{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,27]],"date-time":"2026-10-27T15:31:39Z","timestamp":1793115099032,"version":"4.5.0"},"reference-count":45,"publisher":"SAGE Publications","issue":"8","license":[{"start":{"date-parts":[[2021,8,1]],"date-time":"2021-08-01T00:00:00Z","timestamp":1627776000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Orthopaedic Journal of Sports Medicine"],"published-print":{"date-parts":[[2021,8,1]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Prospective studies evaluating second-look imaging of meniscus root repair using a transtibial pull-out technique are limited; therefore, optimal surgical indications and the technique for meniscus root repair remain uncertain.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Hypothesis:<\/jats:title>\n                    <jats:p>It was hypothesized that there would be a high rate of healing, improvement in meniscal extrusion, and prevention of articular cartilage degeneration and subchondral bone abnormalities after meniscus root repair.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Study Design:<\/jats:title>\n                    <jats:p>Case series; Level of evidence, 4.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>Consecutive patients undergoing transtibial root repair were prospectively enrolled at 2 orthopaedic centers between March 2017 and January 2019. Pre- and postoperative magnetic resonance imaging (MRI) scans were reviewed by a musculoskeletal radiologist in a blinded fashion for meniscal healing, quantification of extrusion, articular cartilage grade, subchondral bone changes, and coronary\/meniscotibial ligament abnormalities. Given persistent extrusion observed on postoperative MRI scans, an additional 10 patients gave consent and were enrolled for immediate (before weightbearing) postoperative MRI scans.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>A total of 45 patients (16 male, 29 female; mean \u00b1 standard deviation age, 42.3 \u00b1 12.9 years; body mass index, 31.6) were prospectively enrolled in the study; there were 47 meniscus root repairs: 29 medial and 18 lateral (2 with both). Postoperative MRI was obtained at an average of 6.3 months (range, 5.1-8 months); 98% of meniscal repairs had evidence of healing. Mean extrusion increased significantly, from 1.9 \u00b1 1.5 mm preoperatively to 2.6 \u00b1 1.4 mm postoperatively ( P = .03). There was no significant progression of chondromalacia grade, subchondral edema, insufficiency fracture, subchondral cysts, or subchondral collapse. In the additional 10-patient cohort, the mean preoperative extrusion (1.6 \u00b1 1.2 mm) was not significantly different from that immediately postoperatively (2.0 \u00b1 1.0 mm; P = .23).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Prospective MRI analysis of transtibial meniscus root repair confirmed a high rate of meniscal healing and no observable progression of cartilage degeneration or subchondral bone abnormalities at the short-term follow-up. However, meniscal extrusion worsened in the first 6 months after surgery.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Registration:<\/jats:title>\n                    <jats:p>NCT03037242 ( ClinicalTrials.gov identifier).<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/23259671211023774","type":"journal-article","created":{"date-parts":[[2021,8,16]],"date-time":"2021-08-16T14:09:30Z","timestamp":1629122970000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":54,"title":["Association Between Transtibial Meniscus Root Repair and Rate of Meniscal Healing and Extrusion on Postoperative Magnetic Resonance Imaging: A Prospective Multicenter Study"],"prefix":"10.1177","volume":"9","author":[{"given":"Aaron J.","family":"Krych","sequence":"first","affiliation":[{"name":"Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, Rochester, Minnesota, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"suffix":"III","given":"Richard F.","family":"Nauert","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, Rochester, Minnesota, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bryant M.","family":"Song","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, Rochester, Minnesota, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Corey S.","family":"Cook","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Columbia Orthopedic Group, Columbia, Missouri, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adam C.","family":"Johnson","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, Rochester, Minnesota, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Patrick A.","family":"Smith","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, Columbia Orthopedic Group, Columbia, Missouri, USA."},{"name":"Department of Orthopedic Surgery, University of Missouri, Columbia, Missouri, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael J.","family":"Stuart","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery and Sports Medicine, Mayo Clinic, Rochester, Minnesota, 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