Anterior Cruciate Ligament Reconstruction Clinical Trial
Official title:
Pre- and Post Operative Predictive Factors for Function 6 Months After Anterior Cruciate Ligament Reconstruction
Background:
An estimated 4000 Anterior Cruciate Ligament Injuries (ACL) occur annually in Norway (Granan
et al., 2004). 1630 primary ACL reconstructions were performed in Norway in 2008 (Norwegian
Arthroplasty Register, 2009). Approximately 120 of these ACL reconstructions were performed
at Haraldsplass Deaconess Hospital.
Physical therapists at our hospital are responsible for postoperative outpatient controls of
patients with a reconstructed anterior cruciate ligament. A clinical observation is that
stair walking (especially downstairs) may be problematic up to 6 months after ACL
reconstruction. One reason may be that the quadriceps muscle is unable to control the knee
when the subject is walking downstairs, and that the knee is perceived to be unstable. Other
contributing factors may be pain and swelling.
It is of interest to know which pre and post operative factors can predict measured and
patient reported function 6 months after ACL reconstruction. Previous research shows that
predictive factors for clinical outcome after ACL reconstruction are anterior knee pain
(Heijne et al., 2009), preoperative electromyography, early postoperative strength (McHugh
et al., 2002), preoperative quadriceps muscle strength deficits, meniscus injury and pain
(Eitzen et al., 2009), obesity, smoking and serious chondrosis (Kowalchuk et al., 2009).
Purpose:
1. To analyse which pre and post operative factors can predict measured and patient
reported function 6 months after Anterior Cruciate Ligament reconstruction.
2. To investigate if there is an asymmetry in step time between the affected and
unaffected leg during down stairs walking, and if degree of asymmetry decreases during
a 6 months period post operatively. Further we want to compare step time asymmetry with
other established outcome measures to investigate sensitivity to change over the
observation period and also compare the patient group in this study with a control
group of healthy subjects to see if asymmetry in the patient group after 6 months is
still higher than in healthy subjects.
Methods:
The investigators wish to recruit 35 people scheduled for anterior cruciate ligament (ACL)
reconstruction with hamstrings tendon graft.
Patients will be asked to write a training diary.
Data will be collected 1 day preoperatively, 2 days, 6 weeks, 3 months and 6 months post
operatively.
Ethics:
All participants will have to give informed consent before inclusion. All information
obtained through the surveys will be treated confidentially. Participation is completely
voluntary.
References:
GRANAN, L., ENGEBRETSEN, L. & BAHR, R. (2004) Kirurgi ved fremre korsbåndskader i Norge -
sett fra et idrettsmedisinsk perspektiv. Tidsskr Nor Lægeforen, 124, 928-930.
NASJONALT REGISTER FOR LEDDPROTESER (2009) Nasjonalt korsbåndregister. Ortopedisk klinikk
Haukeland Universitets Sykehus.
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