Related Experiment Video

Updated: Sep 26, 2026

The 6-hydroxydopamine Rat Model of Parkinson's Disease
08:10

The 6-hydroxydopamine Rat Model of Parkinson's Disease

Published on: October 27, 2021

Surgery for Parkinson's disease: lack of reliable clinical trial evidence

R L Stowe1, K Wheatley, C E Clarke

  • 1Clinical Trials Unit, University of Birmingham, Park Grange, 1 Somerset Road, Edgbaston, Birmingham B15 2RR, UK. r.l.stowe.1@bham.ac.uk

Journal of Neurology, Neurosurgery, and Psychiatry
|March 18, 2003
PubMed

Insights

Parkinson's disease (PD) surgery shows renewed interest, but evidence quality is low. More large, randomized trials are crucial to determine surgery's true value for patients.

Area of Science:

  • Neurosurgery
  • Neurology
  • Evidence-Based Medicine

Background:

  • Parkinson's disease (PD) surgery has seen a resurgence with new techniques.
  • Over 500 studies and 10,000 patients have been documented since 1990.

Purpose of the Study:

  • To systematically review the quality of evidence for surgical interventions in Parkinson's disease.
  • To identify the need for improved research methodologies in PD surgery.

Main Methods:

  • Systematic literature search of studies on PD surgery published post-1990.
  • Analysis of study quality, patient numbers, follow-up duration, outcome measures, and control group usage.

Main Results:

  • Over 500 studies identified, but only 7 were randomized controlled trials (RCTs) involving 196 patients.
  • Most studies were of poor quality, lacking sufficient patients, adequate follow-up, and appropriate outcome measures.
  • Significant limitations hinder reliable assessment of PD surgery's efficacy.

Conclusions:

  • Current evidence for Parkinson's disease surgery is insufficient due to poor study quality.
  • Larger, high-quality randomized controlled trials are essential.
  • Future research must focus on patient-reported quality of life and cost-effectiveness for surgical interventions.

More Related Videos

Controlling Parkinson's Disease With Adaptive Deep Brain Stimulation11:12

Controlling Parkinson's Disease With Adaptive Deep Brain Stimulation

Published on: July 16, 2014

Related Concept Videos

Parkinson's Disease: Treatment01:24

Parkinson's Disease: Treatment

Neurodegenerative disorders, such as Parkinson's Disease (PD), involve the gradual and irreversible destruction of neurons in particular brain areas. These disorders exhibit standard features like proteinopathies, selective vulnerability of some neurons, and an interaction of intrinsic properties, genetics, and environmental influences in neural injury.
Parkinson's Disease is primarily a result of the loss of dopaminergic neurons in the substantia nigra pars compacta. The cornerstone of its...
Parkinson's Disease: Overview01:15

Parkinson's Disease: Overview

Neurodegenerative disorders are progressive diseases that cause irreversible damage and loss to neurons in specific brain areas. Examples of these disorders include Parkinson's disease, Alzheimer's disease, Multiple Sclerosis (MS), and Amyotrophic Lateral Sclerosis (ALS). These disorders share characteristics such as proteinopathies, selective neuronal vulnerability, and a complex interplay between genetic and environmental factors. The primary therapeutic goal for these conditions is to...
Parkinson Disease ll: Pathophysiology01:24

Parkinson Disease ll: Pathophysiology

Parkinson disease (PD) is a progressive neurodegenerative disorder primarily affecting movement, with additional non-motor features. Its pathophysiology involves complex interactions among genetic susceptibility, environmental exposures, and cellular dysfunction, including dopaminergic neuron loss, protein aggregation, and mitochondrial impairment.Selective NeurodegenerationA key feature is the degeneration of dopaminergic neurons in the substantia nigra pars compacta, leading to reduced...
Parkinson Disease l: Introduction01:24

Parkinson Disease l: Introduction

Parkinson’s disease is a chronic, progressive neurodegenerative disorder that primarily affects movement. It is characterized by motor symptoms such as resting tremors, muscle rigidity, bradykinesia (slowness of movement), and postural instability. Patients may notice hand tremors at rest, stiffness during movement, or a shuffling gait. In addition to motor features, non-motor symptoms include sleep disturbances, mood and behavioral changes, constipation, and cognitive impairment, all of which...
Neural Regulation01:47

Neural Regulation

Digestion begins with a cephalic phase that prepares the digestive system to receive food. When our brain processes visual or olfactory information about food, it triggers impulses in the cranial nerves innervating the salivary glands and stomach to prepare for food.
Psychosurgery01:30

Psychosurgery

Psychosurgery, the surgical alteration or permanent removal of brain tissue to alleviate severe psychological conditions, stands as one of the most radical and controversial treatments in the history of mental health care. Its development and application have evolved significantly, marked by dramatic shifts in scientific understanding and ethical perspectives.
Historical Development of Psychosurgery
In the 1930s, Portuguese neurologist Antonio Egas Moniz introduced a surgical procedure designed...