ɪf θɹəmbˈoʊsɪs dɪsɹˈʌpts blˈʌd flˈoʊ ɪnðɪ ɛkstˈɜːnəl ˈɪliˌæk sˈɪstəmz, ðɪ ɪntˈɜːnəl ˈɪliˌæk tɹˈɪbjuːtˌɛɹiz ˈɔfɚɹ ɐ mˈeɪdʒɚ ɹˈaʊt ʌv vˈɛnəs ɹᵻtˈɜːn fɹʌmðə fˈɛmɚɹəl sˈɪstəm.
If thrombosis disrupts blood flow in the external iliac systems, the internal iliac tributaries offer a major route of venous return from the femoral system.