MR imaging of the knee: can changes in the intracapsular fat pads be used as a sign of synovial proliferation in the presence of an effusion?

Schweitzer, Mark E.; Falk, Abigail; Pathria, Mini N.; Brahme, S.K.; Hodler, J; Resnick, Donald

doi:10.2214/ajr.160.4.8456672

Cited by 47 publications

(25 citation statements)

References 11 publications

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“…The latter, also known as quadriceps fat pad, is located within the joint capsule superior to the patella. It fills the gap between the quadriceps tendon, the retropatellar cartilage, and the suprapatellar joint recess, which separates it from the prefemoral fat pad [10][11][12][13]. Like the impingement syndrome of the infrapatellar fat pad, also known as Hoffa's disease [4,5,[14][15][16], abnormalities may also be found in the SPFPs that have typical MRI findings and may be associated with clinical symptoms [10,11,17,18].…”

Section: Introductionmentioning

confidence: 99%

Hyperintense signal alteration in the suprapatellar fat pad on MRI is associated with degeneration of the patellofemoral joint over 48 months: data from the Osteoarthritis Initiative

et al. 2017

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Hyperintense signal alteration in the suprapatellar fat pad on MRI is associated with degeneration of the patellofemoral joint over 48 months: data from the Osteoarthritis Initiative. Results Baseline SPFP signal alterations were found in 51% of the subjects (n = 217), of whom 11% (n = 23) additionally had a mass effect. Progression of cartilage lesions was significantly higher in subjects with signal alteration versus without (adjusted mean increases, 95% CI; patella: 0.29, −0.07 to 0.64 vs −0.04, −0.40 to 0.31; p < 0.001; trochlea: 0.47, 0.16 to 0.77 vs 0.31, 0.01 to 0.61; p = 0.007). BML progression was also more likely in subjects with signal alteration (OR 1.75, 95% CI 1.09 to 2.82; p = 0.021). Mass effect was not associated with joint degeneration and SPFP findings were not associated with clinical worsening (p > 0.18 for all). Conclusion Patellofemoral joint degeneration over 48 months was significantly increased in subjects with SPFP signal alteration, suggesting an association between SPFP abnormalities and the progression of patellofemoral OA. Permalink

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Section: Introductionmentioning

confidence: 99%

Hyperintense signal alteration in the suprapatellar fat pad on MRI is associated with degeneration of the patellofemoral joint over 48 months: data from the Osteoarthritis Initiative

et al. 2017

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“…This may be explained by the fact that the recess is not covered by joint capsule and the posterior surface of the SPFP is lined solely by synovium [9,10]. No joint effusion was present in the suprapatellar recess in our patients.…”

Section: Discussionmentioning

confidence: 56%

“…Various theories have been proposed to explain AKP in the absence of associated injuries [5][6][7]9,11].…”

Section: Discussionmentioning

confidence: 99%

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Suprapatellar fat pad inflammation in step aerobics athletes: MR imaging evaluation of two cases

2012

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AbstractStep aerobics is one of the most popular exercises with established benefits to cardiovascular status. This activity is associated with injuries which include patellar or talar chondral lesions, quadriceps tendinopathy, Achilles tendinopathy or tear, shin splints and muscle soreness. The purpose of this case report is to present two step aerobics athletes, suffering from anterior knee pain. We observed that their knee MR examination disclosed only suprapatellar fat pad edema. No other findings were noticed. In addition, we discuss the possible pathogenetic mechanism of this entity which has not been previously reported in the literature.

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“…However , anteriorly its margin lies external to the synovium , with the extensor mechanism serving as its anterior margin (2).…”

Section: Discussionmentioning

confidence: 99%

MR Imaging of the Coronary Ligaments of the Knee Joint: Cadaveric and Clinical Study

Yoon¹,

Ryu²,

Ahn³

1995

J Korean Radiol Soc

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Purpose: Our objective was to identify a coronary ligament of the knee joint on MRimages.Materials and Methods: We retrospectively evaluated 50 MR knee studies. Using MR imaging , the thickness and length of the anteroinferior portion of the capsule were measured and compared at the medial and lateral compartments. Wealsocarefullydissected 5fixed cadaveric kneesand took photographs.Results: The thickened synovial membrane(coronary ligament) of the anterior horn of the lateral meniscus appeared as a band of low signal intensity on MR images. On anatomic dissection of the knee joints, the inferior syno'lial attachment of the lateral men iscus was more redu ndant than the medial side.Conclusion : Anatomic correlation revealed that the coronary ligament cön-tributed to the band-like structure at the anteroinferior aspect ofthe lateral men-ISCUS.Index Words : Knee , MR Knee , ligaments, menisci , and cartilage INTRODUCTIONThe thick , convex border of each meniscus is connected to the deep surface of the fibrous capsule ; the caspular fibers attaching the menisci to the condyles of the tibia constitute the medial and lateral coronary ligaments. The capsular attachments of the menisci are , however , different on each side. Prom inent i nferior lateral recesses are commonly seen on arthrographic studies(1). However there has been no report on the synovial membrane using MR imaging. A thorough knowledge of the normal anatomy of the synovial recesses is essential in order to interpret abnormalities ofthe knee.The purpose of this study is to describe the nature of a band-like structure at the anteroinferior aspect of the lateral meniscus of the knee. -797 MATERIALS and METHODSFifty MR knee studies were retrospectively evaluated including 10 cases with distended synovial recesses by effusion . Special attention was paid to the inferior recess of both menisci. Patient age ranged from 17 to 53 years (mean : 33.5 years) ; there were 37 men and 13 women Using MR , the thickness and the length of the anteroinferior portion of the capsule were measured , and medial and lateral compartments were compared. In the lateral compartments , it was possible to measure the length and thickness for all 50 cases. In the medial compartment, it was only possible to measure the length in the ten cases with distended caps 비 es by joint effusion. Length of the capsule was measured from the anteroinferior border of both menisci to the tibial attachment at the mid-sagittal images of the menisci Thickness of the caps 비 ar attachment of the lateral meniscus was measured at the thickest portion on mid-sagittal images of the menisci (Fig 1). For each length and thickness , the mean , the standard deviation , and the standard error were computed and compared.We also carefully dissected 5 fixed cadaveric knees and took photographs. MR imaging was not performed RESULTSThe anterior component of the inferior lateral recess was easily recognizable and was measurable in all cases. On sagittal MR images , the anteroinferior capsular attachment of the latera...

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MR imaging of the knee: can changes in the intracapsular fat pads be used as a sign of synovial proliferation in the presence of an effusion?

Cited by 47 publications

References 11 publications

Hyperintense signal alteration in the suprapatellar fat pad on MRI is associated with degeneration of the patellofemoral joint over 48 months: data from the Osteoarthritis Initiative

Hyperintense signal alteration in the suprapatellar fat pad on MRI is associated with degeneration of the patellofemoral joint over 48 months: data from the Osteoarthritis Initiative

Suprapatellar fat pad inflammation in step aerobics athletes: MR imaging evaluation of two cases

MR Imaging of the Coronary Ligaments of the Knee Joint: Cadaveric and Clinical Study

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