{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T09:51:30Z","timestamp":1791539490561,"version":"4.3.4"},"reference-count":8,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T00:00:00Z","timestamp":1791504000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T00:00:00Z","timestamp":1791504000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["arthroscopyjournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Arthroscopy"],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Patellofemoral instability is a 3\u2010dimensional disorder, yet surgical planning remains dominated by axial and coronal measurements. Recent literature reports that greater preoperative sagittal tibial tubercle\u2010trochlear groove (sTT\u2010TG) distance was associated with better quality of life, less pain, and better function after combined sulcus\u2010deepening trochleoplasty and medial patellofemoral ligament reconstruction in patients with high\u2010grade trochlear dysplasia. The finding is compelling because trochleoplasty directly modifies the femoral landmark used to calculate sTT\u2010TG. A greater sTT\u2010TG may, therefore, identify an instability phenotype, particularly responsive to surgical correction of the sagittal mismatch, whether through posteriorization of the trochlear floor during sulcus\u2010deepening trochleoplasty or anteriorization of the tibial tubercle. However, the models explained little outcome variance, postoperative sTT\u2010TG was not measured, the measurement is influenced by tibiofemoral rotation and imaging technique, and nearly 1 in 5 patients also underwent tibial tubercle osteotomy. These limitations preclude definitive conclusions regarding the mechanistic or therapeutic relevance of sTT\u2010TG in the setting of trochleoplasty. At present, sTT\u2010TG should become a part of comprehensive patellar instability phenotyping, but it should not yet independently dictate the indication, procedure, or magnitude of surgical correction.<\/jats:p>","DOI":"10.1002\/arj.70663","type":"journal-article","created":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T09:18:46Z","timestamp":1791537526000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["<i>Editorial Commentary<\/i>\n                    : Sagittal Tibial Tubercle\u2010Trochlear Groove Distance Refines Patellar Instability Phenotyping but Should Not Yet Dictate Surgical Correction"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4063-5815","authenticated-orcid":false,"given":"Jakob","family":"Ackermann","sequence":"first","affiliation":[{"name":"Rush University Medical Center  Chicago Illinois 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patellofemoral joint degenerative cartilage change: A deep learning analysis","volume":"39","author":"Namiri NK","year":"2023","journal-title":"Arthroscopy"},{"key":"e_1_2_3_7_1","first-page":"xx","article-title":"Preoperative sagittal tibial tubercle\u2010trochlear groove distance predicts postoperative outcome in patients undergoing combined trochleoplasty and medial patellofemoral ligament reconstruction","author":"Schmidt S","year":"2026","journal-title":"Arthroscopy"},{"key":"e_1_2_3_8_1","doi-asserted-by":"crossref","first-page":"1002","DOI":"10.1016\/j.arthro.2024.05.023","article-title":"Trochlear dysplasia is associated with increased sagittal tibial tubercle trochlear\u2010groove distance in patients with patellar instability","volume":"41","author":"Ackermann J","year":"2025","journal-title":"Arthroscopy"},{"key":"e_1_2_3_9_1","doi-asserted-by":"crossref","first-page":"3392","DOI":"10.1016\/j.arthro.2025.01.045","article-title":"The sagittal tibial tubercle trochlear\u2010groove distance is not equivalent on magnetic resonance imaging and computed tomography measurements in patients with patellar instability","volume":"41","author":"Ackermann 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