Deep Brain Stimulation Expert Views

Dr. Michael Kruer discusses the use of Deep Brain Stimulation (DBS) for treating movement disorders in patients with cerebral palsy. He emphasizes that DBS aims to reduce unwanted muscle activations and improve quality of life, but it does not directly enhance a person's ability to move better. Collaboration between therapists, physicians, and medical providers is crucial for success. While DBS can sometimes improve posture and reduce pain, its effectiveness varies among patients. Dr. Kruer highlights the importance of shared decision-making and setting realistic expectations, as not all patients experience dramatic improvements.

Dr. Terence Sanger explains that deep brain stimulation (DBS) is a treatment that targets electrically active regions of the brain, affecting tens to hundreds of millions of cells. He notes that DBS is anatomically specific but impacts a broad area of brain tissue. For cerebral palsy, particularly secondary dystonia, DBS has shown potential but requires individualized targeting since no two children have the same brain deficits and strengths. Dr. Sanger emphasizes that earlier approaches to DBS were less effective because they assumed all children had the same problem, leading to suboptimal results. He advocates for a tailored approach, borrowing techniques from epilepsy surgery, to improve outcomes.

Terry Sanger, a child neurologist at Children's Hospital Los Angeles, explains that Deep Brain Stimulation (DBS) is a treatment used for various brain disorders, including dystonia in children. Dystonia involves involuntary muscle contractions leading to twisting or distorted movements, often caused by brain injuries affecting the basal ganglia. DBS can significantly improve dystonia, especially genetic forms, by targeting abnormal neural activity in the brain. However, in cerebral palsy, dystonia is often accompanied by other movement issues like spasticity or weakness, which DBS may not address. The procedure involves implanting wires in the brain connected to a pacemaker in the chest, which sends electrical pulses to regulate neural activity.

Deep Brain Stimulation (DBS) has been studied as a treatment for pain in children with dystonia, including those with dyskinetic cerebral palsy. In a study involving 140 patients, 45% reported pain before DBS, with common areas of pain being total body spasms, hips, legs, back, and shoulders. After DBS, significant improvements were observed in pain levels across various subgroups, including acquired dystonias and idiopathic dystonias. Persistent pain reduced by 25%, and 29% of patients reported no longer experiencing pain. Pain severity also decreased, with very severe pain reducing by 30% and 24% of patients becoming pain-free. These results were statistically significant for the whole cohort and most subgroups.

Dr. Daniel Lumsden discusses the potential of Deep Brain Stimulation (DBS) as a treatment for dystonia, including cases related to cerebral palsy. He highlights the importance of tools like the dyskinesia impairment scale for clinical decision-making and research. This scale helps measure movement disorders and could be applied across different patient groups. Dr. Lumsden emphasizes the promising evidence supporting DBS, especially for primary dystonia and its increasing use in pediatric cases. He advocates for further research and multi-center studies to refine its application and understand its effects better.

Dr. Lior Elkaim's meta-analysis on Deep Brain Stimulation (DBS) for pediatric dystonia highlights that the treatment is most effective for patients with inherited dystonia without nervous system pathology and idiopathic dystonia. The study found a 50.5% median improvement in BFM DRS scores for idiopathic dystonia patients. Factors predicting better outcomes include older age at dystonia onset, inherited dystonia without nervous system pathology, and truncal involvement. However, patients with viral, post-hemorrhagic, or post-traumatic dystonia showed the least improvement, with a median postoperative improvement of only 10.5%.

Darcy Fehlings discusses the use of deep brain stimulation (DBS) as part of the clinical practice guidelines for managing cerebral palsy and dystonia. She highlights that the guidelines were developed in collaboration with the American Academy of Developmental Medicine and include a care pathway site. This site provides a five-minute evidence summary, links to systematic reviews, and practical tools for assessing and managing hypertonia and dystonia. Fehlings encourages reviewing these resources to better understand and apply DBS in clinical settings.