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. Author manuscript; available in PMC: 2013 May 7.
Published in final edited form as: J Pediatr Orthop. 2009 Mar;29(2):124–129. doi: 10.1097/BPO.0b013e3181982228

FIGURE 7.

FIGURE 7

Manipulation of the variables demonstrates graft diameter is the most critical parameter affecting the volume of physeal injury. The volume of a cylinder increases by the square of the r2 and the height is a function of the angle at which the graft crosses the physis (1/sin θ). sin θ varies from 0 to 1 as you increase to 90 degrees.