Cementless hemiarthroplasty in femoral neck fractures: evaluation of clinical results and measurement of migration by EBRA-FCA.
Aim of the present study was to evaluate migration rates of cementless primary hemiarthroplasty in acute femoral neck fractures. In a longitudinal, prospective study 46 patients were treated by cementless hemiarthroplasty. Clinical follow up was correlated with the EBRA-FCA method. In 30% of all patients stem migration amounted to more than 2 mm; further, these patients were seen to have a high level of activity. A high degree of migration in more than 30% of all patients requires critical scepticism toward further use of the investigated cementless stem as hemiarthroplasty. According to literature, migration of more than 2 mm suggests a high probability of early aseptic loosening. In patients with a low degree of activity good results could be observed; nevertheless, in patients with a high level of activity the combination of the investigated cementless stem with a solid fracture head cannot be recommended.
Department of Trauma Surgery and Sports Medicine, Medical University Innsbruck, Anichstr. 35, 6020 Innsbruck, Austria. thomas.klestil@uibk.ac.at
T
T
Klestil
R
R
Biedermann
A
A
Krüger
P
P
Gföller
W
W
Schmoelz
C
C
Rangger
M
M
Krismer
M
M
Blauth
D000368:Aged; D000369:Aged, 80 and over; D019643:Arthroplasty, Replacement / Q000295:instrumentation / Q000379:methods*; D005260:Female; D005265:Femoral Neck Fractures / Q000601:surgery*; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D011446:Prospective Studies; D011475:Prosthesis Failure; D016896:Treatment Outcome