wallace, A., Strachan, R., Blane, A., Best, J., Hughes, S., Wallace, A L, Strachan, R K, Best, J J, Hughes, S P |
| Zdroj: |
Skeletal Radiology; May1992, Vol. 21 Issue 4, p241-245, 5p |
| Abstrakt: |
Imaging with technetium-99m methylene diphosphonate (99mTc-MDP) is established in the diagnosis of infection, neoplasia and ischaemic necrosis in orthopaedic practice, but its role in fracture healing is less well-defined. Previous studies have shown a relationship between fracture site activity (region A), activity in adjacent normal bone (region C) and time to union. The predictive value of the A/C ratio of the image obtained 300-800 s after injection was assessed in a prospective study of 50 patients with closed tibial fractures managed with plaster casts, external fixators and intramedullary nails. There were significant differences in absolute uptake and A/C ratio between the three groups (P less than 0.05), but this was not related to time to union. Reamed nailing alters the distribution of 99m-Tc-MDP uptake so as to reduce the A/C ratio (1.10 +/- 0.20), but there is a promising role for early phase bone scanning in non-operative (A/C = 1.40 +/- 0.21) or externally fixed (A/C = 1.26 +/- 0.22) fractures in conjunction with other non-invasive methods of monitoring the biomechanical environment. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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