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Biomedical subjects

P Mamoudy

Publications and source records attributed to P Mamoudy.

15 recordsLinked to original sources
PubMed2006

[Results of reimplantation for infected total knee arthroplasty: 107 cases].

PURPOSE OF THE STUDY: The purpose of this study was to assess the results of reimplantations of total knee arthroplasties complicated by infection. Outcome was assessed in terms of eradicated infection and function. MATERIAL AND METHODS: This retrospective multicentric study included 107 cases of infected total knee arthroplasties treated by changing the implants. Seventy-seven patients had a two-stage revision and thirty had a one-stage procedure. Patients were reviewed with a minimal 2-year and an average 52-month follow-up. RESULTS: Revision arthroplasty (one- or two-stage) eradicated infection in two out of three patients. With a two-year follow-up, revision arthroplasty was successful in 77% of patients without any sepsis risk factor, in 65% of patients with one risk factor and in 33% of patients with at least two risk factors. After reimplantation for total knee arthroplasty infection, overall function outcome was good (KS knee score: 74.8 after two-stage revision and 75.5 after one-stage revision, NS). After two-stage procedures, the knee outcome was excellent in one-third of patients, good in another third and fair or poor in the final third. After one-stage reimplantation, 40% of the knees had an excellent outcome, 30% a good outcome and 30% a fair or poor outcome. Regarding functional outcome, overall results were fair (KS function score 62.5 for one-stage and two-stage revisions). Functional outcome was fair or poor in 42% of patients with a two-stage procedure and in 55% of patients with a one-stage revision (NS). DISCUSSION: Our study was unable to disclose any difference between one-stage and two-stage revision for eradicating infection. Unfavorable systemic and local conditions decreased the rate of success after revision total knee arthroplasty for infection. Length of infection before reimplantation, number of surgical procedures and bacterial virulence or resistance were not, in our series, predicting factors for failure of septic revision total knee arthroplasty. No difference was found for the clinical and functional results between one-stage and two-stage procedures. Functional outcome was fair or poor for half of the patients after septic revision total knee arthroplsty. The use of an external device between the two procedures for two-stage revision significantly decreased the functional outcome compared with the use of a spacer. Articulated spacers did not offered any advantage compared with a static spacer for functional outcome.

Adolescent↗
PubMed1994

[Coxitis after surgical excision of intracapsular osteoid osteoma of the femur neck].

A case of destructive arthropathy of the hip with onset two years after surgical removal of an intracapsular osteoid osteoma of the femoral neck is reported. Coincidental occurrence in the same joint of an osteoid osteoma and a destructive arthropathy of unknown etiology cannot be ruled out. However, another hypothesis which deserves discussion is that self-perpetuating synovitis was triggered by the release of mediators of inflammation due to presence of the osteoid osteoma.

Adult↗
PubMed1986

[Traumatic atlanto-occipital luxation. Value of new radiologic signs (apropos of 2 cases)].

Two cases atlanto-occipital dislocation with survival are reported. The displacement was anterior. One case was associated only with some pyramidal signs and was diagnosed fourteen months after the injury. The other was associated with immediate tetraplegia. Both cases were treated by occipitocervical fusion with plate fixation. The second case was reduced during operation. A review of the literature has shown that dislocation with anterior displacement is more severe than with posterior displacement. The diagnosis is always difficult. The authors show the importance of certain radiological signs such as the curved anterior line joining the odontoid process to the occiput. The need to reduce the displacement in old lesions is discussed.

Adolescent↗
PubMed1983

[Biopsy of the vertebral body using a posterior transpedicular approach].

The technique of biopsy of the vertebral body through a posterior approach passing through the pedicle was first reported in 1963. A description of the technique is given. The importance of good radiological control is stressed. Biopsy can be made with a curette once the approach has been made with a drill. The results were positive in 46 cases out of 47. A false negative was found on only one occasion.

Biopsy↗
PubMed1982

[Lateral atlanto-axial arthrodesis (author's transl)].

The authors describe the surgical technique of atlanto-axial fixation using a bilateral lateral approach. The cartilage of the articular processes of C1 and C2 are excised and the joints grafted. A screw fixation of the articular processes is performed. 8 cases are reported.

Arthrodesis↗
PubMed1981

[Total excision of thoracic vertebrae (author's transl)].

The authors believe that it is not possible to remove a thoracic vertebra completely by a lateral transthoracic approach. They have operated on three patients in which a thoracic vertebra has been removed completely using an extended posterior approach. The technique described utilizes an extra-pleural bilateral thoracotomy through a single posterior incision. The posterior mediastinum is mobilised and the vertebral bodies freed. The technique is indicated in tumours of the spine compressing or threatening the spinal cord, especially primary local malignant tumours or where adjuvant treatment such as radiotherapy, chemotherapy or radio active drugs are effective. Benign but recurrent tumours such as giant cell tumours or aneurysmal bone cysts are also good indications for this method.

Adult↗