古墳出土砥石の基礎的研究―近畿地方の事例―

publisher奈良本稿では古墳時代の墳墓から出土した砥石について、近畿地方の事例を集成し、墓と砥石の関係を検討しようとするものである。古墳から稀に砥石が出土することがあるが、これらの砥石について具体的に検討が加えられることは少なかった。そこで全国的な視点での検討に向けて、本稿では近畿地方出土の事例を集成し、その内容について考えたい。また、この問題と関連して古墳時代研究において特に注目されている「携帯用砥石一提げ砥」をとりあげ、弥生時代～ 近世までの「提げ砥」を概観しながら、そのもつ意味について考えたい

Median Arcuate Ligament and Origin of the Celiac Artery Proximity Change in Patients after Surgery to Correct Adult Spinal Deformity: Potential Risk Factors for Acute Celiac Artery Compression Syndrome

Introduction: This study aimed to determine whether the proximity of the median arcuate ligament (MAL) and the celiac artery (CA) changes in patients following surgery to correct adult spinal deformity (ASD). We hypothesized that the distance between the MAL and the CA shortens after corrective spinal surgery, which may cause acute celiac artery compression syndrome (ACACS). Methods: A total of 89 patients (68.4±7.6 years; 7 men/82 women) with ASD treated with spinal correction surgery were included in the present retrospective study. The level of the MAL, CA, and distance between the MAL and the CA (DMC) were determined via reconstructed computed tomography. MAL overlap was determined preoperatively and postoperatively. Results: The MAL and CA moved caudally following surgery. On average, after surgery, no changes in DMC were observed. We found preoperative MAL overlap in 32 (36%) patients, who also had postoperative MAL overlap. No patients showed any MAL overlap postoperatively. Conclusions: Contrary to our hypothesis, the distance between the MAL and the CA did not shorten, and emerging MAL overlap was not observed postoperatively