Constriction Ring Syndrome

What is constriction ring syndrome?

Constriction ring syndrome occurs when fibrous bands of the amniotic sac (the lining inside the uterus that contains a fetus) become entangled around a developing fetus. In some cases, the bands wrap around the fetus's head or umbilical cord. More commonly though, the bands wrap around a limb, fingers or toes, creating severe constrictions. It’s similar to what happens when you wrap a rubber band around your arm or leg.

Constriction ring syndrome is also known as:

  • ADAM Complex
  • amniotic band sequence 
  • amniotic band syndrome  
  • amniotic disruption complex 
  • amniochorionic mesoblastic fibrous strings
  • congenital amputation 
  • constriction band syndrome  
  • congenital constricting bands 
  • Streeter bands 
  • tissue bands

How Boston Children's cares for constriction ring syndrome

Combining training in pediatric and adolescent orthopedics, hand surgery, plastic surgery and microsurgery allows our surgeons to provide a comprehensive level of care unmatched in most other hospital settings.

Hand and Orthopedic Upper Extremity Program

The Hand and Orthopedic Upper Extremity Program provides comprehensive care involving occupational and physical therapy, splinting, casting and reconstructive surgeries for infants, children and adolescents with complex congenital, neuromuscular, sports-related oncologic and traumatic upper limb conditions.

Hand and Reconstructive Microsurgery Program

The specialists in the Hand and Reconstructive Microsurgery Program at Boston Children's are experts in the management of congenital and acquired hand deformities. We recognize the social elements involved in pediatric hand surgery, so an essential part of these operations has been making the child's hand as symmetrical as possible with the unaffected hand.