Yanbin Zhao1, Feifei Zhou1, Yu Sun2, Shengfa Pan1. 1. Department of Orthopaedic Surgery, Peking University Third Hospital, North Garden Road No. 49, Haidian District, Beijing, 100191, China. 2. Department of Orthopaedic Surgery, Peking University Third Hospital, North Garden Road No. 49, Haidian District, Beijing, 100191, China. sunyuor@vip.sina.com.
Abstract
PURPOSE: The aim of this study was to evaluate the long-term clinical and radiographic outcomes of cervical arthroplasty using the ProDisc-C prosthesis. METHODS: Clinical and radiographic evaluations, including dynamic flexion-extension lateral images, were performed at baseline and at 10-year follow-up. RESULTS: Twenty-seven patients who had single-level ProDisc-C arthroplasty were followed up for a mean period of 123 months. The range of motion at the operated level was 8.9° ± 3.9° at baseline and 6.6° ± 3.5° at final follow-up. Twenty of 27 levels (74%) developed heterotopic ossification. According to McAfee's classification, one level was classified as grade I, four levels were classified as grade II, 12 levels were classified as grade III and three levels were classified as grade IV. Three patients developed recurrent cervical radiculopathy or myelopathy due to adjacent segment disease and received the reoperations. The reoperations included two cases of cervical arthroplasty at adjacent segments and one case of cervical laminoplasty. CONCLUSIONS: ProDisc-C arthroplasty had acceptable clinical and radiographic results at 10-year follow-up. Heterotopic ossification was common after ProDisc-C arthroplasty, which decreased the range of motion. These slides can be retrieved under Electronic Supplementary Material.
PURPOSE: The aim of this study was to evaluate the long-term clinical and radiographic outcomes of cervical arthroplasty using the ProDisc-C prosthesis. METHODS: Clinical and radiographic evaluations, including dynamic flexion-extension lateral images, were performed at baseline and at 10-year follow-up. RESULTS: Twenty-seven patients who had single-level ProDisc-C arthroplasty were followed up for a mean period of 123 months. The range of motion at the operated level was 8.9° ± 3.9° at baseline and 6.6° ± 3.5° at final follow-up. Twenty of 27 levels (74%) developed heterotopic ossification. According to McAfee's classification, one level was classified as grade I, four levels were classified as grade II, 12 levels were classified as grade III and three levels were classified as grade IV. Three patients developed recurrent cervical radiculopathy or myelopathy due to adjacent segment disease and received the reoperations. The reoperations included two cases of cervical arthroplasty at adjacent segments and one case of cervical laminoplasty. CONCLUSIONS: ProDisc-C arthroplasty had acceptable clinical and radiographic results at 10-year follow-up. Heterotopic ossification was common after ProDisc-C arthroplasty, which decreased the range of motion. These slides can be retrieved under Electronic Supplementary Material.
Authors: Thomas P Loumeau; Bruce V Darden; Thomas J Kesman; Susan M Odum; Bryce A Van Doren; Eric B Laxer; Daniel B Murrey Journal: Eur Spine J Date: 2016-02-11 Impact factor: 3.134
Authors: Daniel Murrey; Michael Janssen; Rick Delamarter; Jeffrey Goldstein; Jack Zigler; Bobby Tay; Bruce Darden Journal: Spine J Date: 2008-09-06 Impact factor: 4.166
Authors: Christoph Mehren; Franziska Heider; Christoph J Siepe; Bernhard Zillner; Ralph Kothe; Andreas Korge; H Michael Mayer Journal: Eur Spine J Date: 2017-07-04 Impact factor: 3.134
Authors: Michael E Janssen; Jack E Zigler; Jeffrey M Spivak; Rick B Delamarter; Bruce V Darden; Branko Kopjar Journal: J Bone Joint Surg Am Date: 2015-11-04 Impact factor: 5.284