How many letters does the top answer for “a joint between the distal end of the radius and the proximal row of carpal bones” have?

The most common answer is carpus (6 letters).

Crossword clue: a joint between the distal end of the radius and the proximal row of carpal bones

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

carpus 6 letters wn-def

a joint between the distal end of the radius and the proximal row of carpal bones

wrist 5 letters wn-def

a joint between the distal end of the radius and the proximal row of carpal bones