Standing Versus Supine Radiographs to Evaluate Femoral Head Penetration in the Polyethylene Liner After Total Hip Arthroplasty

Abstract The linear penetration rates for ceramic femoral heads on conventional and highly cross-linked polyethylene were measured and compared with radiographs taken in the standing and supine position taken three weeks postoperatively and at final follow-up. Seventy-five patients (83 hips) with co...

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Bibliographic Details
Published in:The Journal of arthroplasty 2014-12, Vol.29 (12), p.2415-2419
Main Authors: Maruyama, Masaaki, MD, PhD, Tensho, Keiji, MD, Wakabayashi, Shinji, MD, PhD, Hisa, Kenji, MD
Format: Article
Language:English
Subjects:
Adult
Aged
Aged, 80 and over
Arthroplasty, Replacement, Hip - instrumentation
Biocompatible Materials
Biomedical materials
Ceramics
Cross-linked polyethylene
Female
femoral head penetration
Femur Head - diagnostic imaging
Femur Head - surgery
Hip Prosthesis
Hips
Humans
Male
Middle Aged
Orthopedics
Penetration
Polyethylene
polyethylene liner wear
Polyethylenes
Posture
Prosthesis Failure
Radiographs
Radiography
standing radiograph
Supine position
Surgical implants
total hip arthroplasty
Young Adult
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Summary:Abstract The linear penetration rates for ceramic femoral heads on conventional and highly cross-linked polyethylene were measured and compared with radiographs taken in the standing and supine position taken three weeks postoperatively and at final follow-up. Seventy-five patients (83 hips) with conventional polyethylene (group-1) and two hundred and seventy five patients (300 hips) with highly cross-linked polyethylene (group-2) were studied. Follow-up periods were 14.5 years in group-1 and 8.6 years in group-2. The average penetration rates in group-1 were 0.17 mm/year in supine position and 0.18 mm/year in standing position ( P < 0.05). On the other hand, the rates in group-2 were 0.03 mm/year and 0.04 mm/year respectively ( P < 0.05). Although there were statistical differences between groups, 0.01 mm differences are probably not clinically relevant.
ISSN:0883-5403
1532-8406
DOI:10.1016/j.arth.2014.02.010