{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,21]],"date-time":"2026-09-21T13:02:35Z","timestamp":1789995755271,"version":"4.0.1"},"reference-count":24,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"5","license":[{"start":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T00:00:00Z","timestamp":1788220800000},"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>Objectives:<\/jats:title>\n                    <jats:p>Objective activity monitoring may provide scalable, real-world functional data in lumbar spine surgery patients. We evaluated whether preoperative daily step count predicts early postoperative ambulation and patient-reported outcomes (PROs).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and Methods:<\/jats:title>\n                    <jats:p>\n                      We performed a retrospective cohort study of adults undergoing elective lumbar decompression, discectomy, or fusion with remote monitoring of daily step counts (preoperative days 7-1 and postoperative days [PODs] 1\u201328) and longitudinal PROs (Patient-Reported Outcomes Measurement Information System [PROMIS] \u2013 Pain\/Physical\/Mental and Oswestry Disability Index [ODI] at baseline, 6 weeks, 12 weeks, 6 months, and 1 year). Patients were stratified by mean preoperative step count into low activity (&lt;2500 steps\/day) versus normal activity (\u22652500 steps\/day). Between-group comparisons used the Chi-square tests for categorical variables and independent t-tests for continuous variables (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.05).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      Forty-seven patients were included (mean age: 51.8 \u00b1 13.7 years; body mass index: 29.85 \u00b1 5.00), including 21 (44.7%) low-activity and 26 (55.3%) normal-activity patients. Preoperative steps were lower in the low-activity group (1354 \u00b1 639 vs. 5148 \u00b1 2399;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.001). Postoperative step counts did not differ during POD 1\u20137 (717 \u00b1 857 vs. 1342 \u00b1 1468;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.091) but were higher in the normal-activity group during POD 8\u201314 (1515 \u00b1 2048 vs. 2863 \u00b1 2288;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.044) and cumulatively through POD 28 (POD 1\u201328: 1360 \u00b1 1584 vs. 2784 \u00b1 1978;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.010). By POD 8\u201314, 53.8% of normal-activity patients achieved \u22652500 steps\/day versus 14.3% of low-activity patients (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.005). Normal-activity patients reported lower PROMIS Pain at 6 weeks (2.9 \u00b1 2.4 vs. 4.8 \u00b1 2.1;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.011) and 12 weeks (2.4 \u00b1 2.2 vs. 4.0 \u00b1 2.5;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.029) and lower ODI at 12 weeks (17.4 \u00b1 14.7 vs. 29.5 \u00b1 17.7;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.018).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions:<\/jats:title>\n                    <jats:p>Preoperative step count stratifies early postoperative mobility and short-term pain\/disability trajectories after lumbar spine surgery. Objective activity monitoring may support perioperative risk stratification and targeted prehabilitation.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.4103\/jcvjs.jcvjs_43_26","type":"journal-article","created":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T17:00:44Z","timestamp":1789750844000},"page":"500-504","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":0,"title":["Preoperative step count as a predictor of early postoperative mobility and patient-reported outcomes following lumbar spine surgery"],"prefix":"10.4103","volume":"17","author":[{"given":"Junho","family":"Song","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery, Icahn School of Medicine at Mount Sinai, New York, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Austen D.","family":"Katz","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Northwell Health, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Timothy","family":"Hoang","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Icahn School of Medicine at Mount Sinai, New York, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryan","family":"Hoang","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, University of California, Irvine, CA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alex","family":"Ngan","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Northwell Health, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joshua","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Northwell Health, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John J.","family":"Corvi","sequence":"additional","affiliation":[{"name":"Department of 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USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sohrab","family":"Virk","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David","family":"Essig","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Northwell Health, NY, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2026,9,18]]},"reference":[{"key":"R1-20260921","doi-asserted-by":"crossref","first-page":"501","DOI":"10.1186\/s12891-024-07606-8","article-title":"Association between delayed ambulation and increased risk of adverse events after lumbar fusion surgery in elderly patients","volume":"25","author":"Wang","year":"2024","journal-title":"BMC Musculoskelet 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