This would be a hairline fracture or stress fracture. These only occur in weight bearing bones.
Closed spiral fracture
This type of line usually indicates a spiral fracture, brought about by an excessive amount of torque applied along the axis of the bone.
Greenstick Fracture
fracture depends what kind of brake could be a compound or hairline fracture but mainly a fracture
cancellous bone
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An undisclosed fracture is a broken bone that is not apparent on examination. Often these kind of fractures are only discovered after they are healed.
The shaft of a long bone is the center area, as in the middle of the bone, not at one of the ends. Take a tree as an example - the roots would be one end, the leaves the other end and the shaft would be the trunk.
depending what kind of fracture and severity it can take 5-10 weeks
Greenstick fracture
Any kind of fracture that is possible to be imagined, from a greenstick incomplete nondislocated fracture to a comminuted open severely displaced fracture. The more common fractures are mid-diaphyseal (mid-shaft) fracture of the femur and the tibia, both open and closed, often displaced due to muscular contraction in reponse to trauma.