Between the carpal bones.
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in·ter·car·pal .int-ər-'kär-pəl adj situated between, occurring between, or connecting carpal bones <an \intercarpal dislocation> <an \intercarpal joint> <\intercarpal ligaments>
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in·ter·car·pal (in″tər-kahrґpəl) between the carpal bones.Medical dictionary. 2011.