This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Orthopaedics
The appropriate criteria for proceeding with High Tibial osteotomy in a case of Osteoarthritis of knee include the following except: 
Select and explain. 
A. Age more than 65 years., B. Isolated Ahlback grade I or II lateral compartmental arthrosis., C. >90deg arc of motion of the knee., D. Flexion contracture of <15-20deg.
A: Age more than 65 years.
Answer: A: Age more than 65 years. 
Explanation: Ans. A. Age more than 65 years.* General selection criteria for High Tibial osteotomy for genu valgum includea. Age younger than 65 years,b. Isolated Ahlback grade I or II lateral compartmental arthrosis,c. Minimum ligamentous laxity,d. >90deg arc of motion of the knee, ande. A flexion contracture of <15-20deg.