Segmenting Scratches from an image

I'm new to the image processing world. I have an image of a femeral head with various scratches on it. I'm trying to find a way to register where these scratches are located. I wasn to try to segment them out based on color but I'm not sure where to start. Thank you for any help.

Edit: Thanks for the info on how to share the file. He is an example image <http://tinypic.com/view.php?pic=9ftuuu&s=7>

My goal is to locate the start and end points of individual scracthes.

[Sean de Wolski]

You really have to show us an image with descriptions of what is good/bad/wanted.

http://www.mathworks.com/matlabcentral/answers/7924-where-can-i-upload-images-and-files-for-use-on-matlab-answers

[Image Analyst]

Basically locate the scratches first, then use the scratch locations to find the "missing" data through roifill(), interp2(), or similar methods. Post an image like Sean says, then the discussion can be productive.