{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,10]],"date-time":"2026-04-10T10:01:29Z","timestamp":1775815289229,"version":"3.50.1"},"reference-count":26,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2024,3,14]],"date-time":"2024-03-14T00:00:00Z","timestamp":1710374400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JCM"],"abstract":"<jats:p>(1) Background: The purpose of this study was to assess the effects of sex and age on the outcomes of hemiepiphysiodesis performed for genu valgum and varum deformity correction. (2) Methods: We analyzed patients who had undergone O-Plate hemiepiphysiodesis due to genu valgum or varum in the period of 2020\u20132023. The study group comprised 22 females and 20 males aged between 3 and 14 years at the time of surgery. Age-stratification yielded a subgroup of 3\u201310-year-olds (16 patients, 20 treated limbs) and a subgroup of 11\u201314-year-olds (26 patients, 28 treated limbs). We assessed the following parameters: hospital stay duration, deformity correction time, MAD correction, amount of angular correction, correction velocity, correction rate, complete deformity correction, deformity recurrence, surgery duration, and complications. (3) Results: The mean follow-up was 19 months. The mean surgery time in the subgroup of 3\u201310-year-olds (25.62 min) was significantly longer than that in the subgroup of 11\u201314-year-olds (22.81 min, p = 0.018). The mean deformity correction time in the male subgroup (11.33 months) was significantly shorter than that in the female subgroup (15.87 months, p = 0.013). A comparison of the subgroups stratified by age yielded a mean amount of angular correction of 10.5\u00b0 in the younger children, which was significantly higher than that of 7.2\u00b0 achieved in the older children; p = 0.027. The difference in mean correction velocity between 3\u201310-year-old children (4.03 mm\/month) and that in 11\u201314-year-old children (1.39 mm\/month) was statistically significant; p = 0.031. The mean rate of correction was 0.49\u00b0\/month in females and 0.89\u00b0\/month in males, with the latter rate significantly greater; p = 0.023. The difference in the mean rate of correction between the younger (1.08\u00b0\/month) and the older subgroup (0.59\u00b0\/month) was also significant; p = 0.018. A significant difference in terms of deformity recurrence rates was observed between the younger subgroup (66.67%) and older subgroup (only 10.53%); p = 0.005. (4) Conclusions: Patient sex had no significant effect on hemiepiphysiodesis outcomes; patient age has a considerable effect on hemiepiphysiodesis outcomes.<\/jats:p>","DOI":"10.3390\/jcm13061654","type":"journal-article","created":{"date-parts":[[2024,3,14]],"date-time":"2024-03-14T05:43:08Z","timestamp":1710394988000},"page":"1654","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Do Patient Sex and Age Affect Hemiepiphysiodesis Outcomes?"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7587-666X","authenticated-orcid":false,"given":"Piotr","family":"Morasiewicz","sequence":"first","affiliation":[{"name":"Department of Orthopaedic and Trauma Surgery, Institute of Medical Sciences, University of Opole, Witosa 26, 45-401 Opole, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pawe\u0142","family":"Leyko","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic and Trauma Surgery, Institute of Medical Sciences, University of Opole, Witosa 26, 45-401 Opole, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4644-0111","authenticated-orcid":false,"given":"\u0141ukasz","family":"Tomczyk","sequence":"additional","affiliation":[{"name":"Department of Food Safety and Quality Management, Poznan University of Life Sciences, Wojska Polskiego 28, 60-637 Poznan, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Krystian","family":"Kazubski","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic and Trauma Surgery, Institute of Medical Sciences, University of Opole, Witosa 26, 45-401 Opole, Poland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,3,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Trisolino, G., Boarini, M., Mordenti, M., Evangelista, A., Gallone, G., Stallone, S., Zarantonello, P., Antonioli, D., Di Gennaro, G.L., and Stilli, S. 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