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a Departments of
Diagnostic Radiology, b and Physiology, c County Hospital, Helsingborg, Sweden
Spenshult's Hospital for Rheumatic Diseases,
Halmstad, Sweden, d Department of Diagnostic Radiology, University
Hospital, Lund, Sweden
Correspondence to: Dr T Boegård, Department of Diagnostic Radiology, County Hospital, S-251 87 Helsingborg, Sweden.
Accepted for publication 12 August 1998
OBJECTIVE
To compare
increased bone uptake of 99Tcm-MDP and magnetic
resonance (MR) detected subchondral lesions, osteophytes, and cartilage defects in the knee in middle aged people with longstanding knee pain.
METHODSFifty
eight people (aged 41-58 years, mean 50) with chronic knee pain, with
or without radiographic knee osteoarthritis, were examined with bone
scintigraphy. The pattern and the grade of increased bone uptake was
assessed. On the same day, a MR examination on a 1.0 T imager was
performed. The presence and the grade of subchondral lesions,
osteophytes, and cartilage defects were registered.
RESULTSThe 
values
describing the correlation between increased bone uptake and MR
detected subchondral lesions varied between 0.79 and 0.49, and between
increased bone uptake and MR detected osteophytes or cartilage defects
the values were <0.54. The values describing the correlation
between the grade of bone uptake and the grade of the different MR
findings was <0.57.
CONCLUSIONSGood
agreement was found between increased bone uptake and MR detected
subchondral lesion. The agreement between increased bone uptake and
osteophytes or cartilage defects was in general poor as well as the
agreement between the grade of bone uptake and the grade of the MR findings.
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