Sagittal alignment after Bryan cervical arthroplasty
Prospective, randomized, Food and Drug Administration Investigational Device Exemption trial from one study site. Examine the radiographic sagittal alignment of the Bryan cervical disc for one-level disease. Prospective, randomized studies demonstrate Bryan arthroplasty provides statistically better...
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| Veröffentlicht in: | Spine (Philadelphia, Pa. 1976) Pa. 1976), 2011-06, Vol.36 (13), p.991-996 |
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| creator | Sasso, Rick C Metcalf, Newton H Hipp, John A Wharton, Nicholas D Anderson, Paul A |
| description | Prospective, randomized, Food and Drug Administration Investigational Device Exemption trial from one study site.
Examine the radiographic sagittal alignment of the Bryan cervical disc for one-level disease.
Prospective, randomized studies demonstrate Bryan arthroplasty provides statistically better functional outcomes than anterior cervical discectomy and fusion. Uncontrolled case reports describe kyphosis after disc replacement. No prospective study has critically assessed sagittal alignment after cervical arthroplasty.
Forty-eight patients reviewed with a minimum follow-up of 2 years. Quantitative motion analysis determined the change in overall (C2-C7) and treatment-level sagittal alignment, disc space heights, and range of motion.
Preoperatively, overall sagittal alignment was equivalent in the two groups. At 24-month follow-up, overall lordosis for the cohorts was not statistically different from preoperative values for each group. In addition, overall lordosis was not significantly different at 24 months when comparing Bryan patients with the fusion patients. The average change in disc angle from preoperative to immediate postoperative at the treated level in the Bryan disc group was a nonsignificant increase in lordosis of 0.92°. The anterior disc height was the same at all time points, but the posterior disc height was slightly (0.7 mm) more in the Bryan than in the fusion patients (P = 0.04). The angular range of motion in the Bryan group was statistically equivalent at all time points. At the fused levels, average range of motion decreased from 6.4° to 0.9° at 24 months (P < 0.0001).
With the Bryan disc, there was an insignificant increase in lordosis of 0.9° at immediate postoperative time point. Overall cervical sagittal alignment is not different between the experimental and control populations. This prospective study does not demonstrate a clinically significant increase in segmental kyphosis after Bryan disc arthroplasty. Global cervical lordosis is statistically equivalent between arthroplasty and fusion groups at 2 years follow-up. |
| doi_str_mv | 10.1097/BRS.0b013e3182076d70 |
| format | Article |
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Examine the radiographic sagittal alignment of the Bryan cervical disc for one-level disease.
Prospective, randomized studies demonstrate Bryan arthroplasty provides statistically better functional outcomes than anterior cervical discectomy and fusion. Uncontrolled case reports describe kyphosis after disc replacement. No prospective study has critically assessed sagittal alignment after cervical arthroplasty.
Forty-eight patients reviewed with a minimum follow-up of 2 years. Quantitative motion analysis determined the change in overall (C2-C7) and treatment-level sagittal alignment, disc space heights, and range of motion.
Preoperatively, overall sagittal alignment was equivalent in the two groups. At 24-month follow-up, overall lordosis for the cohorts was not statistically different from preoperative values for each group. In addition, overall lordosis was not significantly different at 24 months when comparing Bryan patients with the fusion patients. The average change in disc angle from preoperative to immediate postoperative at the treated level in the Bryan disc group was a nonsignificant increase in lordosis of 0.92°. The anterior disc height was the same at all time points, but the posterior disc height was slightly (0.7 mm) more in the Bryan than in the fusion patients (P = 0.04). The angular range of motion in the Bryan group was statistically equivalent at all time points. At the fused levels, average range of motion decreased from 6.4° to 0.9° at 24 months (P < 0.0001).
With the Bryan disc, there was an insignificant increase in lordosis of 0.9° at immediate postoperative time point. Overall cervical sagittal alignment is not different between the experimental and control populations. This prospective study does not demonstrate a clinically significant increase in segmental kyphosis after Bryan disc arthroplasty. Global cervical lordosis is statistically equivalent between arthroplasty and fusion groups at 2 years follow-up.</description><identifier>EISSN: 1528-1159</identifier><identifier>DOI: 10.1097/BRS.0b013e3182076d70</identifier><identifier>PMID: 21358477</identifier><language>eng</language><publisher>United States</publisher><subject>Arthroplasty - adverse effects ; Arthroplasty - instrumentation ; Biomechanical Phenomena ; Bone Transplantation ; Cervical Vertebrae - diagnostic imaging ; Cervical Vertebrae - physiopathology ; Cervical Vertebrae - surgery ; Disability Evaluation ; Diskectomy - adverse effects ; Humans ; Intervertebral Disc - diagnostic imaging ; Intervertebral Disc - physiopathology ; Intervertebral Disc - surgery ; Intervertebral Disc Degeneration - diagnostic imaging ; Intervertebral Disc Degeneration - physiopathology ; Intervertebral Disc Degeneration - surgery ; Intervertebral Disc Displacement - diagnostic imaging ; Intervertebral Disc Displacement - physiopathology ; Intervertebral Disc Displacement - surgery ; Kyphosis - etiology ; Lordosis - etiology ; Prospective Studies ; Prosthesis Design ; Radiography ; Range of Motion, Articular ; Recovery of Function ; Spinal Fusion - adverse effects ; Time Factors ; Treatment Outcome ; United States</subject><ispartof>Spine (Philadelphia, Pa. 1976), 2011-06, Vol.36 (13), p.991-996</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27903,27904</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/21358477$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Sasso, Rick C</creatorcontrib><creatorcontrib>Metcalf, Newton H</creatorcontrib><creatorcontrib>Hipp, John A</creatorcontrib><creatorcontrib>Wharton, Nicholas D</creatorcontrib><creatorcontrib>Anderson, Paul A</creatorcontrib><title>Sagittal alignment after Bryan cervical arthroplasty</title><title>Spine (Philadelphia, Pa. 1976)</title><addtitle>Spine (Phila Pa 1976)</addtitle><description>Prospective, randomized, Food and Drug Administration Investigational Device Exemption trial from one study site.
Examine the radiographic sagittal alignment of the Bryan cervical disc for one-level disease.
Prospective, randomized studies demonstrate Bryan arthroplasty provides statistically better functional outcomes than anterior cervical discectomy and fusion. Uncontrolled case reports describe kyphosis after disc replacement. No prospective study has critically assessed sagittal alignment after cervical arthroplasty.
Forty-eight patients reviewed with a minimum follow-up of 2 years. Quantitative motion analysis determined the change in overall (C2-C7) and treatment-level sagittal alignment, disc space heights, and range of motion.
Preoperatively, overall sagittal alignment was equivalent in the two groups. At 24-month follow-up, overall lordosis for the cohorts was not statistically different from preoperative values for each group. In addition, overall lordosis was not significantly different at 24 months when comparing Bryan patients with the fusion patients. The average change in disc angle from preoperative to immediate postoperative at the treated level in the Bryan disc group was a nonsignificant increase in lordosis of 0.92°. The anterior disc height was the same at all time points, but the posterior disc height was slightly (0.7 mm) more in the Bryan than in the fusion patients (P = 0.04). The angular range of motion in the Bryan group was statistically equivalent at all time points. At the fused levels, average range of motion decreased from 6.4° to 0.9° at 24 months (P < 0.0001).
With the Bryan disc, there was an insignificant increase in lordosis of 0.9° at immediate postoperative time point. Overall cervical sagittal alignment is not different between the experimental and control populations. This prospective study does not demonstrate a clinically significant increase in segmental kyphosis after Bryan disc arthroplasty. Global cervical lordosis is statistically equivalent between arthroplasty and fusion groups at 2 years follow-up.</description><subject>Arthroplasty - adverse effects</subject><subject>Arthroplasty - instrumentation</subject><subject>Biomechanical Phenomena</subject><subject>Bone Transplantation</subject><subject>Cervical Vertebrae - diagnostic imaging</subject><subject>Cervical Vertebrae - physiopathology</subject><subject>Cervical Vertebrae - surgery</subject><subject>Disability Evaluation</subject><subject>Diskectomy - adverse effects</subject><subject>Humans</subject><subject>Intervertebral Disc - diagnostic imaging</subject><subject>Intervertebral Disc - physiopathology</subject><subject>Intervertebral Disc - surgery</subject><subject>Intervertebral Disc Degeneration - diagnostic imaging</subject><subject>Intervertebral Disc Degeneration - physiopathology</subject><subject>Intervertebral Disc Degeneration - surgery</subject><subject>Intervertebral Disc Displacement - diagnostic imaging</subject><subject>Intervertebral Disc Displacement - physiopathology</subject><subject>Intervertebral Disc Displacement - surgery</subject><subject>Kyphosis - etiology</subject><subject>Lordosis - etiology</subject><subject>Prospective Studies</subject><subject>Prosthesis Design</subject><subject>Radiography</subject><subject>Range of Motion, Articular</subject><subject>Recovery of Function</subject><subject>Spinal Fusion - adverse effects</subject><subject>Time Factors</subject><subject>Treatment Outcome</subject><subject>United States</subject><issn>1528-1159</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo1j11LwzAYhYMgbk7_gUjvvOp80zRNeumGXzAQnF6Xt8mbWWm7mmRC_70V59XhcB4OPIxdcVhyKNXt6nW7hBq4IMF1BqqwCk7YnMtMp5zLcsbOQ_gEgELw8ozNMi6kzpWas3yLuyZGbBNsm13fUR8TdJF8svIj9okh_92Y39nHD78fWgxxvGCnDttAl8dcsPeH-7f1U7p5eXxe323SIeMQ0wJzbWSRuxq0EtrVpVNKToU0WYtEBokTOleo2jnrsDalEeVkYaVwFsSC3fz9Dn7_daAQq64JhtoWe9ofQqULDZlUKp_I6yN5qDuy1eCbDv1Y_YuKH9WrVnA</recordid><startdate>201106</startdate><enddate>201106</enddate><creator>Sasso, Rick C</creator><creator>Metcalf, Newton H</creator><creator>Hipp, John A</creator><creator>Wharton, Nicholas D</creator><creator>Anderson, Paul A</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7X8</scope></search><sort><creationdate>201106</creationdate><title>Sagittal alignment after Bryan cervical arthroplasty</title><author>Sasso, Rick C ; Metcalf, Newton H ; Hipp, John A ; Wharton, Nicholas D ; Anderson, Paul A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p210t-6a48c564fb08738fb9f775b08e8eddaeecae1eaff67bffdfabc9c3913ed53fd03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Arthroplasty - adverse effects</topic><topic>Arthroplasty - instrumentation</topic><topic>Biomechanical Phenomena</topic><topic>Bone Transplantation</topic><topic>Cervical Vertebrae - diagnostic imaging</topic><topic>Cervical Vertebrae - physiopathology</topic><topic>Cervical Vertebrae - surgery</topic><topic>Disability Evaluation</topic><topic>Diskectomy - adverse effects</topic><topic>Humans</topic><topic>Intervertebral Disc - diagnostic imaging</topic><topic>Intervertebral Disc - physiopathology</topic><topic>Intervertebral Disc - surgery</topic><topic>Intervertebral Disc Degeneration - diagnostic imaging</topic><topic>Intervertebral Disc Degeneration - physiopathology</topic><topic>Intervertebral Disc Degeneration - surgery</topic><topic>Intervertebral Disc Displacement - diagnostic imaging</topic><topic>Intervertebral Disc Displacement - physiopathology</topic><topic>Intervertebral Disc Displacement - surgery</topic><topic>Kyphosis - etiology</topic><topic>Lordosis - etiology</topic><topic>Prospective Studies</topic><topic>Prosthesis Design</topic><topic>Radiography</topic><topic>Range of Motion, Articular</topic><topic>Recovery of Function</topic><topic>Spinal Fusion - adverse effects</topic><topic>Time Factors</topic><topic>Treatment Outcome</topic><topic>United States</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sasso, Rick C</creatorcontrib><creatorcontrib>Metcalf, Newton H</creatorcontrib><creatorcontrib>Hipp, John A</creatorcontrib><creatorcontrib>Wharton, Nicholas D</creatorcontrib><creatorcontrib>Anderson, Paul A</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>MEDLINE - Academic</collection><jtitle>Spine (Philadelphia, Pa. 1976)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sasso, Rick C</au><au>Metcalf, Newton H</au><au>Hipp, John A</au><au>Wharton, Nicholas D</au><au>Anderson, Paul A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Sagittal alignment after Bryan cervical arthroplasty</atitle><jtitle>Spine (Philadelphia, Pa. 1976)</jtitle><addtitle>Spine (Phila Pa 1976)</addtitle><date>2011-06</date><risdate>2011</risdate><volume>36</volume><issue>13</issue><spage>991</spage><epage>996</epage><pages>991-996</pages><eissn>1528-1159</eissn><abstract>Prospective, randomized, Food and Drug Administration Investigational Device Exemption trial from one study site.
Examine the radiographic sagittal alignment of the Bryan cervical disc for one-level disease.
Prospective, randomized studies demonstrate Bryan arthroplasty provides statistically better functional outcomes than anterior cervical discectomy and fusion. Uncontrolled case reports describe kyphosis after disc replacement. No prospective study has critically assessed sagittal alignment after cervical arthroplasty.
Forty-eight patients reviewed with a minimum follow-up of 2 years. Quantitative motion analysis determined the change in overall (C2-C7) and treatment-level sagittal alignment, disc space heights, and range of motion.
Preoperatively, overall sagittal alignment was equivalent in the two groups. At 24-month follow-up, overall lordosis for the cohorts was not statistically different from preoperative values for each group. In addition, overall lordosis was not significantly different at 24 months when comparing Bryan patients with the fusion patients. The average change in disc angle from preoperative to immediate postoperative at the treated level in the Bryan disc group was a nonsignificant increase in lordosis of 0.92°. The anterior disc height was the same at all time points, but the posterior disc height was slightly (0.7 mm) more in the Bryan than in the fusion patients (P = 0.04). The angular range of motion in the Bryan group was statistically equivalent at all time points. At the fused levels, average range of motion decreased from 6.4° to 0.9° at 24 months (P < 0.0001).
With the Bryan disc, there was an insignificant increase in lordosis of 0.9° at immediate postoperative time point. Overall cervical sagittal alignment is not different between the experimental and control populations. This prospective study does not demonstrate a clinically significant increase in segmental kyphosis after Bryan disc arthroplasty. Global cervical lordosis is statistically equivalent between arthroplasty and fusion groups at 2 years follow-up.</abstract><cop>United States</cop><pmid>21358477</pmid><doi>10.1097/BRS.0b013e3182076d70</doi><tpages>6</tpages></addata></record> |
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| ispartof | Spine (Philadelphia, Pa. 1976), 2011-06, Vol.36 (13), p.991-996 |
| issn | 1528-1159 |
| language | eng |
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| source | MEDLINE; Journals@Ovid Complete |
| subjects | Arthroplasty - adverse effects Arthroplasty - instrumentation Biomechanical Phenomena Bone Transplantation Cervical Vertebrae - diagnostic imaging Cervical Vertebrae - physiopathology Cervical Vertebrae - surgery Disability Evaluation Diskectomy - adverse effects Humans Intervertebral Disc - diagnostic imaging Intervertebral Disc - physiopathology Intervertebral Disc - surgery Intervertebral Disc Degeneration - diagnostic imaging Intervertebral Disc Degeneration - physiopathology Intervertebral Disc Degeneration - surgery Intervertebral Disc Displacement - diagnostic imaging Intervertebral Disc Displacement - physiopathology Intervertebral Disc Displacement - surgery Kyphosis - etiology Lordosis - etiology Prospective Studies Prosthesis Design Radiography Range of Motion, Articular Recovery of Function Spinal Fusion - adverse effects Time Factors Treatment Outcome United States |
| title | Sagittal alignment after Bryan cervical arthroplasty |
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