This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Orthopaedics
[{'content': 'Gustillo Anderson classification is used for \nSelect and explain. \nA. Open fracture, B. Closed fracture, C. Mal united fracture, D. Non- union of fracture', 'role': 'user'}, {'content': "Answer: A \nExplanation: Gustilo and Anderson classification (Open Fractures) Type Wound sizeLevel of contamination Soft tissue injury Bone injury I<1 cm long Clean Minimal Simple, minimal comminutionII>1 - < 10 cm long Moderate Moderate with some muscle damage Moderate comminutionIIIAUsually >10 cm longHigh Severe crushing Usually comminuted; soft tissue coverage of bone possibleBUsually >10 cm longHigh Very severe loss of coverage; usually requires soft tissue reconstructive surgeryBone coverage poor with moderate to severe comminutionCUsually >10 cm longHigh Very severe loss of coverage plus the requirement of vascular injury repair & soft tissue reconstructionBone coverage poor with moderate to severe comminution(Refer: Mohindra's Fundamentals of Ohopedics, 2nd edition, pg no. 56, 57, 60)", 'role': 'assistant'}]