Vascular supply to flexor tendons is by four transverse communicating branches of digital arteries. DIPJ, Distal interphalangeal joint; FDP, flexor digitorum profundus; FDS, flexor digitorum sublimis; MPJ, metacarpophalangeal joint; PIPJ, proximal interphalangeal joint; VBP, vinculum breve profundus; VBS, vinculum breve superficialis; VLP, vinculum longum profundus; VLS, vinculum longum superficialis.