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The healing condition of the repaired meniscus was evaluated based on (1) morphologic continuity between the bone bed and meniscus (intact vs non\u2010intact) and (2) meniscal laxity at the bony attachment by probing (lax vs non\u2010lax). Healing conditions were categorized as follows: intact and non\u2010lax tissue (group 1), intact and lax tissue (group 2), and healing failure (group 3). Clinical scores (Lysholm score, Western Ontario McMaster Osteoarthritis Index [WOMAC] score, and Knee Injury and Osteoarthritis Outcome Score [KOOS]) and radiologic outcomes (Kellgren\u2010Lawrence grade and medial joint space width) were evaluated preoperatively and at the final follow\u2010up.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>In total, 34 patients (mean age, 58.2 \u00b1 6.1 years) were enrolled. In terms of healing conditions, intact root tissue and healing failure were observed in 33 patients (97%) and 1 patient (3%), respectively. Among those with intact root tissue, 19 patients (56%) and 14 patients (41%) showed non\u2010lax tissue (group 1) and lax tissue (group 2), respectively. A significant improvement in clinical scores after surgery was noted in groups 1 and 2 but not in group 3. Regarding postoperative clinical scores, the mean values in group 1 were as follows: Lysholm score, 86.1 \u00b1 8.2 (minimal clinically important difference [MCID], 5.35); WOMAC score, 12.8 \u00b1 6.6 (MCID, 4.55); and KOOS, 22.4 \u00b1 6.8 (MCID, 4.5). The group 1 outcomes were substantially better than those in group 2; the group 2 scores were as follows: Lysholm score, 76.8 \u00b1 7.0 (MCID, 2.85); WOMAC score, 21.0 \u00b1 8.3 (MCID, 4.75); and KOOS, 32.8 \u00b1 10.0 (MCID, 6.5). Radiographically, group 1 exhibited significantly less Kellgren\u2010Lawrence grade progression and less medial joint space narrowing than group 2.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Pullout repair using modified Mason\u2010Allen stitches showed promising healing outcomes with a 97% rate of intact root healing on second\u2010look arthroscopy. However, repairs that showed laxity were associated with significantly worse patient\u2010reported outcome measures and higher rates of progression of osteoarthritis. Considering that 23% of the total patients refused second\u2010look arthroscopy, the possibility of transfer bias should be considered.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Level of Evidence<\/jats:title>\n                    <jats:p>Level IV, retrospective case series.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1016\/j.arthro.2025.02.033","type":"journal-article","created":{"date-parts":[[2025,3,6]],"date-time":"2025-03-06T11:45:04Z","timestamp":1741261504000},"page":"4026-4039","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":17,"title":["Medial Meniscal Posterior Root Repairs Performed With Modified Mason\u2010Allen Locking Stitches Are Associated With Intact but Lax Repairs in a High Proportion of Second\u2010Look Arthroscopy Cases"],"prefix":"10.1002","volume":"41","author":[{"given":"Kyu 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