PTA Physical Therapy Assistant

Answer: B - Zone 2 is called Bunnell’s “no-man’s land”.

Zone 2 is the critical area of pulleys between the insertion of sublimus and the distal palmar crease.

Zone 1 is the area between the insertions of the profundus tendon at the distal phalanx to the joint distal to the insertion of the sublimus.

Zone 3 is the “area of lumbrical origin”. It is from the pulleys to the distal margin of the transverse carpal ligament.

Zone 5 is the area proximal to the transverse carpal ligament.