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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">N.N. Priorov Journal of Traumatology and Orthopedics</journal-id><journal-title-group><journal-title xml:lang="en">N.N. Priorov Journal of Traumatology and Orthopedics</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник травматологии и ортопедии им. Н.Н. Приорова</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0869-8678</issn><issn publication-format="electronic">2658-6738</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">632270</article-id><article-id pub-id-type="doi">10.17816/vto632270</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original study articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные исследования</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Leg length discrepancy in children with hip pathology. How important is it?</article-title><trans-title-group xml:lang="ru"><trans-title>Различия длины ног у детей при патологии тазобедренного сустава. Насколько это важно?</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2790-1063</contrib-id><contrib-id contrib-id-type="spin">5151-8573</contrib-id><name-alternatives><name xml:lang="en"><surname>Kuznetsov</surname><given-names>Anatoly S.</given-names></name><name xml:lang="ru"><surname>Кузнецов</surname><given-names>Анатолий Сергеевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD</p></bio><email>ortokuznetsov@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3929-6294</contrib-id><contrib-id contrib-id-type="spin">9538-4058</contrib-id><name-alternatives><name xml:lang="en"><surname>Kozhevnikov</surname><given-names>Oleg V.</given-names></name><name xml:lang="ru"><surname>Кожевников</surname><given-names>Олег Всеволодович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>д-р мед. наук</p></bio><email>kozhevnikovov@cito-priorov.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6956-6801</contrib-id><contrib-id contrib-id-type="spin">9178-0184</contrib-id><name-alternatives><name xml:lang="en"><surname>Kralina</surname><given-names>Svetlana E.</given-names></name><name xml:lang="ru"><surname>Кралина</surname><given-names>Светлана Эдуардовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>Kralina_s@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7323-0681</contrib-id><contrib-id contrib-id-type="spin">5618-4231</contrib-id><name-alternatives><name xml:lang="en"><surname>Gribova</surname><given-names>Inna V.</given-names></name><name xml:lang="ru"><surname>Грибова</surname><given-names>Инна Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>grinna@bk.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Priorov National Medical Research Center for Traumatology and Orthopedics</institution></aff><aff><institution xml:lang="ru">Национальный медицинский исследовательский центр травматологии и ортопедии им. Н.Н. Приорова</institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Priorov National Medical Research Center for Traumatology and Orthopedics</institution></aff><aff><institution xml:lang="ru">Национальный медицинский исследовательский центр травматологии и ортопедии им. Н.Н. Приорова</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-02-17" publication-format="electronic"><day>17</day><month>02</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-02-15" publication-format="electronic"><day>15</day><month>02</month><year>2025</year></pub-date><volume>32</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>27</fpage><lpage>34</lpage><history><date date-type="received" iso-8601-date="2024-05-20"><day>20</day><month>05</month><year>2024</year></date><date date-type="accepted" iso-8601-date="2024-06-21"><day>21</day><month>06</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Эко-Вектор</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2026-04-08"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0/</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.eco-vector.com/0869-8678/article/view/632270">https://journals.eco-vector.com/0869-8678/article/view/632270</self-uri><abstract xml:lang="en"><p><bold>BACKGROUND:</bold> Length inequality of the lower limbs is a common secondary deformity in pathologies such as congenital hip dislocation and Perthes' disease. Treatment can shorten or lengthen the affected limb, but no clear patterns have been identified. The different authors' opinions on the impact of leg variance in patients with hip joint pathology and the need to correct this inequality prompted us to analyse and conduct a study on this issue.</p> <p><bold>AIM:</bold><italic> </italic>To evaluate the inequalities of lower limb length in patients with unilateral congenital hip dislocation and Perthes' disease after surgical intervention.</p> <p><bold>MATERIALS AND METHODS:</bold><italic> </italic>The study included 38 patients with unilateral pathology of the hip joint: 27 girls, 11 boys; 26 patients with congenital hip dislocation, 12 with Perthes disease. 12 patients (32%) underwent surgical treatment on the left hip, and 26 patients on the right (68%). The average age was 9 years (±2.24). Duration of observation up to 7 years (average 28 months ± 21). The minimum follow-up period was 6 months, the maximum was 84 months.</p> <p><bold>RESULTS:</bold><italic> </italic>A positive Trendelenburg test was noted in 21 patients (10 with Perthes disease and 11 with hip dislocation). In patients with congenital hip dislocation, the affected limb was shortened by 2.3 cm (1.7–2.9) in 16 patients, lengthened by 1.6 cm (1.3–1.9) in 10 patients. In patients with Perthes disease, shortening of the affected limb occurred in 9 patients by an average of 1.9 cm (1.2–2.6), and in 3 patients there was a lengthening of the limb by an average of 1.5 cm (0.7–2.0). The formation of positional hip subluxation was revealed in 8 patients with limb lengthening on the affected side. After statistical analysis, it was revealed that acquired shortening of the operated limb occurs more often (ratio 25 to 13, <italic>p</italic>=0.019). The dependence of the change in length on pathology was noted as statistically insignificant (<italic>p</italic>=0.525). There was no dependence of changes in the length of the lower limb on the patient’s gender (<italic>p</italic>=0.657), however, a statistical dependence on age was revealed (<italic>p</italic>=0.049).</p> <p><bold>CONCLUSION:</bold><bold> </bold>From our point of view, correction of residual length inequality is reasonable, as it allows correcting the development of secondary complications, reducing the degree of positional subluxation of the femoral head, improving the balance of the gluteal muscles, and reducing the severity of gait disorders, which for many patients is even more important than joint stability.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование.</bold><bold> </bold>Неравенство длины нижних конечностей является частой вторичной деформацией при таких патологиях, как врождённый вывих бедра и болезнь Пертеса. В ходе лечения может произойти укорочение или удлинение поражённой конечности, однако чётких закономерностей до сих пор не выявлено. Разные мнения авторов об оценке влияния разновеликости ног у пациентов с патологией тазобедренного сустава, вопросы необходимости коррекции этого неравенства побудили нас провести анализ и исследование по этому вопросу.</p> <p><bold>Цель.</bold><bold> </bold>Оценка неравенства длины нижних конечностей у пациентов с односторонним врождённым вывихом бедра и болезнью Пертеса после проведённого оперативного вмешательства.</p> <p><bold>Материалы</bold><bold> </bold><bold>и</bold><bold> </bold><bold>методы.</bold> В исследование вошли 38 пациентов с односторонним поражением тазобедренного сустава: 27 девочек, 11 мальчиков; 26 пациентов — с врождённым вывихом бедра, 12 — с болезнью Пертеса. У 12 пациентов (32%) проведено оперативное лечение на левом бедре, у 26 — на правом (68%). Средний возраст составил 9 лет (±2,24). Длительность наблюдения — до 7 лет (в среднем 28 месяцев ±21). Минимальный срок наблюдения составил 6 месяцев, максимальный — 84 месяца.</p> <p><bold>Результаты.</bold> Положительный тест Тренделенбурга отмечен у 21 пациента (10 — с болезнью Пертеса и 11 — с вывихом бедра). У 16 пациентов с врождённым вывихом бедра — укорочение поражённой конечности на 2,3 см (1,7–2,9), у 10 — удлинение на 1,6 см (1,3–1,9). У 9 пациентов с болезнью Пертеса произошло укорочение поражённой конечности в среднем на 1,9 см (1,2–2,6), а у 3 пациентов отмечено удлинение конечности в среднем на 1,5 см (0,7–2,0). У 8 пациентов выявлено формирование позиционного подвывиха с удлинением конечности на стороне поражения. В результате статистического анализа выявлено, что приобретённое укорочение оперированной конечности происходит чаще (соотношение 25 к 13, <italic>p</italic>=0,019). Зависимость изменения длины от патологии отмечена как статистически незначимая (<italic>p</italic>=0,525). Зависимости изменения длины нижней конечности от пола пациента не отмечено (<italic>p</italic>=0,657), однако выявлена статистическая зависимость от возраста (<italic>p</italic>=0,049).</p> <p><bold>Заключение.</bold><bold> </bold>С нашей точки зрения, коррекция остаточного неравенства длины является целесообразной, так как позволяет скорректировать развитие вторичных осложнений, уменьшить степень позиционного подвывиха головки бедра, улучшить баланс ягодичных мышц, снизить выраженность нарушений походки, что для многих пациентов является даже более важным, нежели стабильность сустава.</p></trans-abstract><kwd-group xml:lang="en"><kwd>leg length discrepancy</kwd><kwd>congenital hip dislocation</kwd><kwd>Perthes disease</kwd><kwd>hip subluxation</kwd><kwd>temporary epiphysiodesis</kwd><kwd>growth plates</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>неравенство длины нижних конечностей</kwd><kwd>врождённый вывих бедра</kwd><kwd>болезнь Пертеса</kwd><kwd>подвывих бедра</kwd><kwd>временный эпифизиодез</kwd><kwd>зоны роста</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Merchant RM, Tolk JJ, Ayub AA, Eastwood DM, Hashemi-Nejad A. The Importance of Monitoring and Factors That May Influence Leg Length Difference in Developmental Dysplasia of the Hip. Children (Basel). 2022;9(12):1945. doi: 10.3390/children9121945</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Kalamchi A, MacEwen GD. Avascular necrosis following treatment of congenital dislocation of the hip. J Bone Joint Surg Am. 1980;62(6):876–88.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Porat S, Robin GC, Howard CB. Cure of the limp in children with congenital dislocation of the hip and ischaemic necrosis. Fifteen cases treated by trochanteric transfer and contralateral epiphysiodesis. J Bone Joint Surg Br. 1994;76(3):463–7.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Inan M, Chan G, Bowen JR. The correction of leg-length discrepancy after treatment in developmental dysplasia of the hip by using a percutaneous epiphysiodesis. J Pediatr Orthop B. 2008;17(1):43–6. doi: 10.1097/BPB.0b013e3282e61af7</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Zadeh HG, Catterall A, Hashemi-Nejad A, Perry RE. Test of stability as an aid to decide the need for osteotomy in association with open reduction in developmental dysplasia of the hip. J Bone Joint Surg Br. 2000;82(1):17–27. doi: 10.1302/0301-620x.82b1.9618</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Yoon C, Shin CH, Kim DO, et al. Overgrowth of the lower limb after treatment of developmental dysplasia of the hip: incidence and risk factors in 101 children with a mean follow-up of 15 years. Acta Orthop. 2020;91(2):197–202. doi: 10.1080/17453674.2019.1688485</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Kozhevnikov OV, Lysikov VA, Ivanov AV. Legg-Calve-Perthes Disease: Etiology, Pathogenesis Diagnosis and Treatment. N.N. Priorov Journal of Traumatology and Orthopedics. 2017;24(1):77–87. (In Russ.). doi: 10.17816/vto201724177-87</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>Tolk JJ, Eastwood DM, Hashemi-Nejad A. Leg length discrepancy in patients with Perthes’ disease. Bone Joint J. 2021;103-B(11):1736–1741. doi: 10.1302/0301-620X.103B11.BJJ-2020-2583.R2</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Park KW, Jang KS, Song HR. Can residual leg shortening be predicted in patients with Legg-Calvé-Perthes’ disease? Clin Orthop Relat Res. 2013;471(8):2570–7. doi: 10.1007/s11999-013-3009-4</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Grzegorzewski A, Synder M, Kozłowski P, Szymczak W, Bowen RJ. Leg length discrepancy in Legg-Calve-Perthes disease. J Pediatr Orthop. 2005;25(2):206–9. doi: 10.1097/01.bpo.0000148497.05181.51</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>Mirovsky Y, Axer A, Hendel D. Residual shortening after osteotomy for Perthes’ disease. A comparative study. J Bone Joint Surg Br. 1984;66(2):184–8. doi: 10.1302/0301-620X.66B2.6707053</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>Stokes IA. Mechanical effects on skeletal growth. J Musculoskelet Neuronal Interact. 2002;2(3):277–80.</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>Halanski MA, Yildirim T, Chaudhary R, Chin MS, Leiferman E. Periosteal Fiber Transection During Periosteal Procedures Is Crucial to Accelerate Growth in the Rabbit Model. Clin Orthop Relat Res. 2016;474(4):1028–37. doi: 10.1007/s11999-015-4646-6</mixed-citation></ref><ref id="B14"><label>14.</label><mixed-citation>Bertram JE, Polevoy Y, Cullinane DM. Mechanics of avian fibrous periosteum: tensile and adhesion properties during growth. Bone. 1998;22(6):669–75. doi: 10.1016/s8756-3282(98)00035-0</mixed-citation></ref><ref id="B15"><label>15.</label><mixed-citation>Pang H, Guo R, Zhuang H, Ben Y, Lou Y, Zheng P. Risk factors for femoral overgrowth after femoral shortening osteotomy in children with developmental dysplasia of the hip. Front Pediatr. 2023;11:1104014. doi: 10.3389/fped.2023.1104014</mixed-citation></ref><ref id="B16"><label>16.</label><mixed-citation>Clement DA, Colton CL. Overgrowth of the femur after fracture in childhood. An increased effect in boys. J Bone Joint Surg Br. 1986;68(4):534–6. doi: 10.1302/0301-620X.68B4.3733825</mixed-citation></ref><ref id="B17"><label>17.</label><mixed-citation>Choi WY, Park MS, Lee KM, et al. Leg length discrepancy, overgrowth, and associated risk factors after a pediatric tibial shaft fracture. J Orthop Traumatol. 2021;22(1):12. doi: 10.1186/s10195-021-00575-x</mixed-citation></ref><ref id="B18"><label>18.</label><mixed-citation>Yoon C, Shin CH, Kim DO, et al. Overgrowth of the lower limb after treatment of developmental dysplasia of the hip: incidence and risk factors in 101 children with a mean follow-up of 15 years. Acta Orthop. 2020;91(2):197–202. doi: 10.1080/17453674.2019.1688485</mixed-citation></ref><ref id="B19"><label>19.</label><mixed-citation>Gordon JE, Davis LE. Leg Length Discrepancy: The Natural History (And What Do We Really Know). J Pediatr Orthop. 2019;39(Issue 6, Suppl 1):S10–S13. doi: 10.1097/BPO.0000000000001396</mixed-citation></ref><ref id="B20"><label>20.</label><mixed-citation>Marks VO. Ortopedicheskaja diagnostika: rukovodstvo dlja vrachej. Minsk: Nauka i tehnika; 1978. 512 s. (In Russ.)</mixed-citation></ref><ref id="B21"><label>21.</label><mixed-citation>Kaufman KR, Miller LS, Sutherland DH. Gait asymmetry in patients with limb-length inequality. J Pediatr Orthop. 1996;16(2):144–150. doi: 10.1097/00004694-199603000-00002</mixed-citation></ref><ref id="B22"><label>22.</label><mixed-citation>Liu XC, Fabry G, Molenaers G, et al. Kinematic and kinetic asymmetry in patients with leg-length discrepancy. J Pediatr Orthop. 1998;18(2):187–189.</mixed-citation></ref><ref id="B23"><label>23.</label><mixed-citation>Tallroth K, Ylikoski M, Lamminen H, Ruohonen K. Preoperative leg-length inequality and hip osteoarthrosis: a radiographic study of 100 consecutive arthroplasty patients. Skeletal Radiol. 2005;34(3):136–9. doi: 10.1007/s00256-004-0831-5</mixed-citation></ref><ref id="B24"><label>24.</label><mixed-citation>Harvey WF, Yang M, Cooke TD, et al. Association of leg-length inequality with knee osteoarthritis: a cohort study. Ann Intern Med. 2010;152(5):287–95. doi: 10.7326/0003-4819-152-5-201003020-00006</mixed-citation></ref><ref id="B25"><label>25.</label><mixed-citation>Murray KJ, Azari MF. Leg length discrepancy and osteoarthritis in the knee, hip and lumbar spine. J Can Chiropr Assoc. 2015;59(3):226–37.</mixed-citation></ref><ref id="B26"><label>26.</label><mixed-citation>Ershov JeV. Diagnostika i korrekcija deformacij pozvonochnogo stolba bol’nyh s odnostoronnim ukorocheniem nizhnej konechnosti: avtoref. dis. … kand. med. nauk. Kurgan; 2007. 30 p. (In Russ.). EDN: NJBPEH</mixed-citation></ref><ref id="B27"><label>27.</label><mixed-citation>Malahov OA, Cykunov MB, Sharpar’ VD. Narushenija razvitija tazobedrennogo sustava: (klinika, diagnostika, lechenie). Izhevsk : Udmurtskij gosudarstvennyj universitet; 2005. 308 p. (In Russ.). EDN: CICYGK</mixed-citation></ref><ref id="B28"><label>28.</label><mixed-citation>Schneidmueller D, Carstens C, Thomsen M. Surgical treatment of overgrowth of the greater trochanter in children and adolescents. J Pediatr Orthop. 2006;26(4):486–90. doi: 10.1097/01.bpo.0000226281.01202.94</mixed-citation></ref><ref id="B29"><label>29.</label><mixed-citation>Zhang Z, Luo D, Cheng H, Xiao K, Zhang H. Unexpected Long Lower Limb in Patients with Unilateral Hip Dislocation. J Bone Joint Surg Am. 2018;100(5):388–395. doi: 10.2106/JBJS.17.00187</mixed-citation></ref><ref id="B30"><label>30.</label><mixed-citation>Brunet ME, Cook SD, Brinker MR, Dickinson JA. A survey of running injuries in 1505 competitive and recreational runners. J Sports Med Phys Fitness. 1990;30(3):307–15.</mixed-citation></ref><ref id="B31"><label>31.</label><mixed-citation>Stevens P. Guided growth: 1933 to the present. Strat Traum Limb Recon. 2006;1:29–35. doi: 10.1007/s11751-006-0003-3</mixed-citation></ref><ref id="B32"><label>32.</label><mixed-citation>Borbas P, Agten CA, Rosskopf AB, et al. Guided growth with tension band plate or definitive epiphysiodesis for treatment of limb length discrepancy? J Orthop Surg Res. 2019;14(1):99. doi: 10.1186/s13018-019-1139-4</mixed-citation></ref><ref id="B33"><label>33.</label><mixed-citation>Vogt B, Gosheger G, Wirth T, Horn J, Rödl R. Leg Length Discrepancy — Treatment Indications and Strategies. Dtsch Arztebl Int. 2020;117(24):405–411. doi: 10.3238/arztebl.2020.0405</mixed-citation></ref><ref id="B34"><label>34.</label><mixed-citation>Sokolovskij OA, Serdjuchenko SN, Brodko GA, Ur’ev GA. Uravnivanie dliny nizhnih konechnostej-istori cheskie rakursy i sovremennye tendencii. Medicinskie novosti. 2011;(7):11–19. (In Russ.). EDN: OHRWAJ</mixed-citation></ref><ref id="B35"><label>35.</label><mixed-citation>Kelly P, Diméglio A. Lower-limb growth: How predictable are predictions? Journal of children’s orthopaedics. 2009;(2):407–15. doi: 10.1007/s11832-008-0119-8.</mixed-citation></ref><ref id="B36"><label>36.</label><mixed-citation>Dewaele J, Fabry G. The timing of epiphysiodesis. A comparative study between the use of the method of Anderson and Green and the Moseley chart. Acta Orthop Belg. 1992;58(1):43–7.</mixed-citation></ref></ref-list></back></article>
