The effect of distance between hole and hole to the structural stability of subchondral bone in the microfracture surgery

Articular cartilage rarely shows spontaneous healing from defects, regardless of whether the defects are acute, chronic, or degenerative in nature. Several techniques for the treatment of articular cartilage defects have been described recently with varying results and indications. microfracture represents a frequently used technique used to attempt repair of symptomatic articular cartilage defects of the knee. Recent studies point towards the advantage of greater cell drainage after exposure of subchondral bone layer shoud affect the biomechanical property the overall subchondral bone. We hypothesis distance between hole and hole is will be correlated with the structural stability subchondral bone, in the microfracture surgery. In this study, we finite element analysis tool(i.e., COMSOL) is using analyzed effect on structural stability subchondral bone in microfracture procedure. To construct a more general simplified model of the femoral condyles was determined from a micro-CT scan of the TKC knee. The diameter of the femoral ellipsoidal condyle were 13 mm. Bones were considered 8 mm from the contact plane in Femur. Cortical bone thickness was 0.3 mm, the rest being cancellous bone. Load was assumed to be axial, i.e., normal to the bottom plane of the tibia. In the model of two-legged stance, assuming a bodyweight of 70 kg, a total force of 188.65 N was chosen and applied on the top surface of the femoral bone. The von mises sress of models were analyzed using the FE software COMSOL program. imaginary model results with comparison execute the finite element analysis as close to the actual implementation of the 3-D model the micro-CT image by using to assess results of imaginary model. In this study, the Finite element method was used to analyse the effect on structural stability subchondral bone in micro-fracture procedure. Virtual models and simulationapproaches using computer and it's application to finite element analysis have been utilized to overcome these problems. The 3-D FEA was done using optimal and detailed3-D subchondral bone model from micro-CT images. Although the micro-CT imagebased on a finite element modeling could not separate between subchondral plate and trabecular bone, this did not affect the final results. Thus, we speculated that there is no difference in dynamics in resulting from hole number of microfracture if sub-chondral plate is not broken. In this through the results, we are present be able to do is expected to be requisite references and epidemiological evidence when determining distance between the hole and hole in microfracture procedure.

Author dc:creator

• YIN, XIANGYUN

Contributors dc:contributor

• 민, 병현
• 대학원 의학과
• 201224372

• 미세골절술
• 미세단층촬영기
• 유한요소방법
• 연골하골
• microfracture
• finite elements method
• micro-CT
• subchondral bone

Language dc:language

ko

Identifier

http://dcoll.ajou.ac.kr:9080/dcollection/jsp/common/DcLoOrgPer.jsp?sItemId=000000017550
000000017550

OAI identifier oai:identifier

oai:repository.ajou.ac.kr:201003/10927