How do doctors break bones surrounded by an operation?

When surgeons need to break bones during an operation, for limb correction for example, how do they do it? What tools are used?
Answers:
wud u believe me if i told u tht they also in addition to using a sledge hammer use a special type of chain saw.. Source(s): personal experiance
See answers from HSS and Barb M. It's very raucous, very messy [ would you believe - bone splinters and bone dust! ], and requires a LOT of skill to do it properly. Source(s): RN
That's right...hammer and a bone saw.
With a medically issued small hammer!
Most of the time, power tools are used.

Here's a bone being sawed for knees replacement:
http://www.genufix.com/TKR3.JPG
The things on the sides are retractors, the saw is at the top.

There is also the Gigli saw, which is a flexible wire that saws through bone:
http://www.mindworks.pk/images/products/…

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