Cases reported "Cadaver"

Filter by keywords:



Filtering documents. Please wait...

1/71. Initial experience with processed human cadaveric allograft skin for reconstruction of the corpus cavernosum in repair of distal extrusion of a penile prosthesis.

    We describe our initial experience with the novel application of processed human cadaveric allograft skin in reconstruction of a damaged corpus cavernosum associated with distal extrusion of a penile prosthesis. The material was evaluated for ease of reconstruction, adequacy of repair, and outcome. Human processed dermis allograft requires no intraoperative harvesting, is technically easy to fashion, and offers adequate tensile strength in the reconstruction of damaged corpora cavernosa. This initial experience with processed human cadaveric dermis in reconstruction of damaged corpora cavernosa is encouraging. Further evaluation to define the long-term efficacy and scope of application of this material in urologic reconstructive procedures is warranted.
- - - - - - - - - -
ranking = 1
keywords = operative
(Clic here for more details about this article)

2/71. A new technique for determining proper mechanical axis alignment during total knee arthroplasty: progress toward computer-assisted TKA.

    Successful total knee arthroplasty (TKA) relies on proper positioning of prosthetic components to restore the mechanical axis of the lower extremity. This report presents and analyzes a new noninvasive method using the Optotrack (Northern Digital Inc, ontario, canada) to accurately determine the center of the femoral head. This method, together with direct digitization of the bony landmarks of the knee and ankle intraoperatively, permits placement of the lower extremity in proper alignment intraoperatively. It also permits the surgeon to follow all the angles of movement or rotation and all displacements that occur at each step of the operative procedure. knee intraoperatively via a customized Windows-based program. In addition to presenting our first case, which, importantly, represents the first computer-assisted TKA in a patient, we report on the accuracy and reproducibility of the technique for locating the center of the femoral head obtained during an extensive series of cadaver studies. Location of the femoral head, a major aspect of effecting neutral mechanical axis alignment, appears to be possible to within 2-4 mm, which corresponds to an angular accuracy of better than 1 degree. This method requires no computed tomography scans or other preliminary marker placement. The only basic requirement other than the instrumentation described is a freely mobile hip, which is generally present in TKA patients.
- - - - - - - - - -
ranking = 4
keywords = operative
(Clic here for more details about this article)

3/71. First case of cadaveric liver transplantation in japan.

    The first case of liver transplantation from a brain-dead donor in japan is described. The recipient was a 43-year-old man with familial amyloid polyneuropathy who manifested various neuropathic symptoms and autonomic dysfunction at the time of transplantation. The graft had three arteries, for which a single trunk was created at the back table. A side-to-side cavacaval anastomosis was performed as an outflow reconstruction. To avoid portal congestion, a temporary shunt between the right posterior branch of the portal vein and the vena cava was constructed, instead of a venovenous bypass. The graft preservation time was 7.2 h and the operation time was 12.2 h. Although sufficient blood flow in the hepatic artery, portal vein, and hepatic vein was confirmed intra- and postoperatively, using Doppler ultrasound, transient graft dysfunction was observed immediately after surgery, but there was spontaneous improvement. The patient was discharged 100 days after transplantation.
- - - - - - - - - -
ranking = 1
keywords = operative
(Clic here for more details about this article)

4/71. Intraoperative imaging of the tibial plafond fracture: a potential pitfall.

    STUDY DESIGN: Human tibial plafond cadaveric specimens were coronally sectioned and imaged to assess the accuracy of evaluation of ankle joint line congruity using anteroposterior radiography. Two interesting representative clinical cases are discussed. OBJECTIVES: To evaluate the validity of the routine use of anteroposterior radiographs to evaluate intra-operative ankle joint line congruity in circumstances where lateral radiographs are infeasible due to obscuring internal or external hardware. methods: Eleven frozen human cadaveric lower extremity specimens were used in this study. At the level of the tibial plafond, the specimens were sequentially sliced into 0.5cm sections in the coronal plane. True anteroposterior radiographs were taken with the specimen en bloc. Sequentially, the posterior slices were removed one by one, with an image taken after removing each section. The process was then repeated by removing the anterior sections sequentially with intervening radiographs. Each series of anteroposterior radiographs was then evaluated to characterize which portion of the joint line on the whole specimen view had been contributed by each of the sections. This then allowed us to make inferences about the evaluation of the joint line if it had been derived solely by anteroposterior radiography. Two poignant clinical cases demonstrating the clinical relevance of this information are discussed. RESULTS: By sequentially imaging after removing coronal sections of the tibial plafond we were able to accurately characterize the contribution of each portion of the plafond to the overall anteroposterior view. By primarily imaging the anterior portions of the plafond, with the posterior portions removed, the joint line image was virtually unchanged from the en bloc anteroposterior radiograph. However, removal of the anterior coronal sections caused large variation in the joint line image. These observations demonstrate that the anteroposterior radiograph of the tibial plafond characterizes the anterior portion of the joint well, while it represents a poor assessment of the posterior portion of the joint. This was well illustrated in our clinical case presentations. CONCLUSION: In severe fractures of the tibial plafond multiple forms of internal and external devices are frequently used for fixation. In these circumstances hardware may obscure the lateral view making it impossible to obtain adequate lateral radiographs to assess fracture reduction and joint line congruity. In this scenario, the anteroposterior radiograph is frequently relied upon to confirm the anatomic relationship of the displaced fragments. However, this view fails to accurately characterize reduction in the entire joint line and, intra-operatively, may mislead the surgeon to accept a reduction as anatomic when intra-articular incongruity still exists. Strict attention to pre-operative radiographs and the use of additional rotated views may aid the surgeon in this setting to assess fracture reduction and joint line congruence.
- - - - - - - - - -
ranking = 7
keywords = operative
(Clic here for more details about this article)

5/71. Successful transplantation of a cadaveric kidney with post-infectious glomerulonephritis.

    This report describes a successful renal Tx in a patient with chronic renal failure, caused by dysplastic kidneys, who received a cadaveric kidney with post-infectious glomerulonephritis. Sequential renal biopsies were performed at 12 h before Tx, and at 1 h and on days 8 and 58 post-Tx. Post-operative hematuria disappeared on day 9 and proteinuria on day 13. Normal graft function was observed within 1 month, with histologic resolution. Our study suggests that while the donor kidney facilitates deposition of certain immune reactants, this is a host (environmental) problem and when transplanted into a new host (new environment), the problem is no longer sustained.
- - - - - - - - - -
ranking = 1
keywords = operative
(Clic here for more details about this article)

6/71. Case study of paired cadaver renal allografts from the same donor: influence of local DIC kidney and concomitant acute rejection on early graft outcome.

    We report the clinical course of 2 recipients whose renal allografts were obtained from the same cadaver donor after cardiac arrest. The recipients showed different outcomes after transplantation. Graft biopsy after reperfusion revealed disseminated intravascular coagulation (so-called DIC kidney) and severe acute tubular necrosis (ATN) in both recipients. While one graft showed primary nonfunction, the other graft became functional after a post-operative anuric period. Serial graft biopsies performed during the oligo-anuric period revealed recovery of ATN and no intra-glomerular fibrin thrombi, but development of acute rejection was detected in both recipients. The left kidney graft showed more severe local DIC kidney than the right kidney, as well as more severe acute rejection in the oligo-anuric period. Despite aggressive anti-rejection therapy, the left kidney graft showed primary nonfunction. Therefore, severe acute rejection leading to primary nonfunction might have been related to more severe ischemic injury and more extensive local DIC kidney in the left kidney.
- - - - - - - - - -
ranking = 1
keywords = operative
(Clic here for more details about this article)

7/71. A keyhole approach for endoscopically assisted pedicle screw fixation in lumbar spine instability.

    OBJECTIVE: The standard approach for dorsal transpedicular fixation in lumbar spine instability requires extensive exposure of the vertebral column. This increases the risk of potential complications and possibly destabilizes healthy neighboring segments because of the dissection and denervation of paravertebral muscles. The majority of spinal disorders are currently treated successfully via limited and tailored approaches. Accordingly, a keyhole approach for dorsal fusion of the lumbar spine was developed on the basis of an anatomic study. methods: The new endoscopic technique entails the transmuscular insertion of a pedicle screw-rod fixation device via a rigid operating sheath. As a prerequisite, the endoscopic microanatomy of the target area, as visible through the operating sheath, was first evaluated on lumbar bone specimens. To localize the exact screw entry point into the pedicle, we identified the bony and ligamentous landmarks on partly macerated specimens. To determine the course of the pedicle screws, we deduced the corresponding angles of convergence from transparent polyester casting models of average vertebrae from T12 to S1. These angles were transferred into the operative situation and measured on-line with an inclinometer. The approach was finally tested on 12 cadavers for clinical feasibility and accuracy of screw placement and then successfully implemented in patients. RESULTS: After extracutaneous localization of the pedicles at lateral fluoroscopy, paramedian skin incisions were made above the pedicles of the motion segment to be stabilized. The operative windows were exposed by use of a rigid operating sheath (length, 50 mm; diameter, 15 mm), which was inserted transmuscularly in the pedicle axis. The screw entry point into the pedicles was localized by endoscopic dissection of the mamilloaccessory ligament, bridging the mamilloaccessory notch. The pilot holes were created via insertion of a blunt-tipped pedicle probe. The adequate angles of convergence were constantly controlled during hollowing of the pedicles by an inclinometer mounted to the pedicle probe handle. The pedicle screws were then inserted through the operating sheaths. After removal of the operating sheaths, the connecting rods were inserted transmuscularly and anchored in the pedicle screw heads. Posterior bone grafting was performed after completion of the dorsal instrumentation. The dorsal fusion site was exposed by reinserting the operating sheath and tilting it medially. CONCLUSION: This new approach significantly reduces surgical traumatization and destabilization of adjacent motion segments. An endoscopic operating sheath, adopted from thoracoscopic surgery, creates space for visualization and surgical manipulations. The newly defined anatomic landmarks provide guidance to the screw entry point into the pedicle in the center of the exposure. observation of the exact corresponding angles of convergence during screw insertion by an inclinometer facilitates correct screw placement. In accordance with the initial anatomic studies, this approach was successfully performed on 12 cadavers and then used in six patients. Two illustrative cases are presented.
- - - - - - - - - -
ranking = 2
keywords = operative
(Clic here for more details about this article)

8/71. Secondary fractures of Le Fort I osteotomy.

    PURPOSE: To report the ophthalmic complications of Le Fort I osteotomy for the correction of dentofacial deformities and to determine the maximal compressive loads applied during pterygomaxillary separation in a cadaver model. methods: Two cases of ophthalmic complications arising after Le Fort I osteotomy are reported. Le Fort I osteotomy was performed on five cadavers. The maximal compressive load applied during pterygomaxillary separation was recorded with a 10 kN (3,000 lbf) load cell of a MTS Mini-Bionix servo-hydraulic machine (MTS, Eden Prairie, MN, U.S.A.). A paired t test was used to compare forces applied to the right and left sides. Computed tomography scans of each specimen were obtained after Le Fort I osteotomy to document secondary fractures. The skulls were subsequently stained with 1% fuschin red to highlight secondary fractures. RESULTS: Maximum compressive loads during pterygomaxillary separation ranged from 22 N (5.0 lbf) to 162 N (36.5 lbf), with an average of 106 N (23.8 lbf) (SD 47.6 N [10.7 lbf]). Forces applied on the first operative side were significantly greater than forces applied on the second operative side (p = 0.0034). Secondary fractures were found in three specimens by computed tomography and in two specimens by 1% fuschin red. All secondary fractures occurred on the second operative side. CONCLUSION: Secondary fractures in the Le Fort I osteotomy procedures occurred on the side opposite the greater maximal compressive load and on the second operative side.
- - - - - - - - - -
ranking = 4
keywords = operative
(Clic here for more details about this article)

9/71. Aortocoronary vein graft surgery in a cadaver kidney transplant recipient.

    A case of Prinzmetal angina occurred in a recipient of a cadaver kidney transplant who was treated with aortocoronary vein graft. The patient had severe retrosternal chest pain associated with ST-segment elevation in the precordial leads. Coronary arteriograms disclosed two major lesions in the proximal anterior descending artery. Aortocoronary vein graft was successfully performed with no untoward effect on the renal status. The patient has been free of angina approximately two years postoperatively.
- - - - - - - - - -
ranking = 1
keywords = operative
(Clic here for more details about this article)

10/71. Domino hepatic transplantation using the liver from a patient with primary hyperoxaluria.

    BACKGROUND: We report a case of domino liver transplantation using the liver harvested from a patient who underwent a combined liver and kidney transplantation for primary hyperoxaluria (PH). METHOD: A cadaveric liver transplantation was performed in a 19-year-old man with PH. In a second step, the PH liver harvested from the first patient was transplanted in a 69-year-old man with hepatitis c-related cirrhosis, not a candidate for a classic liver graft owing to multifocal hepatocellular carcinoma. RESULTS: At 8 months after transplantation, the domino recipient has normal hepatic function and no signs of tumoral recurrence, but he progressively developed hyperoxalemia, hyperoxaluria, and renal insufficiency. CONCLUSION: Regarding the favorable postoperative clinical evolution, domino liver transplantations using livers from PH patients may represent a new opportunity for marginal candidates for liver transplantation. However, the progressive renal insufficiency expected in such domino recipients should limit this procedure to selected cases.
- - - - - - - - - -
ranking = 1
keywords = operative
(Clic here for more details about this article)
| Next ->


Leave a message about 'Cadaver'


We do not evaluate or guarantee the accuracy of any content in this site. Click here for the full disclaimer.