occurs in occurs in phenotype affects entity inflammatory response Sacroiliac arthritis joint inflammation sacroiliac joint inflammation 2018-09-26T11:58:32Z SI joint inflammation MPheno.ontology MP:0030822 inflammation of one or both of the sacroiliac joints; it may be a symptom of other inflammatory arthritic conditions sacroiliitis sacroiliac arthritis sacro-iliac joint sacroiliac arthritis; sacroiliac joint inflammation