Letters to the editor
The small patella syndrome: description of five cases from three families and examination of possible allelism with familial patella aplasia-hypoplasia and nail-patella syndrome
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EDITOR
The small patella syndrome (SPS, *MIM
14789), also known as ischiopatellar dysplasia, coxopodo patellar
syndrome, or Scott-Taor syndrome, is a rare autosomal dominant
disorder, characterised by a/hypoplasia of the patellae and various
anomalies of the pelvis and feet. This syndrome was first described by
Scott and Taor1 in 1979 in a large family with bilateral
small or absent patellae accompanied by anomalies of the pelvic girdle
and upper femora in most of the affected subjects. To our knowledge, 42 patients have been reported with this disorder,1-9
comprising 35 cases from five families and seven sporadic cases. This
bone dysplasia is characterised by patellar a/hypoplasia and pelvic
anomalies, including bilateral absent or delayed ossification of the
ischiopubic junction and infra-acetabular axe cut notches. Other major
signs are a wide gap between the first and second toes, short fourth and fifth rays of the feet, and pes planus. Various other skeletal anomalies have
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