Pesce Vito, Speciale Domenico, Sammarco Giulio, Patella Silvio, Spinarelli Antonio, Patella Vittorio
Department of Clinical Methodology and Surgical Techniques, Orthopedics Section II, University of Bari, Bari, Italy.
Clin Cases Miner Bone Metab. 2009 May;6(2):131-5.
Osteoporotic fractures represent one of the most common cause of disability and one of the major voice in the health economic budget in many countries of the world. Fragility fractures are especially meta-epiphyseal fractures, in skeletal sites with particular biomechanic characteristic (hip, vertebrae), complex and with more fragments, with slow healing process (mineralization and remodeling) and co-morbidity. The healing of a fracture in osteoporotic bone passes through the normal stages and concludes with union of the fracture although the healing process is prolonged. Fractures in the elderly osteoporotic patients represent a challenge to the orthopaedic surgeons. Osteoporosis does not only increase the risk of fracture but also represents a problem in osteofixation of fractures in fracture treatment. The major technical problem that surgeons face, is the difficulty to obtain a stable fixation of an implant due to osteoporotic bone. The load transmitted at the bone-implant interface can often exceed the reduced strain tolerance of osteoporotic bone.IN THE TREATMENT OF OSTEOPOROTIC FRACTURES IT IS IMPORTANT TO CONSIDER DIFFERENT ASPECTS: general conditions of elderly patient and comorbidity, the reduced muscular and bone mass and the increased bone fragility, structural modifications as medullary expansion.The aim of surgical treatment is to obtain a stable fixation that reduces pain and permits an early mobilization.
骨质疏松性骨折是导致残疾的最常见原因之一,也是世界上许多国家医疗卫生经济预算中的主要支出项目之一。脆性骨折尤其指干骺端骨折,发生在具有特定生物力学特征的骨骼部位(髋部、脊椎),骨折情况复杂,碎骨片较多,愈合过程缓慢(矿化和重塑)且常伴有合并症。骨质疏松性骨骨折的愈合过程虽会延长,但仍会经历正常阶段并最终实现骨折愈合。老年骨质疏松患者的骨折给骨科医生带来了挑战。骨质疏松不仅增加了骨折风险,还在骨折治疗的内固定方面带来问题。外科医生面临的主要技术问题是,由于骨质疏松性骨,难以实现植入物的稳定固定。在骨 - 植入物界面传递的负荷常常会超过骨质疏松性骨降低的应变耐受性。在治疗骨质疏松性骨折时,需要考虑不同方面:老年患者的一般状况和合并症、肌肉和骨量减少以及骨脆性增加、髓腔扩张等结构改变。手术治疗的目的是实现稳定固定,减轻疼痛并允许早期活动。