Severe truncal flexion in a man with Parkinson’s disease Michael Samuel and Robert Weeks

CASE PRESENTATION A 66-year-old man was referred to a movement disorder clinic for diagnosis and management of an abnormal posture which had been present for 2 years. His trunk would flex forward when walking. He could correct this transiently by deliberately straightening up. He could extend his neck so that he could see forward. When lying flat, the trunk flexion resolved.