No adverse effects seen with early full weight bearing after total hip arthroplasty .
OrthoEvidence Journal (OE Journal) - ACE Report
OE Journal. 2013;1(11):95 Acta Orthop. 2007 Dec;78(6):730-843 patients undergoing uncemented total hip arthroplasty (THA) with hydroxyapatite coating and anteverted stem were randomized to undergo one of two procedures postoperatively. The first group participated in early full weight bearing while the second group participated in early partial weight bearing. The primary outcomes were migration of the stem and cup, as well as the penetration of the femoral head. Results at the 3-month follow-up indicated there were no adverse effects on early full weight bearing after THA.
Was the allocation sequence adequately generated?
Was allocation adequately concealed?
Blinding Treatment Providers: Was knowledge of the allocated interventions adequately prevented?
Blinding Outcome Assessors: Was knowledge of the allocated interventions adequately prevented?
Blinding Patients: Was knowledge of the allocated interventions adequately prevented?
Was loss to follow-up (missing outcome data) infrequent?
Are reports of the study free of suggestion of selective outcome reporting?
Were outcomes objective, patient-important and assessed in a manner to limit bias (ie. duplicate assessors, Independent assessors)?
Was the sample size sufficiently large to assure a balance of prognosis and sufficiently large number of outcome events?
Was investigator expertise/experience with both treatment and control techniques likely the same (ie.were criteria for surgeon participation/expertise provided)?
Ja = 1
Ungewiss = 0.5
Nicht relevant = 0
Nein = 0
Die Bewertung der Berichtskriterien bewertet die Transparenz, mit der die Autoren die methodischen und studienspezifischen Merkmale der Studie in der Veröffentlichung angeben. Die Bewertung ist in fünf Kategorien unterteilt, die im Folgenden vorgestellt werden.
4/4
Randomization
3/4
Outcome Measurements
2/4
Inclusion / Exclusion
4/4
Therapy Description
3/4
Statistics
Detsky AS, Naylor CD, O'Rourke K, McGeer AJ, L'Abbé KA. J Clin Epidemiol. 1992;45:255-65
Der Fragilitätsindex ist ein Instrument, das bei der Interpretation signifikanter Ergebnisse hilft und ein Maß für die Stärke eines Ergebnisses liefert. Der Fragilitätsindex gibt die Anzahl der aufeinanderfolgenden Ereignisse an, die zu einem dichotomen Ergebnis hinzugefügt werden müssen, damit das Ergebnis nicht mehr signifikant ist. Eine kleine Zahl steht für ein schwächeres Ergebnis und eine große Zahl für ein stärkeres Ergebnis.
Warum wurde diese Studie jetzt benötigt?
Early weight bearing is often recommended and administered following total hip arthroplasty (THA), but there is still a lack of evidence to support this procedure. Some recent studies have examined clinical results in early weight bearing but there have yet to be any studies where analysis is performed using radiostereometry. This study examines the outcomes of early full and partial weight bearing after THA using radiostereometry to assess migration of the stem and cup as well as penetration of the femoral head.
Was war die wichtigste Forschungsfrage?
What are the outcomes of early full and partial weight bearing after uncemented total hip arthroplasty on migration of the stem and cup, as well as the penetration of the femoral head in patients with hip osteoarthritis at 3 months?
- The partial weight bearing group (control) had a mean proximal (+)/ distal (-) migration of the stem of -0.14 mm (-1.93-0.11) at 3 months compared to the full weight bearing group (intervention) which had a migration of -0.31 mm (-4.30-0.16). (p=0.6)
- The mean migration at the 1-year follow-up was -0.17 mm (-2.18-0.21) for the partial weight bearing group and -0.28 mm (-4.31-0.11) for the full weight bearing group. (p=0.9)
- No significant differences were seen in stem rotations between the two groups. (p>0.2)
- Both groups had similar cup translations, rotations, and femoral head penetration. (p>0.1)
Was sollte ich mir besonders merken?
Full weight bearing immediately after uncemented total hip arthroplasty (THA) is justified under the conditions of this study. No adverse effects were seen in patients undergoing the early full weight bearing procedure initially and up to the 1-year follow-up after THA.
Wie wird sich dies auf die Behandlung meiner Patienten auswirken?
Full weight bearing after THA is a justifiable option for postoperative management in patients based on the findings of this study. However, further trials are required to assess if early weight bearing provides clinically significant improvements in functional outcomes for patients undergoing THA.
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