TITLE:
MRI Evaluation of Acute Internal Derangement of Knee
AUTHORS:
Venkateshwaran Arumugam, Ganesan Ram Ganesan, Paarthipan Natarajan
KEYWORDS:
Anterior Cruciate, Posterior Cruciate, Meniscus, Internal Derangement Knee
JOURNAL NAME:
Open Journal of Radiology,
Vol.5 No.2,
June
2,
2015
ABSTRACT: Introduction: Internal derangement of the knee is a blanket term used to
cover a group of disorders involving destruction of the normal functioning of
the ligaments or cartilages. MRI provides excellent soft tissue contrast and is
capable of evaluating the soft tissue and bony structures in multiple imaging
planes which provide significant advantage in IDK. Methods and Materials: A prospective
study of hundred twenty patients who underwent MRI for the diagnosis of
internal derangement of knee between the period January 2013 and January 2015
was conducted. All the patients gave a history of knee joint pain following
trauma and clinically suspected to have meniscal and ligament tears. Patients
were evaluated using Philips intera R 11 1.5 T with pulsar gradient system
using a sensor extremity coil. Results: Commonest lesion detected in our study
was ACL tear followed by meniscal tear and medial collateral ligament injury.
The most common sign of cruciate ligament injury was hyper intensity in the
ligament. Grade 3 was the most common grade of meniscal tear. Conclusion: MRI
is unique in its ability to evaluate the internal structure as well as the
surface of the meniscus. Many anatomical variants can mimic a tear on MRI. MRI
is an excellent non invasive modality for imaging the knee.