[On the "vaccum phenomenon" in 20 cases].
D001168:Arthritis; D006801:Humans; D007592:Joint Diseases; D007717:Knee; D010003:Osteoarthritis; D011631:Pubic Symphysis; D012782:Shoulder; D012785:Shoulder Joint; D013122:Spinal Diseases
KNEE; PUBIC SYMPHYSIS; SHOULDER ARTHROSES; SPINAL DISEASES