Panjabi M M, Lindsey R W, Walter S D, White A A
Department of Orthopaedics and Rehabilitation, Yale University, School of Medicine, New Haven, Connecticut 06510.
J Orthop Trauma. 1989;3(1):29-32. doi: 10.1097/00005131-198903010-00006.
The present study was designed to analyze the usefulness of plain radiographs in evaluating bone healing. Rabbit tibiae were osteotomized, externally fixed, and allowed to heal for 3-8 weeks. Bones were harvested, x-rayed, and tested to failure in a dynamic torsion tester. AP and lateral radiographs of 10 rabbit tibia pairs and 10 individual rabbit tibiae were selected randomly for use in a questionnaire, given to 93 physicians who routinely assess fracture healing to evaluate clinicians' ability to assess bone strength. The results indicated that clinicians can differentiate the relative strength of bones by comparing two sets of radiographs. However, the strength determination from a single set of radiographs of a fracture is unreliable, the tendency being to evaluate the fracture to be weaker than it actually is.
本研究旨在分析平片在评估骨愈合方面的实用性。将兔胫骨截断，进行外固定，使其愈合3至8周。采集骨骼，进行X线检查，并在动态扭转试验机上进行破坏试验。从10对兔胫骨和10根单个兔胫骨的前后位和侧位X线片中随机选取用于问卷调查，问卷发放给93位常规评估骨折愈合情况的医生，以评估临床医生评估骨强度的能力。结果表明，临床医生可以通过比较两组X线片来区分骨骼的相对强度。然而，根据骨折的单组X线片确定强度是不可靠的，其倾向是将骨折评估得比实际情况更弱。
