Measurement of Capsular Thickness in Magnetic Resonance Arthrography in Idiopathic Adhesive Capsulitis of Hip
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Purpose: The clinical suspicion of idiopathic adhesive capsulitis of the hip (IACH) involves restricted range ofmotion and normal hip radiographs. The purpose of this study was to delineate the characteristic findingsobserved on magnetic resonance arthrography (MRA) by identifying the anatomical structures involved and theirsignificance on clinical presentation of restricted range of motion. Materials and Methods: We retrospectively evaluated MRA’s of 46 hips (44 patients) who suffered hip painfrom September 2006 to August 2012 in our hospital. Of those, 10 cases (8 patients) with clinical suspicion ofIACH were compared to 20 normal hip cases (control group). To identify anatomical evidence of adhesivecapsulitis in the MRA’s of the IACH group, capsular thickness was measured superiorly, inferiorly, anteriorlyand posteriorly, and compared to that of the randomly selected control group. Results: Comparison of the MRA findings of the control group to that of the IACH group showed that there wasa statistically significant increase in the mean thickness of the joint capsule superiorly and posteriorly (P<0.01),while comparison of examination findings revealed a statistically significant decrease in the mean range ofmotion (flexion 122.5。±5.5。/abduction 28.0。±2.8。/adduction 26.5。±2.4。/external rotation 30.5。±3.8。/internal rotation 25.5。±2.4。) in the IACH group. Conclusion: A change in the capsular thickness on MRA is a common finding in IACH patients with theincrease more evident in the posterior and superior capsules than the anterior and inferior capsules.
Abstract
Purpose: The clinical suspicion of idiopathic adhesive capsulitis of the hip (IACH) involves restricted range ofmotion and normal hip radiographs. The purpose of this study was to delineate the characteristic findingsobserved on magnetic resonance arthrography (MRA) by identifying the anatomical structures involved and theirsignificance on clinical presentation of restricted range of motion. Materials and Methods: We retrospectively evaluated MRA’s of 46 hips (44 patients) who suffered hip painfrom September 2006 to August 2012 in our hospital. Of those, 10 cases (8 patients) with clinical suspicion ofIACH were compared to 20 normal hip cases (control group). To identify anatomical evidence of adhesivecapsulitis in the MRA’s of the IACH group, capsular thickness was measured superiorly, inferiorly, anteriorlyand posteriorly, and compared to that of the randomly selected control group. Results: Comparison of the MRA findings of the control group to that of the IACH group showed that there wasa statistically significant increase in the mean thickness of the joint capsule superiorly and posteriorly (P<0.01),while comparison of examination findings revealed a statistically significant decrease in the mean range ofmotion (flexion 122.5。±5.5。/abduction 28.0。±2.8。/adduction 26.5。±2.4。/external rotation 30.5。±3.8。/internal rotation 25.5。±2.4。) in the IACH group. Conclusion: A change in the capsular thickness on MRA is a common finding in IACH patients with theincrease more evident in the posterior and superior capsules than the anterior and inferior capsules.
참고문헌 (22)
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