This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Plastic & Reconstructive Surgery, Subject name: Surgery
Felon's incision: 
Select and explain. 
A. Transverse, B. Longitudinal, C. Bilateral longitudinal, D. Fish mouth
B: Longitudinal
Answer: B: Longitudinal 
Explanation: Ans. (b) LongitudinalHighlights regarding Felon (Pulp space infection) drainage:* Basic principle: Longitudinal incision distal to DIP crease always.Mid-lateral approach * Indicated for deep felons with no foreign body and not discharging* Incision on ulnar side for digits 2, 3 and 4 and radial side for thumb and digit 5 (Little finger).Volar longitudinal approach* Most direct access* Indicated for superficial felons, foreign body penetration or visible drainage.Incisions to avoid:* Fish mouth incisions: Leads to unstable finger pulp* Double longitudinal or transverse incision: Injury to digital nerve and artery.