Tratamiento quirúrgico de la luxación recidivante de rótula en el niño asociada a displasia patello-femoral./ Surgical treatment of recurrent patellar dislocation in children associated with patello-femoral dysplasia

Surgical treatment of recurrent patellar dislocation in children associated with patello-femoral dysplasia

los pacientes con síndromes que se acompañan de hiperlaxitud como el S. de Down.

Objective: The aim of this paper is to show the results in a small series of patients withpatellofemoral instability or recurrent patellar dislocation in children operated with theproximal realignment technique. Materials and methods: It is a series of 10 knees in7 children, with proximal patela realignment patela using the Insall technique. The mostimportant role of the patela is to increase the quadriceps efficiency. The patelo -femoralinstability is defined as a condition in which there is insufficient coupling of the patelawith the femoral trochlea during the knee range of motion. In children this instabilitymay be due to various anatomical factors leading to recurrent dislocation of the patela.There are surgeries proximal o distal to the patela level. Results: Good results wereobtained on 8 knees, without pain, neither dislocation nor residual instability and havinggood stability and safety during the gait. One patient showed redislocation and anotherpatient with Down syndrome had a subluxation. Conclusions: proximal realignment inthis series shows good results in patients who had little trochlear dysplasia with mildalteration of the Q angle. It is a technique not widely used but has indicated in selectedcases. Today, the patelo - femoral medial ligament reconstruction, can be used incombination with proximal realignment techniques. Patients with collagen problemslike Marfan and Down syndrome usually have redislocation and require some otherprocedures for patelar stabilization.