Sitting on a basketball.
D000063:Accidents, Traffic; D000293:Adolescent; D000328:Adult; D004470:Economics, Medical; D004739:England; D005260:Female; D006801:Humans; D008297:Male; D009493:Neurosurgery; D010264:Paraplegia / Q000534:rehabilitation*; D011782:Quadriplegia / Q000534:rehabilitation*; D012047:Rehabilitation Centers; D013119:Spinal Cord Injuries / Q000503:physiopathology / Q000534:rehabilitation* / Q000628:therapy; D013997:Time Factors; D014481:United States; D014857:Warfare