Biomedical subjects
Publications and source records attributed to G Dendrinos.
The twenty-fifth reported case of survival following traumatic hemipelvectomy is presented. Our patient is the fourth female survivor and the second who escaped associated injuries to either the genito-urinary system or the rectum.
A very rare fracture-dislocation of thoracic vertebrae without associated neurological injury is presented. Damage to the spinal cord was avoided because of the nature of the fracture which occurred through the posterior elements and which allowed anterior slipping of the anterior elements and hence widening of the spinal canal.
This study discusses the difficulties in making the diagnosis of bone and joint tuberculosis and underlines the diagnostic value of tissue biopsy from the site of the suspected tuberculosis lesion. Fifty-two patients, suffering from this disease, underwent treatment at our hospital between 1980-1986. In 27 cases (51%) the diagnosis was made on the basis of the clinical picture and various tests not including biopsy. The other 25 cases (48%) required a biopsy, and tissue specimens were sent for histological examination and culture with the Löwenstein-Jensen medium. In 9 (17.3%) patients the biopsy was performed early, while in another 16 (30.8%) patients there was a delay (23 months on average). From the total of 25 biopsies the histological examination showed findings compatible to tuberculosis in 23 (92%), while the culture of the same material was positive only in 10 (40%). The high rate of diagnostic accuracy with the biopsy, proves that this method is probably the most useful one for the diagnosis of bone and joint tuberculosis and emphasizes the need to use this method more often.
A prospective study of the Ring Total Knee Replacement is presented. The senior author (P.A. Ring) designed this prosthesis and began to apply it clinically in 1974. The Ring prosthesis is a resurfacing, unconstrained type of knee prosthesis and is designed for use without cement. It comprises two components, femoral and tibial, both made of titanium. A polyethylene liner is attached to the tibial component. The method was used for treatment of osteoarthritis and rheumatoid arthritis of the knee on 149 patients (178 knees) in the period from 1974 to 1985. Seventeen patients were lost to follow-up, leaving 132 patients (161 knees) for review. During the last review, 75.2% of the knees were pain free and 72% had full correction of the deformity. The average follow-up period was 5.1 years and the survival rate of the prosthesis during the same period was 94.4%. To evaluate the method we used computer analysis of preoperative and postoperative assessment cards with 153 observations. The result was excellent in 92 (57.2%) knees, good in 38 (23.6%) knees, and poor in 31 (19.2%) knees. Loosening of the components occurred in 3.7% knees, and the total revision rate was 5%. One knee was arthrodesed.
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