Abstract
OBJECTIVE. Nonelderly patients presenting with knee pain often have patellofemoral maltracking or impingement abnormalities. There is a relative paucity of literature on the incidence and significance of impingement-related edema of the superolateral aspect of Hoffa's (infrapatellar) fat pad in these cases. Our study was designed to systematically evaluate the correlation of superolateral Hoffa's fat pad edema with various anatomic parameters of trochlear morphology and patellar alignment. MATERIALS AND METHODS. We evaluated 50 knee MRI examinations in 47 patients for the presence of edema in superolateral Hoffa's fat pad and associated anatomic abnormalities of the patellofemoral joint. RESULTS. Of the 50 examinations, 25 (50%) showed superolateral Hoffa's fat pad edema, and statistically significant differences were seen between those with and without edema with respect to sex (6/22 men vs 19/28 women) and patellar tendon patellar-length ratio (1.3 ± 0.16 and 1.1 ± 0.12 for those with and without edema, respectively). CONCLUSION. The findings in our study suggest that edema in superolateral Hoffa's fat pad may be an important indicator of underlying patellofemoral maltracking or impingement in younger, symptomatic patients.
| Original language | English |
|---|---|
| Pages (from-to) | 1367-1373 |
| Number of pages | 7 |
| Journal | American Journal of Roentgenology |
| Volume | 195 |
| Issue number | 6 |
| DOIs | |
| State | Published - Dec 1 2010 |
| Externally published | Yes |
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Keywords
- Hoffa's fat pad edema
- Infrapatellar fat pad
- Malalignment
- Patellofemoral impingement
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
Cite this
Superolateral Hoffa's fat pad edema : Association with patellofemoral maltracking and impingement. / Subhawong, Ty; Eng, John; Carrino, John A.; Chhabra, Avneesh.
In: American Journal of Roentgenology, Vol. 195, No. 6, 01.12.2010, p. 1367-1373.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Superolateral Hoffa's fat pad edema
T2 - Association with patellofemoral maltracking and impingement
AU - Subhawong, Ty
AU - Eng, John
AU - Carrino, John A.
AU - Chhabra, Avneesh
PY - 2010/12/1
Y1 - 2010/12/1
N2 - OBJECTIVE. Nonelderly patients presenting with knee pain often have patellofemoral maltracking or impingement abnormalities. There is a relative paucity of literature on the incidence and significance of impingement-related edema of the superolateral aspect of Hoffa's (infrapatellar) fat pad in these cases. Our study was designed to systematically evaluate the correlation of superolateral Hoffa's fat pad edema with various anatomic parameters of trochlear morphology and patellar alignment. MATERIALS AND METHODS. We evaluated 50 knee MRI examinations in 47 patients for the presence of edema in superolateral Hoffa's fat pad and associated anatomic abnormalities of the patellofemoral joint. RESULTS. Of the 50 examinations, 25 (50%) showed superolateral Hoffa's fat pad edema, and statistically significant differences were seen between those with and without edema with respect to sex (6/22 men vs 19/28 women) and patellar tendon patellar-length ratio (1.3 ± 0.16 and 1.1 ± 0.12 for those with and without edema, respectively). CONCLUSION. The findings in our study suggest that edema in superolateral Hoffa's fat pad may be an important indicator of underlying patellofemoral maltracking or impingement in younger, symptomatic patients.
AB - OBJECTIVE. Nonelderly patients presenting with knee pain often have patellofemoral maltracking or impingement abnormalities. There is a relative paucity of literature on the incidence and significance of impingement-related edema of the superolateral aspect of Hoffa's (infrapatellar) fat pad in these cases. Our study was designed to systematically evaluate the correlation of superolateral Hoffa's fat pad edema with various anatomic parameters of trochlear morphology and patellar alignment. MATERIALS AND METHODS. We evaluated 50 knee MRI examinations in 47 patients for the presence of edema in superolateral Hoffa's fat pad and associated anatomic abnormalities of the patellofemoral joint. RESULTS. Of the 50 examinations, 25 (50%) showed superolateral Hoffa's fat pad edema, and statistically significant differences were seen between those with and without edema with respect to sex (6/22 men vs 19/28 women) and patellar tendon patellar-length ratio (1.3 ± 0.16 and 1.1 ± 0.12 for those with and without edema, respectively). CONCLUSION. The findings in our study suggest that edema in superolateral Hoffa's fat pad may be an important indicator of underlying patellofemoral maltracking or impingement in younger, symptomatic patients.
KW - Hoffa's fat pad edema
KW - Infrapatellar fat pad
KW - Malalignment
KW - Patellofemoral impingement
UR - http://www.scopus.com/inward/record.url?scp=78649749123&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78649749123&partnerID=8YFLogxK
U2 - 10.2214/AJR.10.4668
DO - 10.2214/AJR.10.4668
M3 - Article
VL - 195
SP - 1367
EP - 1373
JO - AJR. American journal of roentgenology
JF - AJR. American journal of roentgenology
SN - 0361-803X
IS - 6
ER -