This issue of Orthopedics Clinics will be surveying a broad range of topics across sub-specialty areas on Obesity in Orthopedic Surgery. Each issue in the series is edited by an experienced team of surgeons from the prestigious Campbell Clinic. Articles in this issue will cover the following topics, among others: Obesity the modifiable risk factor in total joint Arthroplasty, The role of bariatric surgery in the obese total joint Arthroplasty patient, Obesity in Pediatric Trauma, Obesity in NM conditions, The influence of obesity on total elbow arthroplasty, The effect of obesity in shoulder arthroplasty outcomes and complications, Effect of Obesity on Elective Foot and Ankle Surgery, and Foot and Ankle Surgery in Diabetic Populations.