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The Archives of Bone and Joint Surgery، جلد ۱۱، شماره ۱۲، صفحات ۷۶۵-۷۶۹
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عنوان انگلیسی A Method of Time Prediction in Epiphysiodesis for Limb Length Discrepancy Based On Multiplier
چکیده انگلیسی مقاله Objectives: The most critical step in the calculation of final limb length discrepancy (LLD) is estimatingthe length of the short limb after skeletal maturity(Sm). Paley's multiplier method is a fast, convenientmethod for calculating Sm and LLD after skeletal maturity; nonetheless, the calculation of the processof Sm and LLD in acquired type cases is complex in contrast to congenital type in this method.Notwithstanding. The multiplier method uses a variable called "growth inhibition" for the calculationprocess in acquired type LLD; however, its mathematical proof has not been published yet. The presentstudy aims to find out whether there is an alternative way to estimate the length of Sm and LLD inskeletal maturity without using growth inhibition (GI) and its com plex calculation process in acquiredtype LLD.Methods: We used trigonometric equations to prove the GI concept and conducted proportionality analysis tocalculate the length of short limbs and LLD in skeletal maturity without using GI.Results: Based on the results, the following proportionality can estimate the length of the short limb in skeletalmaturity. (ΔLm/ΔL = ΔSm/ΔS)Conclusion: The GI concept can be proved trigonometrically; nonetheless, its numerical value is not necessary forestimating the length of the short limb in skeletal maturity. Instead, a simple proportionality analysis serves thepurpose of calculation. Level of evidence: II
کلیدواژه‌های انگلیسی مقاله Limb length discrepancy, Method skeletal maturity, Paley&apos,s multiplier
نویسندگان مقاله | Reza Abdi
Orthopedic Research Center, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran


| Omid Shahpari
Orthopedic Research Center, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran


| Farshid Bagheri
Orthopedic Research Center, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran


| Ramin Zargarbashi
Orthopedic Research Center, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran
نشانی اینترنتی https://abjs.mums.ac.ir/article_23421.html
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده RESEARCH PAPER
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