Is surgery of the tendons of the knee flexor muscles justified in cerebral palsy

: The lengths of the tendons and muscle belly connective tissue envelopes of the knee flexor muscles of 6 healthy and 11 children with cerebral palsy were measured. The restricted passive knee extension was found to be associated with abnormally short tendons in all cases of contracture. This correlation provided an experimental support for the surgical lengthening of the tendon.