Document Detail

Early range of motion of the scorpio non-restrictive geometry cruciate-retaining total knee system.
MedLine Citation:
PMID:  21036012     Owner:  NLM     Status:  In-Data-Review    
Flexion following total knee arthroplasty in the US population generally falls between 100° and 120°. Because of these relatively low flexion arcs, total knee arthroplasty prosthetic designs emerged allowing "high flexion" (≥125°). We hypothesized that a high-flexion implant design, Scorpio Non-Restrictive Geometry cruciate-retaining knee prosthesis, would allow clinical early maximum flexion of at least 125°. A prospective observational cohort study enrolled 87 unselected patients (94 knees) evaluated preoperation and 3 months and 1 year postoperation for clinical flexion, arc of motion, and Knee Society scores. At 1 year, 67% of knees had improved flexion and 23% achieved flexion of at least 125°. Clinically, flexion improved by 6.9° and total arc of motion improved by 10.6° from preoperation to 1-year postoperation. Although this high-flexion design allows increased flexion, many patients fail to achieve flexion of at least 125°.
Clifford W Colwell; Jonathan D Gelber; Pamela A Pulido; Kevin M Casey
Publication Detail:
Type:  Journal Article     Date:  2010-10-29
Journal Detail:
Title:  The Journal of arthroplasty     Volume:  26     ISSN:  1532-8406     ISO Abbreviation:  J Arthroplasty     Publication Date:  2011 Aug 
Date Detail:
Created Date:  2011-07-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8703515     Medline TA:  J Arthroplasty     Country:  United States    
Other Details:
Languages:  eng     Pagination:  751-5     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Elsevier Inc. All rights reserved.
Shiley Center for Orthopaedic Research and Education (SCORE) at Scripps Clinic, La Jolla, California.
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