Document Detail

No clinical difference between large metal-on-metal total hip arthroplasty and 28-mm-head total hip arthroplasty?
MedLine Citation:
PMID:  21373801     Owner:  NLM     Status:  MEDLINE    
PURPOSE: We aimed to test the claim of greater range of motion (ROM) with large femoral head metal-on-metal total hip arthroplasty.
METHODS: We compared 28-mm metal-on-polyethylene (MP) total hip arthroplasty with large femoral head metal-on-metal (MM) total hip arthroplasty in a randomised clinical trial. ROM one year postoperatively was determined in 50 patients. Mean head sizes were 28 mm (MP) and 48 mm (MM).
RESULTS: After one year, the large head MM group showed greater improvement in internal rotation (14 degrees) than the 28 mm group (seven degrees).There were no significant differences in the absolute values of postoperative internal rotation, external rotation, flexion, extension, abduction and abduction.
CONCLUSIONS: Absolute postoperative range of motion did not differ between the two groups. The improvement in internal rotation was greater after large femoral head metal-on-metal total hip arthroplasty. It is however questionable whether this difference is clinically relevant.
Wierd P Zijlstra; Inge van den Akker-Scheek; Mark J M Zee; Jos J A M van Raay
Publication Detail:
Type:  Comparative Study; Journal Article; Randomized Controlled Trial     Date:  2011-03-04
Journal Detail:
Title:  International orthopaedics     Volume:  35     ISSN:  1432-5195     ISO Abbreviation:  Int Orthop     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-11-28     Completed Date:  2012-03-20     Revised Date:  2013-06-30    
Medline Journal Info:
Nlm Unique ID:  7705431     Medline TA:  Int Orthop     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1771-6     Citation Subset:  IM    
Department of Orthopaedic Surgery, Martini Hospital, Groningen, The Netherlands.
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MeSH Terms
Arthritis / etiology,  surgery
Arthroplasty, Replacement, Hip / instrumentation,  methods*
Bone Malalignment
Femur Head
Femur Head Necrosis / surgery
Health Status
Hip Injuries / complications,  surgery
Hip Joint / physiopathology,  surgery*
Hip Prosthesis*
Middle Aged
Osteoarthritis, Hip / surgery
Outcome Assessment (Health Care)
Prosthesis Design*
Range of Motion, Articular
Recovery of Function
Treatment Outcome
Reg. No./Substance:
0/Metals; 9002-88-4/Polyethylene

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

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