Congenital dislocation of the knee in a three-year-old-child with Larsen syndrome: Treatment with a hexapod-type external fixator

Celine Klein (1, 2) , Yassine Bulaid (3, 4) , Francois Deroussen (1, 5) , Marie-Christine Plancq (1) , Camille Printemps (6) , Richard Gouron (1, 5)

1 CHU Amiens-Picardie
2 MP3CV - Mécanismes physiopathologiques et conséquences des calcifications vasculaires - UR UPJV 7517
3 IML - Institut du Mouvement et de l’appareil Locomoteur [Hôpital Sainte-Marguerite - APHM]
4 ISM - Institut des Sciences du Mouvement Etienne Jules Marey
5 SSPC - Simplification des soins chez les patients complexes - UR UPJV 7518
6 CHU BREST Pédiatrie - CHRU de Brest - Département de Pédiatrie

Congenital knee dislocation (CDK) is a rare condition, and its treatment is subject to debate. Here, we report on a new treatment for CDK (using a hexapod-type external fixator, HEF) in a three-year-old child with Larsen syndrome and grade Ill anterior dislocations of both knees. The left knee was treated with serial splints, whereas an HEF was used to treat an irreducible dislocation of the right knee. Two HEF aluminium rings were applied surgically. The procedure involved a distraction of the knee, then tibial posterior translation, and lastly progressive flexion. The clinical and radiological outcomes were good; after four years of follow-up, the right knee had stabilized and had a range of motion of 110 degrees. We conclude that as an innovative, effective option for the management of CDK, the use of an HEF may constitute a relatively advantageous alternative to quadriceps tenotomy. (C) 2018 Elsevier B.V. All rights reserved.

Domaines: Sciences du Vivant [q-bio]

Celine Klein, Yassine Bulaid, Francois Deroussen, Marie-Christine Plancq, Camille Printemps, et al.. Congenital dislocation of the knee in a three-year-old-child with Larsen syndrome: Treatment with a hexapod-type external fixator. The Knee, 2018, 25 (5), pp.966-971. ⟨10.1016/j.knee.2018.07.006⟩. ⟨hal-03596674⟩