Growth Plate Reappearance after Closure in Ankle Radiography for Trauma
"Bone growth plates or physis are present at the end of long bones and are responsible for longitudinal growth. These plates consist of 4 layers and are lucent in radiography as a line perpendicular to the longitudinal axis, Because of cartilage layer x-ray absorption is less than calcified bone. Gradually increases with age and bone maturity these line will be narrower and as longitudinal bone growth stops, the line disappears. This phenomenon occurs at different ages in different bones of the skeleton but with complete maturity at the age of 19, all growth plates are closed and sclerosed. Re-appearing after closing is uncommon. We introduce two young patients in this study due to trauma have been treated for an ankle cast and the growth plates of tibia and fibula in their control X-ray was re-appeared. Subchondrel Bone Resorbtion is a known phenomenon that will occur after 6 to 8 weeks immobility in any bone. The lucent line caused by imbalance in osteoblast and osteoclast activity and bone absorption. Re-appearing of growth plates can be caused by reversed ossification and bone absorption."
The cited studies may lead to clues on reversed ossification but I could not get access to them:
Effects of tiludronate on bone loss in paraplegic patients
The other links I could find don't seem to have a direct relation to reverse ossification just bone resorption.
Please help out if you know Persian or are an expert at translation documents(Google Translate doesn't like multiple columns).
Some selected translations(manually copying and pasting):
Figure 1: The graph occurs when the ankle and a half before casting
Figure 7: The graph and profile ankle occurred 45 days after treatment
Some notes in my feeble attempts to translate:
"The resurgence of growth plate can be absorbed by tissue"
"Treatment, the growth plates of the tibia and fibula appeared again."
"Patients can reverse the growth plate of the bone at the growth plate cartilage of the past"