[A familial form of bilateral recurrent dislocation of the patella with major trochlea dysplasia].
OBJECTIVE
We report four cases of bilateral recurrent dislocation of the patella with major trochlear dysplasia, in the same family.


METHODS
Details of clinical examination of all members of this family and measurements on knee radiographs are reported.


RESULTS
In all cases a severe proximal dysplasia of the trochlea was described on lateral views. The patella and the trochlea had a normal shape on the axial view.


CONCLUSIONS
In some recurrent dislocation, with no associated disease, possibility of a genetic transmission have been suggested in some publications. Cases involving the same family have never been reported to confirm a genetic transmission of a bilateral and major trochlear dysplasia.


CONCLUSIONS
This report points out a genetic origin of severe trochlear dysplasia. To know more about transmission and chromosomic localisation, careful investigations on others families of bilateral dislocations with trochlear dysplasia must be done.
Service de Chirurgie Orthopédique et Traumatologique, CHU La Meynard, Martinique.
J L
JL
Rouvillain
N
N
Piquion
A
A
Lepage-Lezin
A M
AM
Garsaud
P
P
Couette
O
O
Delattre
Y
Y
Catonne
D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D005269:Femur / Q000002:abnormalities*; D006801:Humans; D004204:Joint Dislocations / Q000000981:diagnostic imaging / Q000235:genetics*; D007593:Joint Instability / Q000235:genetics; D007719:Knee Joint; D008297:Male; D010329:Patella / Q000000981:diagnostic imaging / Q000293:injuries*; D010375:Pedigree; D011859:Radiography; D012008:Recurrence
Une forme familiale de luxation récidivante bilatérale de la rotule avec dysplasie trochléenne majeure.