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Patrick Omoumi - One of the best experts on this subject based on the ideXlab platform.
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Cartilage can be thicker in advanced osteoarthritic knees: a tridimensional quantitative analysis of cartilage thickness at Posterior Aspect of femoral condyles
The British journal of radiology, 2018Co-Authors: Patrick Omoumi, H. Babel, Brigitte M. Jolles, Julien FavreAbstract:Objective:To test, through tridimensional analysis, whether (1) cartilage thickness at the Posterior Aspect of femoral condyles differs in knees with medial femorotibial osteoarthritis (OA) compared to non-OA knees; (2) the location of the thickest cartilage at the Posterior Aspect of femoral condyles differs between OA and non-OA knees.Methods:CT arthrograms of knees without radiographic OA (n = 30) and with severe medial femorotibial OA (n = 30) were selected retrospectively from patients over 50 years of age. The groups did not differ in gender, age and femoral size. CT arthrograms were segmented to measure the mean cartilage thickness, the maximal cartilage thickness and its location in a region of interest at the Posterior Aspect of condyles.Results:For the medial condyle, mean and maximum cartilage thicknesses were statistically significantly higher in OA knees compared to non-OA knees [1.66 vs 1.46 mm (p = 0.03) and 2.56 vs 2.14 mm (p = 0.003), respectively]. The thickest cartilage was located in t...
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cartilage thickness at the Posterior medial femoral condyle is increased in femorotibial knee osteoarthritis a cross sectional ct arthrography study part 2
Osteoarthritis and Cartilage, 2015Co-Authors: Patrick Omoumi, Nicolas Michoux, E. Thienpont, Frank W. Roemer, Vande B BergAbstract:Summary Objective To evaluate the thickness of cartilage at the Posterior Aspect of the medial and lateral condyle in Osteoarthritis (OA) knees compared to non-OA knees using computed tomography arthrography (CTA). Design 535 consecutive knee CTAs (mean patient age = 48.7 ± 16.0; 286 males), were retrospectively analyzed. Knees were radiographically classified into OA or non-OA knees according to a modified Kellgren/Lawrence (K/L) grading scheme. Cartilage thickness at the Posterior Aspect of the medial and lateral femoral condyles was measured on sagittal reformations, and compared between matched OA and non-OA knees in the whole sample population and in subgroups defined by gender and age. Results The cartilage of the Posterior Aspect of medial condyle was statistically significantly thicker in OA knees (2.43 mm (95% confidence interval (CI) = 2.36, 2.51)) compared to non-OA knees (2.13 mm (95%CI = 2.02, 2.17)) in the entire sample population ( P P ≤ 0.01), except for females above 60 years old ( P = 0.07). Increase in cartilage thickness at the Posterior Aspect of the medial condyle was associated with increasing K/L grade in the entire sample population, as well as for males and females separately (regression coefficient = 0.10–0.12, all P Conclusions Cartilage thickness at the non-weight-bearing Posterior Aspect of the medial condyle, but not of the lateral condyle, was increased in OA knees compared to non-OA knees. Furthermore, cartilage thickness at the Posterior Aspect of the medial condyle increased with increasing K/L grade.
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Anatomical distribution of areas of preserved cartilage in advanced femorotibial osteoarthritis using CT arthrography (Part 1)
Osteoarthritis and Cartilage, 2015Co-Authors: Patrick Omoumi, Nicolas Michoux, E. Thienpont, Frank W. Roemer, B. Vande BergAbstract:Summary Objective To determine subregions of normal and abnormal cartilage in advanced stages of femorotibial osteoarthritis (OA) by mapping the entire femorotibial joint in a cohort of pre-total knee replacement (TKR) OA knees. Design We defined an areal subdivision of the femorotibial articular cartilage surface on CT arthrography (CTA), allowing the division of the femorotibial articular surface into multiple (up to n = 204 per knee) subregions and the comparison of the same areas between different knees. Two readers independently classified each cartilage area as normal, abnormal or non-assessable in 41 consecutive pre-TKR OA knees. Results A total of 6447 cartilage areas (from 41 knees) were considered assessable by both readers. The average proportion of preserved cartilage was lower in the medial femorotibial joint than in the lateral femorotibial joint for both readers (32.0/69.8% and 33.9/68.5% (medial/lateral) for reader 1 and 2 respectively, all P High frequencies of normal cartilage were observed at the Posterior Aspect of the medial condyle (up to 89%), and the anterior Aspect of the lateral femorotibial compartment (up to 100%). The Posterior Aspect of the medial condyle was the area that most frequently exhibited preserved cartilage in the medial femorotibial joint, contrasting with the high frequency of cartilage lesions in the rest of that compartment. Conclusions Cartilage at the Posterior Aspect of the medial condyle, and at the anterior Aspect of the lateral femorotibial compartment, may be frequently preserved in advanced grades of OA.
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Knee osteoarthritis : is it just wear and tear ? Articular cartilage is thickened in preserved areas of osteoarthritic knees
2015Co-Authors: Patrick OmoumiAbstract:Our hypothesis was that preserved cartilage in osteoarthritic (OA) joints is thicker compared to non-OA joints. We took the femorotibial joint as a model. First, we determined that Computed Tomography arthrography (CTA) is the imaging modality with the highest sensitivity and interobserver agreement for the detection of cartilage surface lesions. Second, we analyzed sources of interobserver disagreement for the grading of cartilage at CTA. Third, we identified a target area of cartilage that is frequently preserved in knee OA until late stages of the disease, at the Posterior Aspect of the medial condyle. Finally, we showed that cartilage thickness at the Posterior Aspect of the medial condyle is increased in OA knees compared to non-OA knees, and that this thickening is correlated to the grade of OA.
T Takashima - One of the best experts on this subject based on the ideXlab platform.
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Right hepatic arterial supply to the Posterior Aspect of segment IV of the liver: analysis by CT during hepatic arteriography
Abdominal imaging, 1999Co-Authors: Kenichi Kobayashi, M Kadoya, J Yoshikawa, Y Kawamori, Osamu Matsui, T TakashimaAbstract:Objective: To examine the frequency of the right hepatic arterial supply to the Posterior Aspect of segment IV (PASIV) of the liver shown on computed tomography (CT) during hepatic arteriography (CTHA).
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Posterior Aspect of hepatic segment iv patterns of portal venule branching at helical ct during arterial portography
Radiology, 1997Co-Authors: O Matsui, M Kadoya, J Yoshikawa, T Gabata, Y Kawamori, Kazuhiko Ueda, K Nobata, T TakashimaAbstract:PURPOSE: To determine the anatomy of the portal venous system in the Posterior Aspect of segment IV of the liver by using helical computed tomography (CT) during arterial portography (CTAP). MATERIALS AND METHODS: One hundred consecutive patients underwent CTAP. Helical CT during hepatic arteriography was performed in 20 patients. In seven patients with hepatocellular carcinoma in the Posterior Aspect of segment IV, the feeding arteries were also analyzed. RESULTS: A venule from the intrahepatic portal vein to segment IV was seen in all patients. Other findings included a tiny venule from the distal part of the main left portal vein (n = 36), from the proximal left main portal vein (n = 20), and from the right portal vein (n = 18). Aberrant right gastric venous drainage and/or parabiliary venous drainage directly into the Posterior Aspect was present in 14 patients. In two patients, a tiny accompanying artery was seen on images from CT during hepatic arteriography. In seven patients with hepatocellular carcinoma, the main feeding artery branched from the right (n = 2) or left (n = 5) hepatic artery. CONCLUSION: CTAP adequately demonstrates the tiny portal venous and arterial branches from the main right or left portal vein that distribute to the Posterior Aspect of segment IV. Knowledge of this vascular anatomy is clinically important.
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Posterior Aspect of hepatic segment IV: patterns of portal venule branching at helical CT during arterial portography.
Radiology, 1997Co-Authors: O Matsui, M Kadoya, J Yoshikawa, T Gabata, Y Kawamori, Kazuhiko Ueda, K Nobata, T TakashimaAbstract:PURPOSE: To determine the anatomy of the portal venous system in the Posterior Aspect of segment IV of the liver by using helical computed tomography (CT) during arterial portography (CTAP). MATERIALS AND METHODS: One hundred consecutive patients underwent CTAP. Helical CT during hepatic arteriography was performed in 20 patients. In seven patients with hepatocellular carcinoma in the Posterior Aspect of segment IV, the feeding arteries were also analyzed. RESULTS: A venule from the intrahepatic portal vein to segment IV was seen in all patients. Other findings included a tiny venule from the distal part of the main left portal vein (n = 36), from the proximal left main portal vein (n = 20), and from the right portal vein (n = 18). Aberrant right gastric venous drainage and/or parabiliary venous drainage directly into the Posterior Aspect was present in 14 patients. In two patients, a tiny accompanying artery was seen on images from CT during hepatic arteriography. In seven patients with hepatocellular ca...
Steven L. Moran - One of the best experts on this subject based on the ideXlab platform.
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Outcome of local anconeus flap transfer to cover soft tissue defects over the Posterior Aspect of the elbow
Journal of shoulder and elbow surgery, 2011Co-Authors: Bassem T. Elhassan, Furkan Erol Karabekmez, Chung Chen Hsu, Scott P. Steinmann, Steven L. MoranAbstract:Background To report the outcome of using local pedicled anconeus flap (LPAF) to cover soft tissue defects over the Posterior Aspect of the elbow. Methods Twenty elbows in 20 patients who had chronic soft tissue defects over the Posterior Aspect of the elbow that were managed with the use of LPAF were included in this study. The mean soft tissue defect size averaged 4 × 3 cm (range, 2 × 3 cm to 7 × 4 cm). The mean duration of symptoms was 11 months (range, 4-96), and the mean number of debridement and attempt at closure of the wound defect before the flap was performed was 3 (range, 2-7). Results Wound healing occurred in all elbows at an average 3 weeks (range, 2-5) after surgery. No flap complication either at the time of the surgery or postoperatively was recorded. At the final follow-up that averaged 17 months (range, 15-20) after surgery, there were significant improvements in the subjective elbow value (SEV) and Mayo Elbow Performance Score (MEPS) from average 70% (range, 50-80%) and 74% (range, 65-80%) to an average 95% (80-100%) and 90% (range, 85-100%), respectively (P = .001). All patients had full range of motion of the elbow, and all were satisfied with the surgery and would do it again. Conclusion The LAPF is a reliable flap that could be used to cover chronic soft tissue defect around the Posterior Aspect of the elbow, with expected wound healing in all patients at an average of 3 weeks after surgery.
O Matsui - One of the best experts on this subject based on the ideXlab platform.
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Posterior Aspect of hepatic segment iv patterns of portal venule branching at helical ct during arterial portography
Radiology, 1997Co-Authors: O Matsui, M Kadoya, J Yoshikawa, T Gabata, Y Kawamori, Kazuhiko Ueda, K Nobata, T TakashimaAbstract:PURPOSE: To determine the anatomy of the portal venous system in the Posterior Aspect of segment IV of the liver by using helical computed tomography (CT) during arterial portography (CTAP). MATERIALS AND METHODS: One hundred consecutive patients underwent CTAP. Helical CT during hepatic arteriography was performed in 20 patients. In seven patients with hepatocellular carcinoma in the Posterior Aspect of segment IV, the feeding arteries were also analyzed. RESULTS: A venule from the intrahepatic portal vein to segment IV was seen in all patients. Other findings included a tiny venule from the distal part of the main left portal vein (n = 36), from the proximal left main portal vein (n = 20), and from the right portal vein (n = 18). Aberrant right gastric venous drainage and/or parabiliary venous drainage directly into the Posterior Aspect was present in 14 patients. In two patients, a tiny accompanying artery was seen on images from CT during hepatic arteriography. In seven patients with hepatocellular carcinoma, the main feeding artery branched from the right (n = 2) or left (n = 5) hepatic artery. CONCLUSION: CTAP adequately demonstrates the tiny portal venous and arterial branches from the main right or left portal vein that distribute to the Posterior Aspect of segment IV. Knowledge of this vascular anatomy is clinically important.
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Posterior Aspect of hepatic segment IV: patterns of portal venule branching at helical CT during arterial portography.
Radiology, 1997Co-Authors: O Matsui, M Kadoya, J Yoshikawa, T Gabata, Y Kawamori, Kazuhiko Ueda, K Nobata, T TakashimaAbstract:PURPOSE: To determine the anatomy of the portal venous system in the Posterior Aspect of segment IV of the liver by using helical computed tomography (CT) during arterial portography (CTAP). MATERIALS AND METHODS: One hundred consecutive patients underwent CTAP. Helical CT during hepatic arteriography was performed in 20 patients. In seven patients with hepatocellular carcinoma in the Posterior Aspect of segment IV, the feeding arteries were also analyzed. RESULTS: A venule from the intrahepatic portal vein to segment IV was seen in all patients. Other findings included a tiny venule from the distal part of the main left portal vein (n = 36), from the proximal left main portal vein (n = 20), and from the right portal vein (n = 18). Aberrant right gastric venous drainage and/or parabiliary venous drainage directly into the Posterior Aspect was present in 14 patients. In two patients, a tiny accompanying artery was seen on images from CT during hepatic arteriography. In seven patients with hepatocellular ca...
Y Kawamori - One of the best experts on this subject based on the ideXlab platform.
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Right hepatic arterial supply to the Posterior Aspect of segment IV of the liver: analysis by CT during hepatic arteriography
Abdominal imaging, 1999Co-Authors: Kenichi Kobayashi, M Kadoya, J Yoshikawa, Y Kawamori, Osamu Matsui, T TakashimaAbstract:Objective: To examine the frequency of the right hepatic arterial supply to the Posterior Aspect of segment IV (PASIV) of the liver shown on computed tomography (CT) during hepatic arteriography (CTHA).
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Posterior Aspect of hepatic segment iv patterns of portal venule branching at helical ct during arterial portography
Radiology, 1997Co-Authors: O Matsui, M Kadoya, J Yoshikawa, T Gabata, Y Kawamori, Kazuhiko Ueda, K Nobata, T TakashimaAbstract:PURPOSE: To determine the anatomy of the portal venous system in the Posterior Aspect of segment IV of the liver by using helical computed tomography (CT) during arterial portography (CTAP). MATERIALS AND METHODS: One hundred consecutive patients underwent CTAP. Helical CT during hepatic arteriography was performed in 20 patients. In seven patients with hepatocellular carcinoma in the Posterior Aspect of segment IV, the feeding arteries were also analyzed. RESULTS: A venule from the intrahepatic portal vein to segment IV was seen in all patients. Other findings included a tiny venule from the distal part of the main left portal vein (n = 36), from the proximal left main portal vein (n = 20), and from the right portal vein (n = 18). Aberrant right gastric venous drainage and/or parabiliary venous drainage directly into the Posterior Aspect was present in 14 patients. In two patients, a tiny accompanying artery was seen on images from CT during hepatic arteriography. In seven patients with hepatocellular carcinoma, the main feeding artery branched from the right (n = 2) or left (n = 5) hepatic artery. CONCLUSION: CTAP adequately demonstrates the tiny portal venous and arterial branches from the main right or left portal vein that distribute to the Posterior Aspect of segment IV. Knowledge of this vascular anatomy is clinically important.
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Posterior Aspect of hepatic segment IV: patterns of portal venule branching at helical CT during arterial portography.
Radiology, 1997Co-Authors: O Matsui, M Kadoya, J Yoshikawa, T Gabata, Y Kawamori, Kazuhiko Ueda, K Nobata, T TakashimaAbstract:PURPOSE: To determine the anatomy of the portal venous system in the Posterior Aspect of segment IV of the liver by using helical computed tomography (CT) during arterial portography (CTAP). MATERIALS AND METHODS: One hundred consecutive patients underwent CTAP. Helical CT during hepatic arteriography was performed in 20 patients. In seven patients with hepatocellular carcinoma in the Posterior Aspect of segment IV, the feeding arteries were also analyzed. RESULTS: A venule from the intrahepatic portal vein to segment IV was seen in all patients. Other findings included a tiny venule from the distal part of the main left portal vein (n = 36), from the proximal left main portal vein (n = 20), and from the right portal vein (n = 18). Aberrant right gastric venous drainage and/or parabiliary venous drainage directly into the Posterior Aspect was present in 14 patients. In two patients, a tiny accompanying artery was seen on images from CT during hepatic arteriography. In seven patients with hepatocellular ca...
