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Clinical and radiological outcomes of dynamic cervical implant arthroplasty:A 5-year follow-up

World Journal of Clinical Cases 2021年第16期9卷 3869-3879页

作者： Li Zou Xin Rong Xi-Jiao Liu Hao Liu Department of Pediatric Surgery West China Hospital of Sichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Orthopedics West China Hospital of Sichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Radiology West China Hospital of Sichuan UniversityChengdu 610041Sichuan ProvinceChina

BACKGROUND Dynamic cervical implant(DCI)stabilization has been reported to have satisfactory clinical and radiological results with short-and mid-term follow-up in the treatment of cervical degenerative disc ***,few reports about the clinical and radiological outcome with more than 5-year follow-up *** To investigate the long-term clinical and radiological results of DCI *** A total of 40 patients who received DCI arthroplasty were consecutively reviewed from May 2010 to August *** analogue scale(VAS),neck disability index(NDI)score,Japanese Orthopaedic Association(JOA)score,and SF-36 items were used to assess neural function *** and dynamic radiographs and 3-dimentional computed tomography were used to evaluate the radiological *** The scores of neck/arm VAS,NDI,JOA,and 8-dimensions of SF-36 were significantly improved at the 1-mo follow-up(P0.05),except the ROM of FSU lateral bending(P0.05).At the last follow-up,12(26.1%)segments developed heterotopic *** DCI arthroplasty is a safe and effective non-fusion technique to treat cervical degenerative disc disease in long-term follow-up.

关键词： Dynamic cervical implant cervical arthroplasty cervical disc degeneration Clinical outcomes Radiological outcomes Range of motion

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Application of cervical arthroplasty with Bryan cervical disc： long-term X-ray and magnetic resonance imaging follow-up results

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Chinese Medical Journal 2010年第21期123卷 2999-3002页

作者： ZHAO Yan-bin SUN Yu CHEN Zhong-qiang LIU Zhong-jun Department of Orthopedic Surgery Peking University Third Hospital Beijing 100191 China

Background cervical disc arthroplasty is a new technique for treating degenerative cervical disease. Its goal is to avoid the degeneration of adjacent levels by preserving motion at the treated level. The aims of this study were to evaluate the radiologic outcomes of Bryan cervical disc replacement and the degenerative status of adjacent *** Twenty-two patients at a single center underwent discectomy and implantation of Bryan cervical disc. The mean follow-up period was 60 months （57-69 months）. Twenty patients underwent single-level arthroplasty and two underwent arthroplasty at two levels. The levels of surgery included C3/4 （3 levels）, C4/5 （2 levels）, C5/6 （18 levels） and C6/7 （1 level）. Radiographic evaluation included dynamic X-ray examination and magnetic resonance imaging （MRI） at baseline and at final *** On X-ray examination, the range of motion （ROM） at the operated level was 7.2° （2.5°-13.0°） at baseline and 7.8° （1.0°-15.0°） at final follow-up （P 〉0.05）. Heterotopic ossification around the prosthesis was observed in eight levels,and two levels showed loss of motion （ROM 〈2°）. MRI showed worsening by a grade at the upper level in 2/22 patients,and worsening by a grade at the lower level in 3/22, according to Miyazaki＇s classification. No further impingement of the ligamentum flavum into the spinal canal was observed at adjacent levels, though the disc bulge was slightly increased at both the adjacent upper and lower levels at final *** Arthroplasty using Bryan cervical disc prosthesis resulted in favorable radiologic outcomes in this *** degeneration at adjacent levels may be postponed by this technique.

关键词： Bryan cervical disc prosthesis cervical disc arthroplasty cervical disc degeneration

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