MRI of double-bundle ACL reconstruction: evaluation of graft findings.
Summary of "MRI of double-bundle ACL reconstruction: evaluation of graft findings."
OBJECTIVE:
To demonstrate the magnetic resonance imaging (MRI) findings of double-bundle (DB) anterior cruciate ligament (ACL) reconstruction grafts. MATERIALS AND
METHODS:
Sixty-six patients with DB ACL reconstruction were evaluated with MRI 2 years postoperatively. Graft thickness was measured separately by two musculoskeletal radiologists. The MRI findings of graft disruption, signal intensity (SI) changes, cystic degeneration, arthrofibrosis, and impingement were analyzed. The statistical significance of the association between MRI findings was calculated.
RESULTS:
The mean anteromedial (AM) graft thickness was reduced 9% and the mean posterolateral (PL) graft thickness was reduced 18% from the original graft thickness. Disruption was seen in 3% of AM grafts and 6% of PL grafts and a partial tear in 8 and 23%, respectively. Both grafts were disrupted in 3% of patients. Increased SI was seen in 14% of intact AM grafts and in 60% of partially torn AM grafts (p = 0.032). In PL grafts the increased SI was seen in 51% of the intact grafts and in 93% of the partially torn grafts (p = 0.005). Cystic degeneration was seen in 8% of AM grafts and in 5% of PL grafts. Diffuse arthrofibrosis was seen in 5% of patients and a localized cyclops lesion in 3% of patients. Impingement of the AM graft was seen in 8% of patients.
CONCLUSION:
Both grafts were disrupted in 3% of patients. Also, the frequencies of other complications were low. The use of orthogonal sequences in the evaluation of the PL graft SI seems to cause volume-averaging artefacts.
Affiliation
Medical Imaging Centre, Tampere University Hospital, FIN-33521, Tampere, Finland, tommi.kiekara@pshp.fi.
Journal Details
This article was published in the following journal.
Name: Skeletal radiology
ISSN: 1432-2161
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/21959568
- DOI: http://dx.doi.org/10.1007/s00256-011-1285-1
Medical and Biotech [MESH] Definitions
Host Vs Graft Reaction
The immune responses of a host to a graft. A specific response is GRAFT REJECTION.
Bundle Of His
Small band of specialized CARDIAC MUSCLE fibers that originates in the ATRIOVENTRICULAR NODE and extends into the membranous part of the interventricular septum. The bundle of His, consisting of the left and the right bundle branches, conducts the electrical impulses to the HEART VENTRICLES in generation of MYOCARDIAL CONTRACTION.
Bone-patellar Tendon-bone Graft
Fixation of the ANTERIOR CRUCIATE LIGAMENT, during surgical reconstruction, by the use of a bone- patellar tendon autograft.
Graft Vs Host Reaction
An immunological attack mounted by a graft against the host because of tissue incompatibility when immunologically competent cells are transplanted to an immunologically incompetent host; the resulting clinical picture is that of GRAFT VS HOST DISEASE.
Graft Survival
The survival of a graft in a host, the factors responsible for the survival and the changes occurring within the graft during growth in the host.
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