Pruzansky M E, Pugh J, Siffert R S
Department of Orthopaedics, Mount Sinai School of Medicine, New York, NY.
Mt Sinai J Med. 1990 Jan;57(1):30-3.
Patients with trigger thumb and trapeziometacarpal joint arthritis accompanied by swan-neck deformity of their first rays find that their arthritic pain becomes worse whenever their thumbs "catch." Six hands with adduction contracture and arthritis of the trapeziometacarpal joint are studied biomechanically and demonstrate significantly excessive shear forces (p less than 0.01) around their trapeziometacarpal joint relative to six normal hands. Increased pain with deformity suggests aggressive treatment of trigger thumb in cases such as these.
患有扳机指和大多角骨-掌骨关节关节炎并伴有第一掌骨鹅颈畸形的患者发现，每当他们的拇指“卡顿”时，其关节炎疼痛就会加重。对6例伴有大多角骨-掌骨关节内收挛缩和关节炎的手部进行了生物力学研究，结果表明，相对于6例正常手部，这些手部的大多角骨-掌骨关节周围存在明显过大的剪切力（p<0.01）。畸形导致疼痛加剧，提示在这类病例中应对扳机指进行积极治疗。
