{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,5]],"date-time":"2026-10-05T12:51:55Z","timestamp":1791204715324,"version":"4.2.0"},"reference-count":23,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"3","license":[{"start":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T00:00:00Z","timestamp":1784073600000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2026,9]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Introduction:<\/jats:title>\n                    <jats:p>Sarcopenia, the loss of muscle mass and function, is closely linked to poor health and has been associated with inferior outcomes in total hip arthroplasty (THA). Psoas Muscle Index (PMI) is a radiographic metric inversely correlated with sarcopenia. It was hypothesized that low PMI patients would have worse outcomes following THA.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>A retrospective review of 515 patients who underwent robotic primary THA between 2014 and 2022 at a single, urban, academic health system with 2-year follow-up data was performed. Psoas Muscle Index was calculated from preoperative computed tomography imaging of the pelvis. Patient baseline demographics, laboratory values, perioperative data, and outcomes were collected from chart review.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      Low PMI occurred in 56 (10.8%) of 515 patients. There were no differences in readmissions or reoperations (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.51;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.58). Low PMI was associated with higher HOOS, JR score at 2 weeks and greater improvement from baseline (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.034;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.037), as well as lower Patient-Reported Outcomes Measurement Information System Pain Intensity at 3 months and greater reductions from baseline (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.038;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.013).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Psoas Muscle Index did not reliably predict surgical outcomes following THA, and low PMI was associated with better patient-reported outcome measures after surgery. Further investigation into other means of diagnosing sarcopenia may be warranted.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1097\/bh9.0000000000000056","type":"journal-article","created":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T13:00:10Z","timestamp":1784120410000},"page":"135-140","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":0,"title":["Is psoas muscle index an effective predictor of outcomes following robotic total hip arthroplasty?"],"prefix":"10.1097","volume":"84","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9360-736X","authenticated-orcid":false,"given":"Olivia","family":"Schaffer","sequence":"first","affiliation":[{"name":"Department of Orthopedic Surgery, NYU Langone Orthopedic Hospital, New York, New York"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Braden V.","family":"Saba","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, NYU 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