One is to cast it for five weeks and allow the scar tissue to attack the nearby joints. The other is to use a detachable cast and exercise the joint early on to not allow the scar tissue to accumulate. The ortho surgeon also misdiagnosed the alignment of the bone, which may require surgery later.
Without getting into medical specifics, these two doctors have very different methods of repairing a broken/smashed metacarpal. One that caused damage and the other which does not. One that would have done surgery day one and started exercising the joint to reduce the accumulation of scar tissue. The other who immobilized the joint and let scar tissue attack the hand.
These are polar opposites in approach. Which one is considered the "standard of care." Can you hold a doctor accountable for not following simple precautions?