This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
What is acceptable angulation after reducing the fracture tibia - a) 5  b) 10  c) 15  d) 20 
Select and explain. 
A. ab, B. bc, C. ad, D. ac
A: ab
Answer: A: ab 
Explanation: Criteria of acceptable reduction

Acceptable varus or valgus angulation is 5°.
Acceptable anterior or posterior angulation is 10°.
Acceptable rotational malalignment is 5°.
Acceptable shortening is 10 mm
Ankle and knee joint surfaces should be parallel