This challenge increases exponentially in elderly patients with poor bone quality and substantial articular comminution, and surgical outcomes have historically been poor in such patients.
这类情况的挑战性在骨质较差且关节面严重粉碎的老年患者将会成倍增加，以往对其手术治疗的效果往往很差。
Conclusion After ovariectomy, the absorption of bone prevails over osteogenesis, the osteoporotic changes occur, and the fracture healing is poor in quality.
结论去势后骨吸收大于骨形成，出现疏松化表现，骨折的愈合质量差。
Disadvantages: fragile, poor insulation and portability, expensive, difficult to powder bone content and quality assurance and identification.
缺点：易碎，隔热性和便携性较差，价格贵，粉骨含量和品质很难保证和鉴别。
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