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Fig. 4A — Anterior views of compression arm and end plate. Image of compression arm and end plate over port on fluoroscopy (anteroposterior view) in 40-year-old man. Swedish lap band port (Sagaband, Obtech Medical) lies under compression device (Compressar Universal System, Instromedix) with access point under notch. Needle is placed obliquely for illustration, but more vertical approach is usually easier.