why grafted bone grows so slowly

I had a bone transplant surgical operation in Jan 2007 resulted from wrist Giant Cell Tumor. Surgeon put a plate with screws in my radius area. weeks ago I got a 8-month follow-up x-ray filming to see how's going on with the grafted bone. The doctor told me that grafted bone close to wrist side grows well, however the other side of the grafted bone still has a big gap (near 1cm) with the radius. I am very nervous whether and when the grafted bone will grow together with my radius. Is the gap too big to be covered by the growing grafted bone? Is there any positive treatment to avoid the possible second surgery? Please help me with your knowledge and experience. btw, I am a 27-yr girl. Thanks.



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