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Question #135

This injury was sustained by a 4 inch angle grinder with a carbide tip cutting blade.

Image provided by Matthew Vincent, Perth, Western Australia, Australia

Possible injuries include laceration of  
1: the first lumbricalTrueFalse
2: the first dorsal interosseousTrueFalse
3: the extensor tendon to the index fingerTrueFalse
4: sensory branches of the ulnar nerveTrueFalse