What is Felon -: (A) Infection of nail fold, (B) Infection of ulnar bursa, (C) Infection of pulp space, (D) Infection of DIP joint
Answer is C. PULP INFECTION (FELON) The distal finger pad is essentially a closed fascial compament filled with compact fat and subdivided by radiating fibrous septa. A rise in pressure within the pulp space causes intense pain and, if unrelieved, may threaten the terminal branches of the digital aery which supply most of the terminal phalanx. Pulp-space infection is usually caused by a prick injury; blackthorn injuries are paicularly likely to become infected. The most common organism is Staphylococcus aureus. The patient complains of throbbing pain in the finger-tip, which becomes tensely swollen, red and acutely tender. Reference- Apley&;s system of ohopaedics 9th edn -pg 432