A material of 89 cases of upper extremity deformities, among the 3225 cleft 
patients born during the period 1950-75, and treated in the Finnish Red Cross 
Cleft Centre is presented. About two-thirds of the patients had an isolated 
cleft palate--half of the male and nearly all of the female patients. The 
percentage of upper extremity deformities appearing with the different types of 
the orofacial clefts was, for clefts of the primary palate 2.0: specifically for 
cleft lip 0.8, cleft lip--palate 2.6, and cleft lip and palate 3.6; and for 
clefts of the secondary palate 3.5: specifically for cleft palate 3.7, submucous 
cleft palate 1.6; and for the branchial arch syndrome (lateral cleft) 5.2; the 
total average being 2.8 percent. About one-third of the patients were dwarfs, 
most of them diastrophic dwarfs. Syndactyly was somewhat more common among cleft 
patients, 0.3%, than in the average population. Polydactyly, 0.1% was about as 
common as the average. Ectrodactyly was more common among cleft patients, 0.4%, 
than either syndactyly or polydactyly that are considered the most common hand 
deformities among the general population. The syndactyly cases were more 
complicated than the average, among them 4 cases of Apert syndrome were noted. 
About three-fourths of the 89 patients had multiple deformities.