Biomedical subjects

C H Kavolus

Publications and source records attributed to C H Kavolus.

3 recordsLinked to original sources

PubMed1991

The total condylar III knee prosthesis in elderly patients.

Sixteen knee arthroplasties using a total condylar III prosthesis were performed in 14 patients with an average follow-up period of 4.5 years and a minimum follow-up period of 3 years. Eleven of the sixteen knee arthroplasties were revision prostheses. The average age was 71 year, with all but three patients being 69 years of age or older. In this age group, fifteen of sixteen implants had a good to excellent Hospital for Special Surgery (HSS) knee score at the most recent follow-up evaluation. One patient had a fair score, the result of a remote postoperative proximal tibial fracture, and requires a long leg brace for ambulation.

Aged↗

PubMed1991

Survivorship of cementless total knee arthroplasty without tibial plateau screw fixation.

Seventy-two cementless tricompartmental total knee arthroplasties were performed in 47 patients using a porous-coated prosthesis without screw fixation for the tibial components between 1984 and 1986. These individuals were observed at regular intervals for a minimum of three years. Their Hospital for Special Surgery pain and function scores as well as roentgenographic signs of anatomic alignment and subsidence were evaluated at six months, one year, and three years postoperatively. The roentgenographic evaluation for subsidence looked at a measurable difference in the anteroposterior roentgenograph on the medial and lateral plateaus and on the lateral roentgenograph anteriorly and posteriorly. Early postoperative interpretations have suggested pain and knee scores to be much lower than scores in the cemented prosthesis. Reassessment after three years, however, revealed no further deterioration of the noncemented prosthesis in respect to knee scores and survival analysis. Roentgenographic analysis showed no correlation between subsidence and alignment alterations, subsidence and time, or subsidence and pain. It appears that after an initial period of discomfort, the noncemented knee can achieve a functional, clinical, and roentgenographic result much better than previously anticipated. The consequences beyond this time period still remain unknown.

Aged↗

PubMed1990

A radiographic analysis of a straight-stemmed uncemented femoral component and hemispheric porous-coated acetabular component in total hip arthroplasty.

A radiographic examination of 91 uncemented hemispheric titanium alloy acetabular components and 85 straight-stemmed titanium alloy femoral components was performed. Analysis included zonal radionuclides, migration, bone changes, and fit. Correlation of these parameters were made. Acetabular radiolucencies were common in zone 3 but none were progressive; also, they were unrelated to number and position of screws. Two acetabuli were considered to demonstrate loosening. Femoral changes of calcar atrophy, distal cortical hypertrophy, and distal femoral capping were independent of bone type and distal fit. One component subsided. Proximal radiolucency occurred in three patients, all on the lateral surface. Bony changes around the prostheses were statistically not related to bone type.

Adult↗