{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T05:19:45Z","timestamp":1788844785438,"version":"build-2803163510"},"reference-count":46,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2025,1,22]],"date-time":"2025-01-22T00:00:00Z","timestamp":1737504000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2025,1,22]],"date-time":"2025-01-22T00:00:00Z","timestamp":1737504000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"},{"start":{"date-parts":[[2025,1,22]],"date-time":"2025-01-22T00:00:00Z","timestamp":1737504000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2025,1,22]],"date-time":"2025-01-22T00:00:00Z","timestamp":1737504000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"content-domain":{"domain":["arthroscopyjournal.org","clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Arthroscopy"],"published-print":{"date-parts":[[2025,8]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To compare the patient\u2010reported outcome (PRO) improvements and cartilage status of trochlear cartilage defects (TCDs) after additional arthroscopic microdrilling versus no treatment for TCDs during medial open\u2010wedge high tibial osteotomy (MOWHTO).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Patients who underwent MOWHTO with either microdrilling (group M) or no treatment (group N) for near full\u2010thickness TCDs (International Cartilage Repair Society grade IIIB or greater) from March 2010 to September 2022 were retrospectively reviewed, with a minimum 2\u2010year follow\u2010up. 1:1 Propensity score\u2212matched group N was created. Comparative analyses were conducted using PROs and minimal clinically important difference (MCID). Trochlear cartilage status was assessed visually via second\u2010look arthroscopy 1 year postoperatively and categorized as deteriorated, maintained, or improved.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Overall, 30 patients for group M and 84 patients for group N were included. The mean follow\u2010up periods of the matched groups were 32.8 and 32.0 months for groups M and N, respectively. The preoperative and postoperative radiographic parameters did not differ between the groups (Kellgren\u2010Lawrence grade, pre\u2010 and postoperative alignment, medial proximal tibia angle). Both groups achieved significant clinical improvement in patients with medial compartment osteoarthritis and combined full\u2010thickness TCD (\n                      <jats:italic>P<\/jats:italic>\n                      &lt; .001). PROs and improved PROs at final follow\u2010up were not significantly different between groups, except for the Final Kujala anterior knee pain scale (70.4; 95% confidence interval 66.0\u201074.8 vs 59.8; 95% confidence interval 53.0\u201067.6,\n                      <jats:italic>P<\/jats:italic>\n                      = .018). MCID achievement rates in pain visual analog scale (VAS), Knee injury and Osteoarthritis Outcome Scores (KOOS)\u2010pain, and KOOS\u2010activity of daily living (ADL) were significantly greater in group M compared with group N (VAS, 93.3% vs 63.3%,\n                      <jats:italic>P<\/jats:italic>\n                      = .005; KOOS\u2010pain, 96.7% vs 80.0%,\n                      <jats:italic>P<\/jats:italic>\n                      = .044; KOOS\u2010ADL, 86.7% vs 63.3%,\n                      <jats:italic>P<\/jats:italic>\n                      = .037). A significantly larger proportion of patients in group M showed improvement in their TCD status compared with those in group N (93.1% vs 44.8%,\n                      <jats:italic>P<\/jats:italic>\n                      &lt; .001).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Arthroscopic microdrilling for near full\u2010thickness TCD during MOWHTO improved trochlear cartilage status at 1 year but did not enhance final PROs at short\u2010term follow\u2010up, although it increased MCID achievement rates in some PROs (VAS, KOOS pain, KOOS ADL) compared with untreated patients.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>Level III, therapeutic retrospective cohort study.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1016\/j.arthro.2025.01.009","type":"journal-article","created":{"date-parts":[[2025,1,22]],"date-time":"2025-01-22T19:54:24Z","timestamp":1737575664000},"page":"2971-2984","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":4,"title":["Arthroscopic Microdrilling for Full\u2010Thickness Trochlear Cartilage Defects in Patients Undergoing High Tibial Osteotomy Confers Improved Cartilage Status at 1 Year and Rate of Minimal Clinically Important Difference at Short\u2010Term Follow\u2010Up"],"prefix":"10.1002","volume":"41","author":[{"given":"Se\u2010Han","family":"Jung","sequence":"first","affiliation":[{"name":"Arthroscopy and Joint Research Institute Yonsei University College of Medicine Seoul Republic of Korea"},{"name":"Department of Orthopedic Surgery Severance Hospital Yonsei University College of Medicine Seoul Republic of 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