The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The anterior cruciate ligament (ACL) plays important role as a preventing excessive anterior movement of the knee. When the ACL is injured, ACL reconstruction is often performed. In ACL reconstruction, bone tunnels of the femur and tibia are made for passing graft to the bone. It is reported that the bone tunnel is usually enlargement. The bone tunnel enlargement affects much knee function. In serious...
ACL (Anterior Cruciate Ligament) reconstruction is performed to recover the injured knee which often happens in sports activity such as skiing, and basketball. The ACL reconstruction makes one or two bone tunnel(s) in the femur and tibia. Then, the harvested graft passes the bone tunnels so that the femur and tibia are connected. The graft is fixed to the femur by using EndoButton. However, loosening...
In functional test of hip joint, anatomical coordinate system is user. Anatomical coordinate systems are defined by inputting landmarks manually. Therefore decision of anatomical coordinate systems includes inter-and intra-operator variability. In addition, variability of anatomical coordinate systems will affect results of diagnosis and/or cause critical error of total hip arthroplasty (THA) is operation...
Anterior Cruciate Ligament (ACL) reconstruction is performed to recover the injured knee which often happens in sports activity such as skiing, and basketball. The ACL reconstruction makes two bone tunnels in the femur and tibia. Then, the harvested graft passes the bone tunnels so that the femur and tibia are connected. The graft is fixed to the femur by using EndoButton. However, loosening of the...
The anterior cruciate ligament (ACL) plays important role as a preventing excessive anterior movement of the knee. When the ACL is injured, ACL reconstruction is often performed. In ACL reconstruction, bone tunnels of the femur and tibia are made for passing graft to the bone. It is reported that the bone tunnel is usually enlargement. The bone tunnel enlargement affects much knee function. In serious...
Determination of cup orientation is important for navigation system of total hip arthroplasty. The cup orientation is determined reference points pointed by an examiner. The pointing error can cause to mislead setting the cup. It has possibilities to induce a clinical symptom for the subject. Therefore the estimation system of affection due to the pointing error in navigation system is meaningful...
Assessing motion of the knee is essential not only for diagnosis of knee ligament injuries but also for post-operative clinical evaluations. In the assessment, resultant motion has to be evaluated according to six degrees of freedom in knee kinematics. Presently, however, these evaluations rely much on the clinicianpsilas feelings and experiences, and subjective grading is generally used. The aim...
To diagnose total hip arthroplasty (THA) patients, it is important to analyze in-vivo kinematics of the implanted hip joint. There are some conventional analysis methods for estimating the pose/position of the implanted hip joint using 2-D/3-D image registration technique for 3-D multidetector raw CT (MDCT) images and 2-D X-ray radiograph images. One of the remained problems is that estimation results...
Analyzing knee kinematics after total knee arthroplasty (TKA) has been attracting considerable attentions because the knee kinematics can be used to evaluate TKA patients and to evaluate TKA operations and design of knee implants. Knee kinematics can be estimated by 2-D/3-D image registration from 3-D computer-aided design (CAD) models of knee implants to 2-D X-ray image. Although there are many studies...
The anterior cruciate ligament (ACL) plays very important role of rotational stability of the knee function. To recover the rotational stability of the ACL injured knee, double bundle technique has been developed which drills two bone tunnels in the femur and tibia, and connects the femur with the tibia by using double bundle graft. However the double bundle technique can cause bone tunnel enlargement...
In the field of orthopedic surgery, many types of implant have been used. Especially, revision total hip arthroplasty (THA) uses a metallic implant called support implant to reconstruct the damaged acetabulum. After the revision THA, the support implant might be deformed or be broken in serious cases by the strong load or by the other factors. However, there are few effective diagnosing methods for...
Reconstruction surgery for an Anterior Cruciate Ligament (ACL) is becoming increasingly popular, due to the increase in people engaging in sport. In this surgery, four bone tunnels are drilled in the femur and tibia respectively, following which two substitute ligaments extracted from the other part of body, so called grafts, are inserted and fixed to both bones. However, although this surgery allows...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.