Experimental Study of Cryopreserved Meniscus Allograft in Rabbit / 대한정형외과학회잡지

To examine the fate of cryopreserved meniscus used as orthotopic allograft on alternative to total removal of menisci, the authors have performed replacement of medial meniscus with cryopreserved one which had been preserved at −70℃ for 7 days in right side and with fresh autograft without cryopreservation in left side as a control group.Transplanted menisci were sampled at 4, 8, 12 ,16 weeks, postoperatively to observe their gross and histological findings. At 4 weeks, the allograft was healed to the perioheral capsular tissue and meniscal horn attachments of the host by fibrovascular scar tissue retained their normal appearance in gross findings. It showed an increased cellularity immediately adjacent to its peripheral attachment covered by the vascularized synovial tissues. At 8 weeks, it showed even distribution of cellularity in histological finding. At 12 weeks, gross findings of mild shrinkage and degeneration were seen and those were covered by both synovial and connective tissue with regenerated chondrocyte in histological findings. At 16 weeks, a little difference between allograft and normal meniscus was showed in gross and histological findings. There are regenerated chondrocytes in the deep area some degenerative changes were noted in the tibial and femoral cartilage not covered by meniscus. Above results showed cryopreserved meniscal allograft was able to regenerate and clinically suggest good treatment modality in case of unable to reshape to normal structure after total meniscectomy.

Radiological Analysis of the Proximal Femoral Geometry in Korean Adults and the Design of the Cementless Femoral Stem / 대한정형외과학회잡지

We analyzed the endosteal morphology of the proximal femur in 300 Korean adults radiologically and assessed the proximal canal filling of the cementless anatomic stem in 100 patients with imaging analysis system. The cases were divided in six groups, according to age by the decades. The canal flare indices were 4.20, 3.82, 3.47, 3.40, 3.34 for each age group from third to eighty decades respectively. The shape of proximal cannal in the 300 cases, showed 234 cases(78%) to be normal, while 30 cases(10%) in the Stovepipe configuration and 36 cases(12%) in the Champagne flute appearance. The proximal canal filling rate in an AP view radiologically measured from the level of the lesser trochanter to 2cm distal to the lesser trochanter in 100 patients with cementless anatomic stem were s follow : 60 to 69% range in 9 cases(9%), 70 to 79% in 58 cases(58%), 80 to 89% in 31 cases(31%) and 90 to 100% in 2 cases(2%). With regard to the suitability of cementless femoral components, anatomic fitting, distal fitting, proximal fitting, undersized stem were 66%, 23%, 5%, 6%, respectively. It is difficult to achieve the optimal anatomic fitting to the femoral cannal with one design of the cementless femoral stem, because of the greater variation of proximal femoral anatomy in normal population.

Multiple basal cell carcinoma associated with keratoacanthoma

We report a case of multiple basal cell carcinoma associated with keratoacanthoma. A 65-year-old Korean female had suffered from multiple, variable-sized papules and nodules on the face for 20 years previous to treatment. She had no history of arsenic intake, irradiation, herb medication, or hereditable or preexisting dermatoses. Histopathologically, the tumors revealed typical findings of solid and adenoid types of basal cell carcinoma and keratoacanthoma.