This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thigh, Knee,Leg,Foot & Ankle injuries, Subject name: Orthopaedics
Patient sustains twisting type of injury followed by recurrent locking of knee. Most likely structure to be injured is- 
Select and explain. 
A. Menisci injury, B. Anterior cruciate ligament injury, C. Avulsed tibial tuberosity, D. Lateral collateral ligament injury
A: Menisci injury
Answer: A: Menisci injury 
Explanation: *Twisting type of injury of knee followed by recurrent locking of knee-suggestive of meniscal tear. Causes of Meniscus Injuries * Can result from activities involving pivoting or rotational movements -- i.e. pivoting, sudden stops and turns, kneeling, deep squatting, heavy * Tears in the meni cus of the knee are commonly due to spos-rela ed injuries * Degenerative cha ges of the knee can contribute to a torn meniscus * Meniscal tears may be associated with anterior cruciate ligament tears -- The instability of the knee increases the likelihood of a meniscal tear over time Ref: Murcer 9th/e p.1126-41