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Knee. 2015 Sep;22(4):341-6. doi: 10.1016/j.knee.2015.03.007. Epub 2015 Apr 15.

Role of magnetic resonance imaging in the diagnosis of the painful unicompartmental knee arthroplasty.

Author information

1
Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, United States. Electronic address: caroline.park7@gmail.com.
2
Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, United States.

Abstract

BACKGROUND:

Unicompartmental knee arthroplasty (UKA) is a well established method for the treatment of single compartment arthritis; however, a subset of patients still present with continued pain after their procedure in the setting of a normal radiographic examination. This study investigates the effectiveness of magnetic resonance imaging (MRI) in guiding the diagnosis of the painful unicompartmental knee arthroplasty.

METHODS:

An IRB-approved retrospective review identified 300 consecutive UKAs performed over a three years period with 28 cases of symptomatic UKA (nine percent) with normal radiographic images.

RESULTS:

MRI examination was instrumental in finding a diagnosis that went undetected on radiographs. Based on MRI findings, 10 (36%) patients underwent surgery whilst 18 (64%) were treated conservatively.

CONCLUSION:

This study supports the use of MRI as a valuable imaging modality for managing symptomatic unicompartmental knee arthroplasty.

LEVEL OF EVIDENCE:

Case series.

KEYWORDS:

Magnetic resonance imaging; Pain; Radiograph; Unicompartmental knee arthroplasty

PMID:
25890507
DOI:
10.1016/j.knee.2015.03.007
[Indexed for MEDLINE]

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