Flexor tendon zones describe anatomical regions of the fingers used for describing injuries. This statement is:

• A. True
• B. False
• C. Only applies to the thumb
• D. Only used in pediatric patients

Answer: (A)

Flexor tendon zones segment the finger and thumb into defined regions to describe where an injury occurs. This labeling is used widely in hand surgery to communicate location, guide surgical planning, and predict outcomes, because each zone has distinct tendon and pulley anatomy that affects repair and rehabilitation. For example, zone II—often called “no-man’s land”—brings together both FDS and FDP within a confined sheath, making injuries there particularly challenging and influencing how repairs are approached. This zoning system applies to injuries of the flexor tendons across the hand, including adults and children, not just the thumb.