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Arthrogram, Hip | Radiology Key

Arthrogram in hip prosthesis.

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08/12/2017 · Arthrography in total hip prosthesis ..

The recent popularity of ingrowth or uncemented hip arthroplasties has presented problems in the radiographic diagnosis of loosening because there is no longer a cement interface in which lucencies may be seen. We evaluated a combination of positive contrast and nuclear arthrography to see whether these studies could accurately detect loosening of uncemented femoral components of hip prostheses. We performed routine contrast and nuclear arthrography in 21 patients with ingrowth total hip arthroplasties or bipolar endoprostheses. The results were surgically confirmed in 12 patients. The contrast arthrogram was true positive in 5 and false negative in 5. There were no false positives and 2 true negatives. The nuclear arthrogram was true positive in 7 patients, false negative in 3, and true negative in 2. Taken together, there was only 1 patient in whom both contrast and nuclear arthrography were false negative, and there were no false positives. Thus, when either contrast or nuclear arthrography is positive, the sensitivity of the combined procedures is 90%; when both studies are negative, the specificity is 100%. The combination of contrast and nuclear arthrography is an accurate method of determining loosening of the femoral component of an uncemented hip arthroplasty or bipolar endoprosthesis in the patient with postoperative hip pain.

Arthrography in total hip prosthesis complications.

Tears of the labrum at the back of the hip (posterior) are unusual but may cause pain felt deep in the buttock.
The best investigation for diagnosing a labral tear is undoubtedly an MRI scan with or without intrarticular gadolinium (a contrast agent injected into the joint).
Assymptomatic (non painful) tears identified on MRI scan and tears associated with significant osteoarthritis do not require any specific treatment.

Arthrography in loosened hip prostheses. Assessment …

Arthrography in loosened hip prostheses

N2 - Arthrography is indicated for the evaluation of a prosthetic joint for suspected infection, possible loosening based on clinical or plain radiographic findings, or unexplained pain following the insertion of a prosthesis. Interpretative difficulties most frequently occur when the acetabular component of the hip is evaluated. Also, the femoral component of a total knee arthroplasty is not optimally evaluated with arthrography. The decision to revise a loose prosthetic component is based on a clinical judgment. Arthrographic findings may facilitate this decision, but the decision does not depend solely on the arthrographic results. Rather, they must be evaluated in conjunction with other clinical and radiographic findings to eliminate false positive studies, thereby avoiding unnecessary surgery. In the presence of an equivocal arthrogram, radionuclide bone imaging shows promise as an adjunct for evaluating possible failure of a prosthetic component. It is also useful for evaluating the suspected failure of the femoral component of a knee prosthesis.

AB - Arthrography is indicated for the evaluation of a prosthetic joint for suspected infection, possible loosening based on clinical or plain radiographic findings, or unexplained pain following the insertion of a prosthesis. Interpretative difficulties most frequently occur when the acetabular component of the hip is evaluated. Also, the femoral component of a total knee arthroplasty is not optimally evaluated with arthrography. The decision to revise a loose prosthetic component is based on a clinical judgment. Arthrographic findings may facilitate this decision, but the decision does not depend solely on the arthrographic results. Rather, they must be evaluated in conjunction with other clinical and radiographic findings to eliminate false positive studies, thereby avoiding unnecessary surgery. In the presence of an equivocal arthrogram, radionuclide bone imaging shows promise as an adjunct for evaluating possible failure of a prosthetic component. It is also useful for evaluating the suspected failure of the femoral component of a knee prosthesis.

In six patients there was an arthrogram after primary hip ..

Contrast and nuclear arthrography in loosening of the uncemented hip prosthesis

Arthrography is indicated for the evaluation of a prosthetic joint for suspected infection, possible loosening based on clinical or plain radiographic findings, or unexplained pain following the insertion of a prosthesis. Interpretative difficulties most frequently occur when the acetabular component of the hip is evaluated. Also, the femoral component of a total knee arthroplasty is not optimally evaluated with arthrography. The decision to revise a loose prosthetic component is based on a clinical judgment. Arthrographic findings may facilitate this decision, but the decision does not depend solely on the arthrographic results. Rather, they must be evaluated in conjunction with other clinical and radiographic findings to eliminate false positive studies, thereby avoiding unnecessary surgery. In the presence of an equivocal arthrogram, radionuclide bone imaging shows promise as an adjunct for evaluating possible failure of a prosthetic component. It is also useful for evaluating the suspected failure of the femoral component of a knee prosthesis.

Radiographie arthrography and bone scintigraphy are common diagnostic procedures used for evaluating total hip prostheses. In this study, both techniques are combined, and nuclear contrast imaging (nuclear arthrography) is added. The efficacy of the procedures is evaluated. Methods: After intravenous injection of ""Tc-methylene diphosphonate (MDP), standard radiographie arth rography was performed in 105 patients (107 prostheses). Theradiographie contrast medium was mixed with insoluble ''"In-colloid (5 MBo/20 ml). After completion of the radiographie arthrog raphy, nuclear arthrography was performed, and multiple-view dual-isotope images (111ln,247-keV peak only) were recorded. Images were interpreted by superposition of the 111ln image and the corresponding ""Tc-MDP image, the latter serving as a landmark for the position of the prosthesis and osseous structures. Findings at surgery were used as the gold standard. Results: In both cemented and uncemented acetabular and femoral components, nuclear arth rography performed better than or equal to radiographie arthrogra

et al: Contrast and nuclear arthrography in loosening of the unce- mented hip prosthesis
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01/02/2006 · A lucency at the metal-cement ..

It can also occur after a sudden injudicious movement.When dislocation occurs the patient is aware of sudden pain within the hip joint and an inability to put weight on the affected lower limb.The hip needs to be relocated with full muscle relaxation and more often than not requires a general anaesthetic.

The arthrogram is used to confirm intra ..

AB - The recent popularity of ingrowth or uncemented hip arthroplasties has presented problems in the radiographic diagnosis of loosening because there is no longer a cement interface in which lucencies may be seen. We evaluated a combination of positive contrast and nuclear arthrography to see whether these studies could accurately detect loosening of uncemented femoral components of hip prostheses. We performed routine contrast and nuclear arthrography in 21 patients with ingrowth total hip arthroplasties or bipolar endoprostheses. The results were surgically confirmed in 12 patients. The contrast arthrogram was true positive in 5 and false negative in 5. There were no false positives and 2 true negatives. The nuclear arthrogram was true positive in 7 patients, false negative in 3, and true negative in 2. Taken together, there was only 1 patient in whom both contrast and nuclear arthrography were false negative, and there were no false positives. Thus, when either contrast or nuclear arthrography is positive, the sensitivity of the combined procedures is 90%; when both studies are negative, the specificity is 100%. The combination of contrast and nuclear arthrography is an accurate method of determining loosening of the femoral component of an uncemented hip arthroplasty or bipolar endoprosthesis in the patient with postoperative hip pain.

In the hip – to show any tear of the cartilage labrum ..

N2 - The recent popularity of ingrowth or uncemented hip arthroplasties has presented problems in the radiographic diagnosis of loosening because there is no longer a cement interface in which lucencies may be seen. We evaluated a combination of positive contrast and nuclear arthrography to see whether these studies could accurately detect loosening of uncemented femoral components of hip prostheses. We performed routine contrast and nuclear arthrography in 21 patients with ingrowth total hip arthroplasties or bipolar endoprostheses. The results were surgically confirmed in 12 patients. The contrast arthrogram was true positive in 5 and false negative in 5. There were no false positives and 2 true negatives. The nuclear arthrogram was true positive in 7 patients, false negative in 3, and true negative in 2. Taken together, there was only 1 patient in whom both contrast and nuclear arthrography were false negative, and there were no false positives. Thus, when either contrast or nuclear arthrography is positive, the sensitivity of the combined procedures is 90%; when both studies are negative, the specificity is 100%. The combination of contrast and nuclear arthrography is an accurate method of determining loosening of the femoral component of an uncemented hip arthroplasty or bipolar endoprosthesis in the patient with postoperative hip pain.

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