The Effect of Range of Motion After Single-level Discover Cervical Artificial Disk Replacement

Chen, Yu; Wen, Yumei; Wu, Xiaodong; Chen, Huajiang; Wang, Xinwei; Yang, Lili; He, Hailong; Yang, Lei; Tsai, Nicholas; Peng, Yucheng; Gu, Shiyi; Sun, Qian

doi:10.1097/bsd.0b013e31828bc02f

Cited by 11 publications

(3 citation statements)

References 2 publications

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“…Most patients in this study cohort showed preserved or increased ROM at final follow-up. Chen et al reported not only an increase in ROM at the treated segment after CDA but also an increase in ROM in the adjacent segments [14].…”

Section: Discussionmentioning

confidence: 98%

Postoperative segmental hypermobility after cervical arthroplasty: A possible pathomechanism for outcome failure

Gautschi

Corniola

Stienen

et al. 2015

Journal of Clinical Neuroscience

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Section: Discussionmentioning

confidence: 98%

Postoperative segmental hypermobility after cervical arthroplasty: A possible pathomechanism for outcome failure

Gautschi

Corniola

Stienen

et al. 2015

Journal of Clinical Neuroscience

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“…The design of the most commonly used TCDA implies large kinematic differences among the different implants. Although all of these devices globally preserve segmental motion at the cervical spine, each prosthesis design has different restriction patterns [9][10][11][12][13][14]. This particularity might have an influence on the clinical outcomes of the different devices.…”

Section: Introductionmentioning

confidence: 95%

Polyurethane on titanium unconstrained disc arthroplasty versus anterior discectomy and fusion for the treatment of cervical disc disease: a review of level I–II randomized clinical trials including clinical outcomes

Aragonés

Hevia²,

Barrios

2015

Eur Spine J

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“…Previous studies of in vivo motion assessment after cervical disc arthroplasty have been limited to measuring the range of motion from static lateral radiographs taken at the extremes of full flexion and extension ( 1 - 3 ). Range of motion is important, but it fails to characterise the mid-range motion where the majority of daily living activities take place.…”

Section: Introductionmentioning

confidence: 99%

Assessing in vivo flexion-extension quality of motion after cervical disc arthroplasty: a pilot study

Tan¹,

Patwardhan²,

Thani³

2023

J Spine Surg

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Background The quality of flexion-extension motion after cervical disc arthroplasty has been a subject of interest due to the number of available devices with different designs and kinematics. Previous studies of motion quality have been limited to measuring the range of motion using two radiographs taken at the extremes of flexion and extension. This is the first study evaluating the in vivo quality of index segment motion using fluoroscopic images collected over the arc of flexion-extension after M6-C cervical disc arthroplasty surgery. Methods Eligible participants had previously undergone a single-level cervical disc arthroplasty surgery for degenerative cervical spine disease performed by the senior author. Study participants underwent dynamic lateral fluoroscopic imaging to capture the C2-C7 motion between maximal flexion and extension. The amount of motion contribution by individual segments to the C2-C7 motion (termed segmental motion fraction) and its variation throughout the arc of flexion-extension were compared between the index and adjacent segments. The shift of centre of rotation during the arc of motion was also assessed. Results Ten subjects with a mean age of 43.8 years old were recruited, with an average follow-up of 16.2 months at the time of fluoroscopy. The C2-C7 cervical spine had an average flexion-extension range of 66.7 degrees. The contribution of the index segment averaged over the flexion-extension arc of motion was 18.9% (peak contribution 24.4%) for the C5-C6 group; and 15.5% (peak contribution 25.5%) for the C6-C7 group. The mean cranial-caudal location of the centre of rotation progressively shifted in the cranial direction from C2-C3 to C6-C7 motion segment. Conclusions Our results demonstrated physiologic quality of motion at the index segment and harmony among its neighbouring segments following cervical disc arthroplasty, without gearshift-like intermittent locking of the prosthesis during the arc of flexion-extension motion. This pilot study provides a basis for the design of future long-term studies with larger sample size to compare the quality of motion between different cervical disc prostheses using the concept of segmental motion fraction as a motion-quality metric.

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The Effect of Range of Motion After Single-level Discover Cervical Artificial Disk Replacement

Cited by 11 publications

References 2 publications

Postoperative segmental hypermobility after cervical arthroplasty: A possible pathomechanism for outcome failure

Postoperative segmental hypermobility after cervical arthroplasty: A possible pathomechanism for outcome failure

Polyurethane on titanium unconstrained disc arthroplasty versus anterior discectomy and fusion for the treatment of cervical disc disease: a review of level I–II randomized clinical trials including clinical outcomes

Assessing in vivo flexion-extension quality of motion after cervical disc arthroplasty: a pilot study

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