{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T23:19:20Z","timestamp":1791501560558,"version":"4.3.4"},"reference-count":38,"publisher":"SAGE Publications","issue":"10","license":[{"start":{"date-parts":[[2022,10,1]],"date-time":"2022-10-01T00:00:00Z","timestamp":1664582400000},"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":[[2022,10,1]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Although the function of vitamin D in bone metabolism has been well studied, the question remains whether vitamin D deficiency impairs tendon healing after rotator cuff repair.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Purpose:<\/jats:title>\n                    <jats:p>To investigate the correlation between preoperative vitamin D deficiency and the retear rate and pain after arthroscopic rotator cuff repair.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Study Design:<\/jats:title>\n                    <jats:p>Cohort study; Level of evidence, 3.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>Patients with full-thickness rotator cuff tears who underwent arthroscopic rotator cuff repair between January 2018 and August 2019 were enrolled. Included patients were divided into a control group (vitamin D level \u226520 \u03bcg\/L) and a deficiency group (vitamin D level &lt;20 \u03bcg\/L). We investigated the association between preoperative vitamin D level and patient characteristics, MRI findings, pain and function scores (visual analog scale [VAS] for pain; Constant-Murley; University of California, Los Angeles; and American Shoulder and Elbow Surgeons scores), and healing status using the Pearson or Spearman correlation coefficient. The clinical characteristics were compared between the groups using the chi-square test or Fisher exact test.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>Included were 89 patients (control group, 44 patients; deficiency group, 45 patients). The mean vitamin D levels were 25.07 \u00b1 5.38 and 14.61 \u00b1 3.43 \u03bcg\/L in the control and deficiency groups, respectively ( P &lt; .001); otherwise, there were no significant differences between the groups in the variables under study. Vitamin D levels were not related to age, symptom duration, tear size, extent of retraction, VAS pain score preoperatively and at 6 and 24 months postoperatively, or any function scores. Supraspinatus fatty infiltration and VAS scores at 1 and 3 months postoperatively were significantly associated with vitamin D level ( r = \u20130.360, \u20130.362, and \u20130.316, respectively; P &lt; .05 for all). VAS scores were significantly lower in the control group than in the deficiency group at postoperative 1 month (1.09 \u00b1 0.56 vs 1.47 \u00b1 0.66, respectively) and 3 months (1.14 \u00b1 0.77 vs 1.44 \u00b1 0.66) ( P &lt; .05 for both). The retear rate was significantly lower in the control group than in the deficiency group (9.09% vs 26.67%, respectively; P &lt; .05).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Our study revealed that preoperative vitamin D deficiency was associated with a higher retear rate and early pain (1 and 3 months) after arthroscopic rotator cuff repair.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/23259671221130315","type":"journal-article","created":{"date-parts":[[2022,10,17]],"date-time":"2022-10-17T18:52:54Z","timestamp":1666032774000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":21,"title":["Association of Preoperative Vitamin D Deficiency With Retear Rate and Early Pain After Arthroscopic Rotator Cuff Repair: A Retrospective Cohort Study"],"prefix":"10.1177","volume":"10","author":[{"given":"Jun","family":"Chen","sequence":"first","affiliation":[{"name":"Department of Orthopedics, Dongyang People\u2019s Hospital, Wenzhou Medical University, Dongyang, People\u2019s Republic of China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juexiang","family":"Lou","sequence":"additional","affiliation":[{"name":"Department of Orthopedics, Dongyang People\u2019s Hospital, Wenzhou Medical University, Dongyang, People\u2019s Republic of China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weikai","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Orthopedics, Dongyang People\u2019s Hospital, Wenzhou Medical University, Dongyang, People\u2019s Republic of China."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guohong","family":"Xu","sequence":"additional","affiliation":[{"name":"Department of Orthopedics, Dongyang People\u2019s Hospital, Wenzhou Medical University, Dongyang, People\u2019s Republic of China."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2022,10,17]]},"reference":[{"key":"bibr1-23259671221130315","doi-asserted-by":"publisher","DOI":"10.5312\/wjo.v6.i2.211"},{"key":"bibr2-23259671221130315","doi-asserted-by":"publisher","DOI":"10.1177\/0363546513505421"},{"issue":"3","key":"bibr3-23259671221130315","doi-asserted-by":"crossref","first-page":"729","DOI":"10.1002\/jcp.22004","volume":"222","author":"Bahar-Shany K","year":"2010","journal-title":"J Cell 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