Document Detail

The influence of a suction device on fixation of a cemented cup using RSA.
MedLine Citation:
PMID:  18998193     Owner:  NLM     Status:  MEDLINE    
The quality of technique used at the time of socket cementation is crucial in ensuring a durable long-term result of the implant. We asked whether a new instrument, an aspirator retractor introduced into the wing of the ilium before socket preparation and cementation, would enhance cement fixation as defined by RSA and radiographic examination. We randomized 38 patients into two groups. The surgical technique was identical between the groups with the exception of the use of the aspirator retractor. Patients were followed clinically and with radiostereometry at a minimum of 2 years. We compared gross radiographic appearances, including the depth of penetration of cement and the incidence of postoperative and 2-year radiolucent lines. There was no difference in proximal migration between the two groups. No improvement of fixation was proven from the measured translations and rotations of the socket in the suction group. We found no difference in the number or extent of radiolucent lines or the depth of cement penetration when the iliac suction device was used in conjunction with contemporary cementing techniques. Although the data suggest no short-term advantage in this small study, we will continue to follow these patients presuming there will be improved outcomes in the longer term and since the device provides an easier method of obtaining adequate fixation, especially if technical difficulties are encountered during the pressurization procedure.
A John Timperley; Sarah L Whitehouse; Patrick G Hourigan
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Publication Detail:
Type:  Journal Article; Randomized Controlled Trial     Date:  2008-11-08
Journal Detail:
Title:  Clinical orthopaedics and related research     Volume:  467     ISSN:  1528-1132     ISO Abbreviation:  Clin. Orthop. Relat. Res.     Publication Date:  2009 Mar 
Date Detail:
Created Date:  2009-02-04     Completed Date:  2009-02-19     Revised Date:  2010-09-22    
Medline Journal Info:
Nlm Unique ID:  0075674     Medline TA:  Clin Orthop Relat Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  792-8     Citation Subset:  AIM; IM    
Princess Elizabeth Orthopaedic Centre, Royal Devon & Exeter Hospital, Barrack Road, Exeter, Devon, EX2 5DW, UK.
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MeSH Terms
Arthroplasty, Replacement, Knee / adverse effects,  instrumentation*
Bone Cements / therapeutic use*
Equipment Design
Hip Joint / physiopathology,  radiography*,  surgery*
Ilium / physiopathology,  radiography*,  surgery*
Middle Aged
Osteoarthritis, Hip / complications,  radiography*,  surgery*
Pain Measurement
Pain, Postoperative / etiology,  prevention & control
Radiographic Image Interpretation, Computer-Assisted
Range of Motion, Articular
Recovery of Function
Suction / instrumentation
Time Factors
Treatment Outcome
Reg. No./Substance:
0/Bone Cements

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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