Document Detail

Clinical, radiographic, and kinematic results from an adjustable four-pad halovest.
MedLine Citation:
PMID:  9201856     Owner:  NLM     Status:  MEDLINE    
STUDY DESIGN: Charts and radiographs of all patients treated with this halovest at one university hospital were reviewed retrospectively. OBJECTIVES: To describe the outcomes from an adjustable four-pad halovest and to compare them with those from standard halovests, as previously published. SUMMARY OF BACKGROUND DATA: With standard halovests, there can be cervical motion up to 70% of normal values, substantial loads between the halo and vest, and complications of pin loosening, pin infections, and scapular pressure sores. The four-pad vest reduces halovest loads and vest-torso motions. METHODS: The four-pad vest has four independently adjustable pads that completely avoid contact with the scapula, clavicle, and abdomen. Clinical records were analyzed to determine the incidences of halo pin loosening, pressure sores, injury or surgical site nonunion, and loss of cervical alignment. Lateral radiographs were taken with the patient in the upright and supine positions at various times to determine intervertebral rotations (flexion-extension). RESULTS: The clinical results with the four-pad vest were at least as good as those for standard vests. Scapular pressure sores were prevented completely by the absence of vest-scapula contact. Kyphosis did not increase significantly with time. The mean segmental rotations were all 3 degrees or less and showed a smoothly decreasing pattern from C1-C2 to C6-C7. The value at Oc-C1 was opposite to that at C1-C2 and is the subject of further analysis. CONCLUSIONS: The rotations occurring with the four-pad vest are less than or equal to those occurring with standard vests, for overall cervical rotation and for individual motion segment rotations. This is consistent with the smaller halovest forces seen with this vest. Prospective, comparative testing will assess the clinical significance of these findings.
T Tomonaga; M H Krag; J E Novotny
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Spine     Volume:  22     ISSN:  0362-2436     ISO Abbreviation:  Spine     Publication Date:  1997 Jun 
Date Detail:
Created Date:  1997-08-08     Completed Date:  1997-08-08     Revised Date:  2009-07-09    
Medline Journal Info:
Nlm Unique ID:  7610646     Medline TA:  Spine (Phila Pa 1976)     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1199-208     Citation Subset:  IM    
Department of Orthopaedic Surgery, Nagasaki University School of Medicine, Japan.
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MeSH Terms
Cervical Vertebrae / injuries*,  radiography,  surgery
Equipment Design
Range of Motion, Articular
Retrospective Studies
Spinal Fractures / surgery,  therapy*

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