Continuous distal migration and internal rotation of the C-stem prosthesis without any adverse clinical effects: an RSA study of 33 primary total hip arthroplasties followed for up to ten years.
In 2005, we demonstrated that the polished triple-tapered C-stem at two years had migrated distally and rotated internally. From that series, 33 patients have now been followed radiologically, clinically and by radiostereometric analysis (RSA) for up to ten years. The distal migration within the cement mantle had continued and reached a mean of 2 mm (0.5 to 4.0) at ten years. Internal rotation, also within the cement mantle, was a mean 3.8° (external 1.6° to internal 6.6°) The cement mantle did not show any sign of migration or loosening in relation to the femoral bone. There were no clinical or radiological signs indicating that the migration or rotation within the cement mantle had had any adverse effects for the patients.
['von Schewelov|T|T|', 'Carlsson|A|A|', 'Sanzén|L|L|', 'Besjakov|J|J|']
D000368:Aged D019644:Arthroplasty, Replacement, Hip D002484:Cementation D018450:Disease Progression D005260:Female D005500:Follow-Up Studies D005548:Foreign-Body Migration D006621:Hip Joint D006622:Hip Prosthesis D006801:Humans D008297:Male D008875:Middle Aged D015207:Osteoarthritis, Hip D011184:Postoperative Period D011474:Prosthesis Design D011475:Prosthesis Failure D059869:Radiostereometric Analysis D012399:Rotation
Migration C-stem RSA Hip arthroplasty Clinical results Radiological results