Acta Scientific Orthopaedics (ISSN: 2581-8635)

Case Report Volume 6 Issue 6

Congenital Dislocation of the Patella-A Case Report and Literature Review

Pedro Pinho1*, Ricardo Maia1, Guilherme Correia1, André Moreira1, Guilherme França1, Pedro Varanda1,2 and Cecília Barros1

1Department of Orthopedic Surgery, Hospital de Braga, Braga, Portugal
2Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal

*Corresponding Author: Pedro Pinho, Hospital de Braga, Braga, Portugal.

Received: April 19, 2023; Published: May 14, 2023


Congenital Dislocation of the Patella (CDP) is an extremely rare condition characterized by a permanent, irreducible patella dislocation associated with a fixed flexion contracture of the knee. It should always be differentiated from other more frequent conditions. Several techniques have been described for the surgical treatment, which is mandatory to achieve patella reduction and a normal knee function. We report the case of a one-year-old girl who was diagnosed at birth by magnetic resonance imaging after a suspicious physical examination. No other medical conditions were identified. She underwent surgical treatment with a modified Langenskiöld technique, aiming for a less invasive approach with no peri or post-operative complications. Six months after surgery she was able to stand and walk properly for her age with knee full extension achieved.

Keywords: Congenital Dislocation; Patella; modified Langenskiöld Technique


  1. Ghanem I., et al. “Congenital Dislocation of the Patella. Part I: Pathologic Anatomy”. Journal of Pediatric Orthopedics6 (2000): 812-816.
  2. Gao GX., et al. “Surgical Management of Congenital and Habitual Dislocation of the Patella”. Journal of Pediatric Orthopedics2 (1990): 255-260.
  3. Stanisavljevic S., et al. “Congenital, Irreducible, Permanent Lateral Dislocation of the Patella”. Clinical Orthopaedics and Related Research 116 (1976): 190-199.
  4. Langenskiöld A and V Ritsilä. “Congenital Dislocation of the Patella and Its Operative Treatment”. Journal of Pediatric Orthopedics3 (1992): 315-323.
  5. Wada Akifusa., et al. “Congenital Dislocation of the Patella”. Journal of Children’s Orthopaedics2 (2008): 119-123.
  6. Paley Dror and Shawn C Standard. “Treatment of Congenital Femoral Deficiency”. Operative Techniques in Orthopaedic Pediatric Surgery (2012): 177-198.
  7. Mo Yueqiang., et al. “Modified Langenskiöld Procedure for Congenital Patella Dislocations in Pediatric Patients”. BMC Musculoskeletal Disorders1 (2022): 241.
  8. Ramos Omar., et al. “Modified Langenskiöld Procedure for Chronic, Recurrent, and Congenital Patellar Dislocation”. Journal of Children’s Orthopaedics4 (2020): 318-329.
  9. Bensahel H., et al. “The Unstable Patella in Children”. Journal of Pediatric Orthopedics. Part B4 (2000): 265-270.
  10. Walker J., et al. “Ultrasonography of the Unossified Patella in Young Children”. Journal of Pediatric Orthopedics1 (1991): 100-102.
  11. Calisir Cuneyt., et al. “Magnetic Resonance Imaging of Bilateral Lateral Congenital Dislocations of Unossified Patellae”. Skeletal Radiology6 (2006): 406-409.
  12. Eilert RE. “c”. Clinical Orthopaedics and Related Research 389 (2001): 22-29.
  13. Koplewitz Benjamin Z., et al. “Congenital Dislocation of the Patella”. American Journal of Roentgenology 184.5 (2005): 1640-1646.
  14. Ghanem I., et al. “Congenital Dislocation of the Patella. Part II: Orthopaedic Management”. Journal of Pediatric Orthopedics6 (2000): 817-822.
  15. Sever Ronen., et al. “Surgical Treatment of Congenital and Obligatory Dislocation of the Patella in Children”. Journal of Pediatric Orthopedics8 (2019): 436-440.
  16. , Carlo, et al. “Poor Outcome at 7.5 Years after Stanisavljevic Quadriceps Transposition for Patello-Femoral Instability”. Archives of Orthopaedic and Trauma Surgery 134.4 (2014): 473-478.


Citation: Pedro Pinho., et al. “Congenital Dislocation of the Patella-A Case Report and Literature Review”.Acta Scientific Orthopaedics 6.6 (2023): 40-43.


Copyright: © 2023 Pedro Pinho., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


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