Question: Is Congenital contractural arachnodactyly inherited ?
Answer: How is congenital contractural arachnodactyly inherited? This condition is inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In some cases, an affected person inherits the mutation from an affected parent. Other cases result from new mutations in the gene and occur in people with no history of the disorder in their family.
Source: GARD

Question: What are the treatments for Congenital contractural arachnodactyly ?
Answer: How might congenital contractural arachnodactyly be treated? Physical therapy for joint contractures helps increase joint mobility and ameliorate the effects of muscle hypoplasia (usually in the calf muscles). In severe cases, surgical release may be necessary. Since the kyphosis/scoliosis tends to be progressive, bracing and/or surgical correction is often needed. Consultation with an orthopedist is encouraged. Other symptoms, if present, should be addressed as they arise and in the standard manner. Regular physician visits should be scheduled to monitor symptom progression and development.
Source: GARD