Assay and counter measure for the complications of the prosthetic disc nucleus-pulposus(PDN)replacement
- VernacularTitle:腰椎间盘人工髓核置换术并发症原因分析及预防策略(附4年随访报告)
- Author:
Liang ZHAO
;
Dongbin QU
;
Jianting CHEN
- Publication Type:Journal Article
- Keywords:
lumbar spine;
artificial nucleus;
complication
- From:
Orthopedic Journal of China
2006;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
[Objective]To analyze the reasons and counter treatment of complication after prosthetic disc nucleus implantation.[Method]From Feb 2002 to Aug 2004,80 patients of lumbar disc herniation were implanted with one single PDN device at our centre.65 patients of them came to the clinical,functional,and radiographic follow-up examinations,magnetic resonance images and follow-up records of all patients were reviewed carefully.They were divided into three groups.Group A:30 cases had at least 24 months follow-up data.Group B:23 cases had at least 36 months follow-up data.Group C:12 cases had at least 48 months follow-up data.[Result]After implantation,device migrations were noticed in 3 patients.24 cases experienced low back pain.In 24~48 month follow-up,the MR images of 39 patients had shown the abnormal signal pattern of the endplate where PDN-solo was implanted,even 32 of them had been found subsidence.In Group A,the height of intervertebral disc at the 24 month follow-up was decreased 4%.In Group B,at 36 month follow-up,it was decreased 12%.In Group C,at 48 month follow-up,it was decreased 18%.[Conclusion]After follow-up,the clinical effect of PDN is preferred.However,the complications of device dislocation,device subsidence remain problems that must be highlighted.This study suggested that the complications of PDN are serious.Therefore,the proper selecting patients for PDN replacement are crucial for good results.The indications for PDN must be restricted.
