IPA: /ˌɪn.təˈfæl.ɪn.dʒi.əl/
KK: /ɪnˌtɜr.fəˈlæn.dʒi.əl/
Relating to the joints between the bones of the fingers or toes.
The doctor examined the interphalangeal joint for any signs of injury.
Interphalangeal → It is formed from "inter-" (meaning between) and "phalangeus" (from Greek "phalanges", meaning bones of the fingers or toes) and "-al" (meaning pertaining to). The word describes something that pertains to the joints between the bones of the fingers or toes.
Think of 'inter-' meaning 'between' and 'phalanges' referring to the bones in your fingers or toes — this helps you remember that 'interphalangeal' relates to the joints between those bones.