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首页> 外文期刊>Injury >Subacromial morphometric assessment of the clavicle hook plate.
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Subacromial morphometric assessment of the clavicle hook plate.

机译：锁骨钩板的亚肩峰形态计量学评估。

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BACKGROUND: Clavicle hook plates are an effective plate fixation alternative for distal clavicle fractures and severe acromioclavicular joint dislocations. However, post-operative complications associated with the subacromial portion of the hook include acromial osteolysis and subacromial impingement. We examine and quantify the three-dimensional position of the subacromial portion of the hook plate relative to surrounding acromial and subacromial structures in a series of cadaveric shoulders to determine if hook positioning predisposes the shoulder to these noted post-operative complications. MATERIALS AND METHODS: Fifteen cadaveric shoulders (seven males, eight females) were implanted with 15- or 18-mm hook plates. Dimensions of the acromion and hook plate were digitised and reconstructed into a three-dimensional model to measure acromion dimensions and distances of the subacromial hook relative to surrounding acromial and subacromial structures. RESULTS: Inter-specimen dimensions of the acromion were highly variable. Mean acromion width and thickness were greater in males than in females (p=0.01). The posterior orientation of the subacromial hook varied widely (mean posterior implantation angle=32.5+/-20 degrees, range 0-67 degrees). The hook pierced the subacromial bursa in 13/15 specimens, made contact with the belly of the supraspinatus muscle in 9/15 specimens, and had focal contact at the hook tip with the undersurface of the acromion in 9/15 specimens. CONCLUSIONS: The wide range of acromial dimensions leads to a high degree of variability in the positioning of the subacromial hook. The observed frequency of hook contact with surrounding subacromial structures in a static shoulder confirms that the position of the hook portion of the implant can predispose anatomic structures to the post-operative complications of subacromial impingement and bony erosion.
机译：背景：锁骨钩钢板是锁骨远端骨折和严重的肩锁关节脱位的有效钢板固定方法。但是，与钩的肩峰下部分相关的术后并发症包括肩峰骨溶解和肩峰下冲击。我们检查和量化钩板的近肩部相对于一系列尸体肩部周围的肩峰和肩部以下结构的三维位置，以确定钩的定位是否使肩部易患这些明显的术后并发症。材料与方法：15个尸体肩膀（男7例，女8例）植入15或18毫米钩板。将肩峰和钩板的尺寸数字化并重建为三维模型，以测量肩峰尺寸和肩峰下钩相对于周围肩峰和肩峰下结构的距离。结果：肩峰的标本间尺寸变化很大。男性的平均肩峰宽度和厚度大于女性（p = 0.01）。肩峰下钩的后方向变化很大（平均后植入角= 32.5 +/- 20度，范围0-67度）。钩刺穿13/15个标本的肩峰下囊，与9/15标本的棘上肌腹部接触，并在钩尖与9/15标本的肩峰底面局部接触。结论：肩峰范围广，导致肩峰下钩的位置变化很大。观察到的钩与固定肩部周围的亚肩峰下结构的接触频率证实，植入物的钩部分的位置可以使解剖结构易于发生肩峰下撞击和骨侵蚀的术后并发症。

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