Park Seong Cheol, Gong Hyun Sik, Kim Kahyun, Lee Seung Hoo, Kim Sehun, Baek Goo Hyun
Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul, Korea.
Department of Orthopedic Surgery, Seoul National University Bundang Hospital, Seongnam, Korea.
J Bone Metab. 2017 Aug;24(3):175-181. doi: 10.11005/jbm.2017.24.3.175. Epub 2017 Aug 31.
To determine whether olecranon fractures have osteoporotic features such as age-dependent, low bone attenuation and low-energy trauma as a cause of injury.
Elbow computed tomography (CT) and medical record review were performed in 114 patients (53 males and 61 females) with acute olecranon fractures. The mean age was 57 years. Bone attenuation was measured on the central part of the olecranon on sagittal CT images avoiding the fracture, and on the distal humerus (distal metaphysis and medial and lateral condyles) on coronal CT images. We compared bone attenuation and causes of injury (high or low energy trauma) between younger (<50 years) and older (≥50 years) patients in each gender. Multiple regression analysis was performed to determine the effect of age and gender on bone attenuation.
Mean bone attenuation in older male and female patients was significantly lower than in younger patients, except at the medial condyle in men. The proportion of low-energy trauma in older male patients was significantly higher than in younger male patients. In female patients, low-energy trauma was predominant in both younger and older patients. Age and female gender had significantly negative effects on bone attenuation.
This study demonstrated that olecranon fractures have osteoporotic features, including age-dependent low bone attenuation and low-energy trauma as the predominant cause of injury. Our results suggest that osteoporosis evaluation should be considered for patients aged 50 years or more with olecranon fractures.
确定鹰嘴骨折是否具有骨质疏松特征，如与年龄相关的低骨密度以及作为损伤原因的低能量创伤。
对114例急性鹰嘴骨折患者（53例男性和61例女性）进行肘部计算机断层扫描（CT）及病历回顾。平均年龄为57岁。在矢状位CT图像上避开骨折部位测量鹰嘴中央部分的骨密度，并在冠状位CT图像上测量肱骨远端（远端干骺端以及内外侧髁）的骨密度。我们比较了不同性别中年轻（<50岁）和年长（≥50岁）患者之间的骨密度及损伤原因（高能量或低能量创伤）。进行多元回归分析以确定年龄和性别对骨密度的影响。
除男性的内侧髁外，年长男性和女性患者的平均骨密度显著低于年轻患者。年长男性患者中低能量创伤的比例显著高于年轻男性患者。在女性患者中，低能量创伤在年轻和年长患者中均占主导。年龄和女性性别对骨密度有显著的负面影响。
本研究表明鹰嘴骨折具有骨质疏松特征，包括与年龄相关的低骨密度以及低能量创伤作为主要损伤原因。我们的结果提示，对于50岁及以上的鹰嘴骨折患者应考虑进行骨质疏松评估。
