Deciding Yes on Selective Dorsal Rhizotomy (SDR)
Learning more about the procedure and meeting the doctors – Charles B. Stevenson, MD, a pediatric neurosurgeon, and Paola Maria L. Mendoza-Sengco, MD, a pediatric physical medicine and rehabilitation physician – helped solidify the family’s decision.
The SDR, explained Stevenson, is a complex — but safe — procedure that reduces spasticity in the legs and allows patients like Hunter to continue to improve upon their walking while working toward independent mobility.
“He had significant scissoring while walking, and very abnormal reflexes indicative of a lot of unbridled spasticity,” said Stevenson.
“Scissoring” occurs when the muscles on the inner half of each thigh pull the leg in the opposite direction. When Hunter put his left foot out in front, it would get pulled to the right and when he tried to take a step with his right foot, it would get pulled to the left.
“Your two legs cross over one another, resembling a pair of scissors,” said Stevenson.
In addition, Hunter also suffered from tight hamstrings. So tight they prevented his legs from fully extending. His calf muscles were severely affected, as well.
“When (the calf muscles) are tight, these children are often unable to get off their tippy toes. [Hunter] was always on them,” said Stevenson. “When he would walk, his legs would cross over and he was always on his toes. And that makes it very hard to get anywhere in a productive fashion. These are very common gait abnormalities seen in many individuals with spastic CP.”
Getting their son the help he needed was their top priority, so the Watters decided to move forward with the surgery after talking with Stevenson and Mendoza-Sengco in a comprehensive counseling session in the Surgical Spasticity Clinic.
“He was so personable. He went over it step by step on what to expect,” said Michelle, recalling their initial, in-clinic SDR discussions. “We decided to do it because we wanted to give [Hunter] the most amount of time to live — with his maximum potential — for as long as possible.”
Soon afterwards Hunter's SDR was performed at Cincinnati Children’s.
“We went in and saw him right away. And he moved his leg. He actually pulled his leg up. My husband and I were in tears,” said Michelle, recalling the happy moment. “We could notice the changes immediately. It was just fascinating.”
Hunter’s recovery did prove to be fast, but still required time and effort. After the procedure, a protocol of intensive outpatient physical therapy comprised of up to 160 sessions in that first year is recommended to maximize the functional benefits of the surgery. Patients must re-learn certain muscle movements, improve range of motion and flexibility in their legs, build new strength, and improve coordination in their legs. Depending on how quickly they progress, it can take anywhere from a couple weeks to a couple months before patients begin walking following SDR.
“There are so many variables and everyone recovers at their own pace, but Hunter did begin walking relatively quickly as most children do,” said Stevenson. “Between stretching to improve the range of motion in their legs, and building strength, patients are able to progressively improve their balance and ability to take steps more efficiently.”