Spiral fracture of my right femur at age 13 or so. Spent a few weeks in traction followed by a couple months in a wheelchair in a near full-body cast. Most of the rest of the year learning to walk again.
Long-term the injury likely knocked a few inches off my adult height (I'm 5' 6" with short legs) and the leg is less flexible in that I can put my left leg behind my head, but not my right. As for psychological effects, my father believes it exacerbated my introversion and social avoidance tendencies. I'm not personally cognizant of the causal linkages there, but I've no reason to dispute the assessment.