Wakasugi Takuma, Shirasaka Ritsuro, Kimura Hiroaki, Wakabayashi Yoshiaki
Department of Orthopaedic Surgery, Tsuchiura Kyodo Hospital, Ibaraki, Japan.
Hand Surg. 2013;18(3):413-5. doi: 10.1142/S0218810413720271.
We report a case of closed rupture of the flexor tendons of the little finger caused by calcium pyrophosphate dihydrate crystal deposition disease of the pisotriquetrum joint. The patient could not flex the little finger and did not have wrist pain. Plain radiographs of the affected wrist joint showed severe arthritic changes of the pisotriquetrum joint and calcification around the joint. At operation, the pisotriquetrum joint capsule was ruptured and involved the flexor tendon of the little finger. The distal stump of the flexor tendon was transferred to the flexor tendon of the ring finger, and the pisiform was resected. Histological examination with polarized light microscopy revealed crystals showing weakly positive birefringence in the calcification.
我们报告一例由豌豆三角骨关节炎性焦磷酸钙双水合物晶体沉积病导致的小指屈肌腱闭合性断裂病例。患者小指无法屈曲，且无腕部疼痛。患侧腕关节的X线平片显示豌豆三角骨关节有严重的关节炎改变及关节周围钙化。手术中发现豌豆三角骨关节囊破裂并累及小指屈肌腱。将屈肌腱的远端残端转移至环指屈肌腱，并切除豌豆骨。偏振光显微镜组织学检查显示钙化部位的晶体呈弱阳性双折射。
