Abstract
1. Six cases of quadriceps contracture in children are described. All were either premature or suffered severe illnesses soon after birth.
2. Some additional information is given about cases of the same condition previously published by other authors.
3. It is suggested that injections and infusions given to newborn babies are sometimes the cause of the condition.
4. Some of the therapeutic substances and measures which may be responsible are discussed. These include antibiotics, vitamin K preparations and "subcutaneous" fluid therapy.