Schulz Christoph Udo, Anetzberger Hermann, Pfahler Manfred, Refior Hans Jürgen, Mueller-Gerbl Magdalena
Department of Orthopaedic Surgery, Ludwig Maximilians Universitaet Munich, Germany.
J Shoulder Elbow Surg. 2004 Jan-Feb;13(1):35-8. doi: 10.1016/j.jse.2003.09.007.
Even though it is believed that a sublabral foramen (SF) requires no treatment, no objective data are available to establish whether this condition bears a relationship to anterior-inferior glenohumeral instability. Therefore, the influence on glenoid subchondral bone mineralization of an isolated SF was investigated, because the individual distribution of subchondral bone mineralization may be used as an indirect parameter for long-term stress distribution of joints. Two age- and side-matched groups of healthy glenohumeral specimens with SF (n = 10, aged 37-85 years) and without SF (n = 10, aged 36-86 years) were examined by computed tomography osteoabsorptiometry. As variables for comparison, the anterior and posterior density maxima on the glenoid were measured in a standardized manner. No shift of the anterior density maximum [p(x1) = 0.353/p(y1) = 0.739] was found between both groups, which is in contrast to anterior glenohumeral instability. This indicates a long-term stress distribution in SF shoulders comparable to that in non-SF shoulders. The data suggest that an isolated SF is probably not disproportionately related to glenohumeral instability and support the general assumption that surgical treatment of SF is not required.
尽管人们认为盂唇下孔（SF）无需治疗，但尚无客观数据来确定这种情况是否与盂肱关节前下不稳定有关。因此，研究了孤立性SF对盂下软骨下骨矿化的影响，因为软骨下骨矿化的个体分布可用作关节长期应力分布的间接参数。通过计算机断层扫描骨吸收测定法检查了两组年龄和侧别匹配的健康盂肱标本，一组有SF（n = 10，年龄37 - 85岁），另一组无SF（n = 10，年龄36 - 86岁）。作为比较变量，以标准化方式测量了盂上的前后密度最大值。两组之间未发现前密度最大值的移位[p(x1) = 0.353/p(y1) = 0.739]，这与盂肱关节前不稳定情况相反。这表明SF肩部的长期应力分布与非SF肩部相当。数据表明，孤立性SF可能与盂肱关节不稳定无不成比例的关系，并支持一般不需要对SF进行手术治疗的假设。
