A BS TRACT: Background: Helicobacter pylori (HP) infection has been associated with worse motor function in Parkinson's disease (PD). Objective: We aimed to evaluate the effects of HP eradication on PD symptoms. Methods: In this parallel-group, double-blind, randomized placebo-controlled, single-center trial, patients with PD with positive HP urea breath test and serology were block randomized (1:1) to receive standard eradication triple therapy or identically appearing placebo capsules for 1 week. Prespecified motor (International Parkinson and Movement Disorder Society Unified PD Rating Scale [MDS-UPDRS], timed tests, and home-based wearable sensor measurements), nonmotor (Leeds Dyspepsia Questionnaire and Montreal Cognitive Assessment), and quality-of-life (Parkinson's Disease Questionnaire-39) outcome measures were assessed at weeks 6, 12, 24, and 52. The primary outcome was the baseline-to-week 12 change in ON medication MDS-UPDRS motor scores. Lactulose-hydrogen breath testing for concomitant small intestinal bacterial overgrowth was performed at baseline and repeated at week 24, together with the urea breath test. Results: A total of 310 patients were screened for eligibility and 80 were randomly assigned, of whom 67 were included in the full-analysis set (32 treatment group patients, 35 placebo patients). HP eradication did not improve MDS-UPDRS motor scores at week 12 (mean difference 2.6 points in favor of placebo, 95% confidence interval: −0.4 to 5.6, P = 0.089). There was no significant improvement in any motor, nonmotor, or quality-of-life outcome at weeks 12 and 52. Both the full-analysis and per-protocol analyses (based on eradication status) supported these conclusions. Small intestinal bacterial overgrowth status did not influence treatment results. Conclusions: HP eradication does not improve clinical outcomes in PD, suggesting that there is no justification for routine HP screening or eradication with the goal of improving PD symptoms.

ObjectivesThe role of arthroscopic debridement in the painful degenerative knee is controversial. Studies have shown that arthroscopic surgery for knee osteoarthritis provides no additional benefit to optimized physical and medical therapy. There are however, limited studies on the management of the subgroup of significantly symptomatic patients who remain refractory to maximal conservative treatment and are poor candidates for knee replacement surgery.We propose that with careful patient selection, arthroscopic debridement can provide good symptomatic relief with sustained benefits in the degenerative knee.MethodsWe performed a retrospective, single-surgeon study of 180 consecutive knee arthroscopies performed in 169 patients, aged 40 years and above, who had mechanical symptoms affecting their daily lives and underwent arthroscopic debridement after failure of a minimum 2 months of optimized medical and physical therapy. Severity of the knee osteoarthritis on plain radiographs was assessed using the Kellgren-Lawrence classification.Functional and satisfaction scores were assessed using Oxford Knee Score, Koos Knee Survey, Short Form-36, Numeric Pain Rating Scale, and questions adapted from the North American Spine Society Questionnaire.ResultsExcellent functional outcomes and patient satisfaction were reported in the majority of patients over the follow-up timeframe of 2–8 years. The mean pre-operative Kellgren-Lawrence score was 2.02 (SD 0.580). Significant improvements compared to pre-operative scores were seen across all scoring systems tested. 90% of patients reported good to excellent results.ConclusionArthroscopic knee debridement can provide good symptomatic relief and sustained benefits in significantly symptomatic patients with early degenerative knees who have failed conservative management. This is most useful in patients with mechanical symptoms secondary to degenerative meniscal tears or chondral flaps, and those with symptomatic patellofemoral osteoarthritis.