Timing of Epiphysiodesis to Correct Leg-Length Discrepancy: A Comparison of Prediction Methods

The Journal of Bone and Joint Surgery. American Volume
Marina R MakarovJohn G Birch

Abstract

The purpose of this study was to compare the accuracy of different methods used to predict ultimate leg lengths and residual leg-length discrepancy in a group of patients treated with epiphysiodesis at our institution. Seventy-seven patients with adequate preoperative radiographs, no postoperative complications, and follow-up to skeletal maturity composed the study group. We compared the predicted lengths of both legs and residual leg-length discrepancy at maturity with actual outcomes using the White-Menelaus, Anderson-Green, Moseley, and multiplier methods. Skeletal age varied >1 year from chronological age in 61 (26%) of 231 observations, including 19 patients (25%) whose average skeletal age from 3 determinations differed by >1 year from chronological age. The prediction accuracy of each method was improved by using skeletal, rather than chronological, age. Error in prediction of the length of the short leg varied from a mean (and standard deviation) of 1.8 ± 1.2 cm for the straight-line graph to 2.5 ± 2.0 cm for the multiplier method. Prediction error for the long leg (after epiphysiodesis) varied from a mean of 1.2 ± 1.1 cm for the straight-line graph to 1.7 ± 1.5 cm for the multiplier method. Leg-length-discrepancy predi...Continue Reading

References

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Citations

Aug 23, 2019·The Journal of Bone and Joint Surgery. American Volume·Mark T DahlAaron J Huser
Apr 27, 2019·The Journal of the American Academy of Orthopaedic Surgeons·Elizabeth W HubbardChristopher A Iobst
Oct 13, 2020·Journal of Pediatric Orthopedics·Jonathan BoyleJohn G Birch
Dec 17, 2020·The Journal of Bone and Joint Surgery. American Volume·James O SandersDaniel R Cooperman
Jun 25, 2021·The Journal of Bone and Joint Surgery. American Volume·John G BirchJennifer A Rodgers
Jan 11, 2022·The Journal of Bone and Joint Surgery. American Volume·Prudence Wing Hang CheungJason Pui Yin Cheung

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