Evaluation of the efficacy of wrist arthroscopic surgery for aseptic necrosis of lunate bone

ObjectiveTo explore the use of wrist arthroscopy for treatment of aseptic necrosis of lunate bone and its curative effect.MethodsFrom March 2012 to January 2016, 12 patients with aseptic necrosis of lunate bone underwent necrotic lunate bone extirpation assisted by wrist arthroscopy, and the scaphocapitate joint treated with fusion‐stabilization were selected. Among these patients, 10 patients were male and two patients were female. The age of these patients ranged from 25 to 42 years old, with an average age of 32 years old. These lesions were located in the right hand in eight patients, and in the left hand in four patients. Lichtman stage: stage IIIA in two patients, and stage IIIB in 10 patients. All patients were diagnosed by anterior lateral radiographs and magnetic resonance imaging (MRI). From the second day after the surgery, patients underwent active motion for the metacarpophalangeal joint and interphalangeal joints. When the X‐ray film indicated that the fracture had healed, patients began to resume their daily activities and work. After surgery, the plain films of all planes, including the axial plane of the scaphoid, were taken every month, until fracture healing. All patients were followed up for a mean duration of 8 months, and the Mayo wrist score was used to assess the range of motion of the wrist joint and grip force during the follow‐ups for objective function evaluation.ResultsFracture healing was obtained in all patients within 9–12 weeks after the operation, and average healing time was 10 weeks. The duration of follow‐up ranged between 6–14 months, and the mean duration was 8 months. According to the modified Mayo wrist score, the objective function of the wrist joint was evaluated as follows: flexion and extension range of the wrist joint was 40°–110°, with an average of 105°, which was 80% of that of the unaffected side. Radioulnar deviation was 45°‐80°, with an average of 55°, which was 82% of that of the unaffected side. Grip force was 25–48 kg, with an average of 40 kg, which was 84% of that of the unaffected side. The modified Mayo wrist score was good in eight patients, acceptable in three patients, and poor in one patient.ConclusionsWrist arthroscopy is an effective and feasible tool for the treatment of aseptic necrosis of the lunate bone, and the right kind of surgical procedure should be selected for different stages of the disease, and wrist arthroscopy is applied timely, in order to achieve the desired therapeutic effect.     

带掌侧血管蒂部分头状骨移位替代坏死月骨的解剖学研究

目的 观察头状骨的血供分布特点,为带掌侧血管蒂部分头状骨移位替代坏死月骨的手术提供解剖学依据.方法 观察100块头状骨标本,将头状骨分成远近两部分,记录各部分掌、背侧滋养血管孔的数量,测量血管孔大小,对所测数据进行统计学分析.制作保留骨和骨外周血管的上肢铸型标本2侧,观察头状骨主要滋养血管的管径、数量和位置;制作上肢的血管灌注标本2侧,解剖头状骨掌侧滋养血管.观察显示骨内滋养血管的头状骨标本5侧.结果 100块头状骨标本,掌背侧、掌侧远近端均有丰富的滋养血管孔,背侧滋养血管孔数量略多于掌侧.掌、背侧血管孔径大小方面,掌侧血管孔径大于背侧血管孔(P＜0.01),差异有统计学意义.局部上肢铸型标本和血管灌注标本显示与头状骨标本血管孔的分布和数量相符.结论 头状骨远近端均有丰富的滋养血管孔,掌侧滋养血管孔分布管径上优于背侧.表明保留掌侧血管蒂的头状骨近端部分转移替代坏死月骨是有其解剖学基础的,为月骨坏死提供了一种新的手术尝试依据.     

保留股骨颈型髋关节假体置换治疗晚期青壮年股骨头坏死中期随访研究

目的 观察保留股骨颈型人工髋关节假体治疗晚期青壮年股骨头坏死的中期疗效.方法 对2002年8月至2009年11月接受置换5年以上的21例28髋青壮年股骨头坏死骨关节炎并接受保留股骨颈型髋关节置换的患者资料进行回顾性分析.患者年龄26～51岁,平均36岁;其中男性16例22髋,女性5例6髋.对随访患者行Harris髋关节评分,拍摄X线片了解假体的位置以及有无松动、远端有无骨质吸收情况.术前Harris评分平均48.5分.结果 2例患者失访,19例26髋获得随访,随访时间63～85个月,平均67个月.3例患者出现下肢不等长,但长度差异＜2 cm.无大腿疼痛发生,无一例患者行髋关节翻修.末次随访时Harris评分平均90.2分.结论 保留股骨颈型髋关节假体置换治疗晚期青壮年股骨头坏死中期疗效满意.