Clark I P, James D F, Colwill J C
J Bone Joint Surg Am. 1978 Apr;60(3):325-7.
To determine the possible relevance of intra-articular pressure in the production of ulnar drift, metacarpophalangeal joints of fresh cadaver specimens were injected with water to increase the intra-articular pressure. Of the thirty-two joints tested, ulnar deviation was produced in twenty-three, flexion in twenty-four, and simultaneous ulnar deviation and flexion (ulnar drift) in nineteen. In two or three instances, the displacement was in extension or radial deviation. These results suggest that elevated intra-articular pressure may be a factor in the initiation of ulnar drift in patients with rheumatoid arthritis.
为了确定关节内压力在尺侧偏移产生过程中可能的相关性，向新鲜尸体标本的掌指关节注入水以增加关节内压力。在测试的32个关节中，23个出现尺侧偏斜，24个出现屈曲，19个同时出现尺侧偏斜和屈曲（尺侧偏移）。在两三个实例中，移位是伸直或桡侧偏斜。这些结果表明，关节内压力升高可能是类风湿性关节炎患者尺侧偏移起始的一个因素。
