{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T07:39:39Z","timestamp":1777880379480,"version":"3.51.4"},"reference-count":38,"publisher":"SAGE Publications","issue":"8","license":[{"start":{"date-parts":[[2022,8,1]],"date-time":"2022-08-01T00:00:00Z","timestamp":1659312000000},"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":[[2022,8,1]]},"abstract":"<jats:sec>\n                    <jats:title>Background:<\/jats:title>\n                    <jats:p>Medial patellofemoral ligament (MPFL) reconstruction is performed to treat recurrent patellar instability. Measurement of joint pain and function at the time of surgery has been demonstrated to be a predictor of the final outcomes in many surgical procedures.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Purpose\/Hypothesis:<\/jats:title>\n                    <jats:p>The purpose of this study was to evaluate the relationship between baseline patient characteristics, mental health, and intraoperative findings and patient-reported knee pain and function at the time of MPFL reconstruction. We hypothesized that patient characteristics and associated pathology would be associated with the degree of pain and dysfunction.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Study Design:<\/jats:title>\n                    <jats:p>Cross-sectional study; Level of evidence, 3.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods:<\/jats:title>\n                    <jats:p>Included were skeletally mature patients who underwent unilateral open MPFL reconstruction between 2015 and 2020 at a single institution. Baseline descriptive information was collected, and the following outcome measures were administered preoperatively: the Veterans RAND 12-Item Health Survey Mental Component Score (VR-12 MCS) and the Knee injury and Osteoarthritis Outcome Score (KOOS) Pain, Physical Function Short Form (PS), and Quality of Life (QoL) subscales. Intraoperative findings were collected in a standardized format. Patient characteristics, preoperative variables, intraoperative findings, and VR-12 MCS were used as risk factors, and multivariate analysis was conducted to assess for relationships with the KOOS subscale scores.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>In total, 201 patients with patella dislocations were included in this analysis. Intraoperatively, 122 patients (60.7%) had either normal cartilage or grade 1 or 2 cartilage injury, 79 patients (39.3%) had grade 3 or 4 cartilage injury, 35 patients (17.4%) had a loose body, and 3 patients (1.49%) had evidence of synovitis. Younger age ( P = .012), male sex ( P &lt; .001), never having smoked ( P = .029), and lower baseline VR-MCS ( P &lt; .001) were significantly associated with higher baseline KOOS Pain scores. Older age ( P = .035), female sex ( P = .003), higher body mass index ( P = .005), and lower baseline VR-12 MCS ( P &lt; .001) were significantly associated with higher baseline KOOS PS scores. Younger age ( P = .003), male sex ( P &lt; .001), lower baseline VR-12 MCS ( P &lt; .001), and no dysplasia ( P = .023) were significantly associated with higher baseline KOOS QoL scores.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Patient age, sex, and baseline VR-12 MCS were associated with all 3 baseline KOOS subscale scores, whereas intraoperative findings outside of trochlear dysplasia were not associated with any of the KOOS subscale scores.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/23259671221116150","type":"journal-article","created":{"date-parts":[[2022,8,26]],"date-time":"2022-08-26T18:31:01Z","timestamp":1661538661000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":5,"title":["Factors Associated With Pain and Function Before Medial Patellofemoral Ligament Reconstruction"],"prefix":"10.1177","volume":"10","author":[{"given":"Robert M.","family":"Corey","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery, Guthrie Clinic, Geisinger Commonwealth School of Medicine, Scranton, Pennsylvania, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joseph","family":"Rabe","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Summa Health, Akron, Ohio, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sercan","family":"Yalcin","sequence":"additional","affiliation":[{"name":"Department of Orthopaedics & Rehabilitation, Yale School of Medicine, New Haven, Connecticut, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul","family":"Saluan","sequence":"additional","affiliation":[{"name":"Cleveland Clinic Orthopaedic and Rheumatologic Institute, Cleveland, Ohio, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lutul D.","family":"Farrow","sequence":"additional","affiliation":[{"name":"Cleveland Clinic Orthopaedic and Rheumatologic Institute, Cleveland, Ohio, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2022,8,26]]},"reference":[{"key":"bibr1-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1177\/0363546518803936"},{"key":"bibr2-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-016-4117-y"},{"key":"bibr3-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1016\/S0278-5919(02)00031-5"},{"key":"bibr4-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1177\/0363546516663498"},{"key":"bibr5-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-013-2650-5"},{"key":"bibr6-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1007\/s11999-016-4770-y"},{"key":"bibr7-23259671221116150","unstructured":"Boston University School of Public Health. About the VR-36\u00d3, VR-12\u00d3 and VR-6D\u00d3. Accessed August 14 2022. https:\/\/www.bu.edu\/sph\/about\/departments\/health-law-policy-and-management\/research\/vr-36-vr-12-and-vr-6d\/"},{"key":"bibr8-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1097\/01.blo.0000092983.12414.e9"},{"key":"bibr9-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1097\/01.jsm.0000157315.10756.14"},{"key":"bibr10-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1177\/0363546517704178"},{"key":"bibr11-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1177\/2325967119844265"},{"issue":"6","key":"bibr12-23259671221116150","first-page":"434","volume":"8","author":"D\u2019Ambrosi R","year":"2021","journal-title":"Children (Basel)"},{"key":"bibr13-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1097\/JSA.0b013e31803035ae"},{"key":"bibr14-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1007\/s00264-009-0933-8"},{"key":"bibr15-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1007\/BF01552649"},{"key":"bibr16-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1177\/0363546510370279"},{"key":"bibr17-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1097\/00007632-199512150-00011"},{"key":"bibr18-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1186\/1477-7525-11-64"},{"key":"bibr19-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1177\/0363546519888467"},{"key":"bibr20-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1097\/BPO.0000000000000674"},{"key":"bibr21-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1055\/s-0034-1398373"},{"key":"bibr22-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1177\/0363546512472873"},{"issue":"2013","key":"bibr23-23259671221116150","first-page":"916530","author":"Li Y","year":"2013","journal-title":"Biomed Res Int"},{"key":"bibr24-23259671221116150","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.20.00020"},{"key":"bibr25-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-0838.2011.01426.x"},{"key":"bibr26-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1177\/0363546516644218"},{"key":"bibr27-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1016\/S0749-8063(03)00401-8"},{"key":"bibr28-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1186\/1471-2474-7-38"},{"key":"bibr29-23259671221116150","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.18.00767"},{"key":"bibr30-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1186\/1477-7525-1-64"},{"key":"bibr31-23259671221116150","doi-asserted-by":"publisher","DOI":"10.2519\/jospt.1998.28.2.88"},{"issue":"4","key":"bibr32-23259671221116150","first-page":"1037","volume":"26","author":"Sanders TL","year":"2018","journal-title":"Knee Surg Sports Traumatol Arthrosc"},{"key":"bibr33-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1007\/s11136-008-9418-2"},{"key":"bibr34-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1097\/BLO.0b013e31802eb40a"},{"key":"bibr35-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1136\/bjsports-2016-096456"},{"key":"bibr36-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1177\/2325967117726521"},{"key":"bibr37-23259671221116150","doi-asserted-by":"publisher","DOI":"10.2106\/JBJS.O.00444"},{"key":"bibr38-23259671221116150","doi-asserted-by":"publisher","DOI":"10.1007\/s00167-018-5062-8"}],"container-title":["Orthopaedic Journal of Sports Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/23259671221116150","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/23259671221116150","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/23259671221116150","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T00:09:31Z","timestamp":1777594171000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/23259671221116150"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,8,1]]},"references-count":38,"journal-issue":{"issue":"8","published-print":{"date-parts":[[2022,8,1]]}},"alternative-id":["10.1177\/23259671221116150"],"URL":"https:\/\/doi.org\/10.1177\/23259671221116150","relation":{},"ISSN":["2325-9671","2325-9671"],"issn-type":[{"value":"2325-9671","type":"print"},{"value":"2325-9671","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,8,1]]},"article-number":"23259671221116150"}}