This rhomboid shaped crystal of calcium pyrophosphate , which appears bluish - white ( weak positive birefringence ) by polarized light with red plate 焦磷酸钙菱形结晶在红感光板偏振光下呈蓝白色(弱正双折射) 。
Calcium pyrophosphage crystal deposition disease ( sometimes called " pseudogout " ) is not uncommon in persons over the age of 50 , and can lead to acute , subacute , or chronic arthritis of knees , wrists , elbows , shoulders , and ankles 焦磷酸钙结晶沉积病(有时称为“假性痛风” )在50岁以上人群中并不少见,它能引起膝关节、腕关节、肘关节、肩关节与踝关节的急性、亚急性或慢性关节炎。
Macrophages or osteoclasts can heighten the consistence of hydrogen ions in part circumstance contacted with material or interior cells by chemical reaction , which can accelerate the degradation of the material . secondly , calcium ion and hydrogen ion were the prerequisite raw material of bone formation . and bounds of calcium ions and hydrogen ions produced by the degradation of material provide the activity of osteoblastics affluent material basis , which accelerated the formation of new bone 实验结果证明植入材料是以磷酸三钙( - tcp )为主晶相,同时含有焦磷酸钙、羟基磷灰石、无定形磷酸钙晶相和非晶相,其化学组成与骨骼的无机矿物相组成相近,而且具有与骨骼相似的多孔网状结构。