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Demographic data, response to physical exam maneuvers, and response to injection were queried from patient records. US and MRI were reviewed by 2 independent musculoskeletal\u2010trained radiologists. Response to injection was considered positive if the patient improved by &gt;2 points on a 0\u2010 to 10\u2010point VAS score. Chi\u2010squared and Fisher exact testing were used to assess for any associations. Sensitivities, specificities, positive predictive values, and negative predictive values were calculated.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Sixty\u2010three patients, age 52.3 \u00b1 17.3 years (mean \u00b1 standard deviation), body mass index 27.4 \u00b1 4.3 kg\/m\n                      <jats:sup>2<\/jats:sup>\n                      , and follow\u2010up 33.6 \u00b1 20.6 months, met inclusion criteria. No physical exam maneuvers, sonographic features, or MRI findings were significantly associated with response to iliopsoas tendon injection (\n                      <jats:italic>P<\/jats:italic>\n                      &gt; .05). Groin pain had a sensitivity of 100% but a specificity of 7%. Snapping hip had a specificity of 82% but a sensitivity of 24%. Pain with resisted straight leg raise (SLR) (sensitivity 62%, specificity 25%) and weakness with resisted SLR (sensitivity 15%, specificity 71%) both were nonreliable. Sonographic bursal distension and tendinosis had low sensitivities (67% and 63%, respectively) and specificities (35% and 32%). Bursal distension on MRI had sensitivity and specificity of 64% and 45%, respectively. Tendon thickening had sensitivity and specificity of 55% and 60%, respectively, and heterogeneity had sensitivity and specificity of 52% and 65%.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Neither physical examination nor US or MRI findings were associated with a positive response to peritendinous iliopsoas corticosteroid injections in patients with suspected IPT.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>III, retrospective comparative trial limited by lack of a reference standard for iliopsoas tendonitis diagnosis.<\/jats:p>\n                  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