Response to Letter: Correlation between acetabular index at 3 and 12 months of age: a longitudinal radiographic study of 228 neonates treated for 6 or 12 weeks with the von Rosen splint for developmental dysplasia of the hip

Kocak S. Letter to the Editor: Correlation between acetabular index at 3 and 12 months of age: a longitudinal radiographic study of 228 neonates treated for 6 or 12 weeks with the von Rosen splint for developmental dysplasia of the hip. Acta Orthop 2026; 97: 243-4. doi: 10.2340/17453674.2026.45783

Sand A, Wenger D, Düppe H, Tiderius C J. Correlation between acetabular index at 3 and 12 months of age: a longitudinal radiographic study of 228 neonates treated for 6 or 12 weeks with the von Rosen splint for developmental dysplasia of the hip. Acta Orthop 2026; 97: 9-13. doi: 10.2340/17453674.2025.45043. DOI: https://doi.org/10.2340/17453674.2025.45043

Graf R. Classification of hip joint dysplasia by means of sonography. Arch Orthop Trauma Surg (1978) 1984; 102(4): 248-55. doi: 10.1007/BF00436138. DOI: https://doi.org/10.1007/BF00436138

Leide R, Bohman A, Wenger D, Overgaard S, Tiderius C J, Rogmark C. Hip dysplasia is not uncommon but frequently overlooked: a cross-sectional study based on radiographic examination of 1,870 adults. Acta Orthop 2021; 92(5): 575-80. doi: 10.1080/17453674.2021.1936918. DOI: https://doi.org/10.1080/17453674.2021.1936918

Dahlström H, Oberg L, Friberg S. Sonography in congenital dislocation of the hip. Acta Orthop Scand 1986; 57(5): 402-6. doi: 10.3109/17453678609014757. DOI: https://doi.org/10.3109/17453678609014757

Hailer Y D, Askenberger M, Björck S, Düppe H, Fridh E, Herngren B, et al. Svenskt Pediatriskt Ortopediskt Kvalitetsregister – Årsrapport 2024 [in Swedish]. Available from: https://registercentrum.blob.core.windows.net/spoq/r/SPOQ-2024_250829-we99cGOYK.pdf

Thallinger C, Pospischill R, Ganger R, Radler C, Krall C, Grill F. Long-term results of a nationwide general ultrasound screening system for developmental disorders of the hip: the Austrian hip screening program. J Child Orthop 2014; 8(1): 3-10. doi: 10.1007/s11832-014-0555-6. DOI: https://doi.org/10.1007/s11832-014-0555-6

Wenger D, Düppe H, Nilsson J A, Tiderius C J. Incidence of late-diagnosed hip dislocation after universal clinical screening in Sweden. JAMA Netw Open 2019; 2(11): e1914779. doi: 10.1001/jamanetworkopen.2019.14779. DOI: https://doi.org/10.1001/jamanetworkopen.2019.14779

Düppe H, Danielsson L G. Screening of neonatal instability and of developmental dislocation of the hip: a survey of 132,601 living newborn infants between 1956 and 1999. J Bone Joint Surg Br 2002; 84(6): 878-85. doi: 10.1302/0301-620x.84b6.12326. DOI: https://doi.org/10.1302/0301-620X.84B6.0840878