Ferretti C, Premviyasa V, Reyneke J, Ripamonti U
Department of Maxillofacial & Oral Surgery, University of Pretoria, Pretoria, South Africa; Formerly School of Oral Health Sciences, University of the Witwatersrand, Johannesburg, South Africa; Bone Research Unit, Department of Internal Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
Division of Maxillofacial & Oral Surgery, School of Oral Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
Br J Oral Maxillofac Surg. 2019 Sep;57(7):627-631. doi: 10.1016/j.bjoms.2019.04.012. Epub 2019 Jun 14.
This study sought to find the mass of particulate cortico-cancellous bone graft required per 1 cm continuity defect of the mandible. Harvested bone was weighed, milled and maximally compressed in a syringe. The defect length (DL) was measured in centimetres, and the compressed bone volume (CBV) used was recorded. The wet bone mass (WBM) of bone required per centimetre of mandibular defect, and the mass of bone yielding 1cc of compressed bone was calculated. Results were analysed statistically to determine if clinically meaningful differences exist between male and female iliac crest. Forty three patient records were reviewed (28 female). Thirty patients had bilateral, and 13 patients had unilateral iliac crest harvest. Mean WBM used per centimetre of mandible defect was 6.9 g.WBM required to produce 1cc of CBV was 2.0g. For the bilateral harvest group the mean DL was 10.3 cm, the mean WBM was 66.7 g, and the mean CBV was 33.9cc. There was no significant difference in mean WBM between male (72.8 g) and female (62 g) patients. The mean CBV for males (39.7 g) was significantly higher than females (29.5 g). For patients who had unilateral harvest the mean DL was 7.7 cm, the mean WBM harvested was 59.1 g, and the mean CBV was 29.4cc. The mean wet bone mass of posterior iliac crest required to graft each centimetre of mandibular segmental defect is 6.9 grams. A unilateral posterior iliac crest harvest will yield on average 59.1 grams of bone whilst a bilateral posterior iliac crest harvest will yield on average 66.7 grams.
本研究旨在确定下颌骨每1厘米连续性缺损所需的颗粒状皮质松质骨移植块的质量。将采集的骨称重、研磨并在注射器中进行最大程度压缩。以厘米为单位测量缺损长度（DL），记录所用压缩骨体积（CBV）。计算每厘米下颌骨缺损所需骨的湿骨质量（WBM）以及产生1立方厘米压缩骨的骨质量。对结果进行统计学分析，以确定男女髂嵴之间是否存在具有临床意义的差异。回顾了43例患者记录（28例女性）。30例患者进行了双侧髂嵴采集，13例患者进行了单侧髂嵴采集。每厘米下颌骨缺损平均使用的WBM为6.9克。产生1立方厘米CBV所需的WBM为2.0克。对于双侧采集组，平均DL为10.3厘米，平均WBM为66.7克，平均CBV为33.9立方厘米。男性（72.8克）和女性（62克）患者的平均WBM无显著差异。男性的平均CBV（39.7克）显著高于女性（29.5克）。对于进行单侧采集的患者，平均DL为7.7厘米，平均采集的WBM为59.1克，平均CBV为29.4立方厘米。移植每厘米下颌骨节段性缺损所需的后髂嵴平均湿骨质量为6.9克。单侧后髂嵴采集平均可获得59.1克骨，而双侧后髂嵴采集平均可获得66.7克骨。
