Orthopaedic Department, Tauranga Hospital, Tauranga, New Zealand.
J Hand Surg Eur Vol. 2022 Jul;47(7):755-760. doi: 10.1177/17531934221081293. Epub 2022 Feb 20.
We examined the MRI scans of 35 adult hands to assess the feasibility of the hamate and the capitate as potential donor grafts in the management of comminuted intra-articular fractures at the base of the middle phalanges. Essentially neither the hamate nor the capitate were perfect anatomic matches in most digits, but the capitate had the advantage of having more uniform facets, and the capitate facet shapes were similar to those of the little finger. The measurement of angles in the coronal and sagittal plane showed that in some respects the differences between the potential graft and the base of the middle phalanges were smaller for the capitate than for the hamate. Moreover, the sagittal morphology of the capitate made it less prone to joint overstuffing than the hamate. We conclude that the capitate may be considered as a graft donor in selected cases, especially for the little finger.
我们检查了 35 只成人手的 MRI 扫描结果，评估了作为掌骨和头状骨作为治疗中间指骨基底粉碎性关节内骨折的潜在供体移植物的可行性。实际上，在大多数手指中，掌骨和头状骨都不是完美的解剖匹配物，但头状骨具有更均匀的关节面的优势，而且头状骨关节面的形状与小指相似。冠状面和矢状面角度的测量表明，在某些方面，与掌骨相比，头状骨与中间指骨基底之间的差异较小。此外，头状骨的矢状形态使其比掌骨更不易发生关节过度填充。我们得出结论，头状骨可以在某些情况下考虑作为供体移植物，特别是小指。
