dr rajan's knee clinic

Whether you have just begun exploring treatment options or have already decided to undergo hip replacement surgery, this information will help you understand the benefits and limitations of total hip replacement . This article describes how a normal hip works, the causes of hip pain, what to expect from hip replacement surgery, and what exercises and activities will help restore your mobility and strength, and enable you to return to everyday activities. If your hip has been damaged by arthritis, a fracture, or other conditions, common activities such as walking or getting in and out of a chair may be painful and difficult. Your hip may be stiff, and it may be hard to put on your shoes and socks. You may even feel uncomfortable while resting. If medications, changes in your everyday activities, and the use of walking supports do not adequately help your symptoms, you may consider hip replacement surgery . Hip replacement surgery is a safe and effective procedure that can re...

Introduction In megaprosthetic knee replacement, a femoral component placed over the cut surface of the femoral shaft articulates with a tibial component placed over the cut surface of the tibial plateau [12]. The alignment of the femoral and tibial components in the coronal plane is one of the most important factors for the success of the surgery [3, 6]. In the coronal plane, the ideal femoral cutting plane is perpendicular to its anatomical axis and the ideal tibial cutting plane is perpendicular to its mechanical axis (MA) [3, 4, 7]. Deviation of the cut surface from the ideal cutting plane alignment can lead to malpositioning of the components and hence an undesirable load distribution, resulting in loosening, and ultimately failure of the surgery [7]. Specially designed cutting guides use anatomical references to determine the ideal cutting plane alignment [11, 15]. For a femoral cut, a cutting guide as shown in Fig. 1a uses the outer cortical surface (medial or lateral) as ...

Knee replacement surgery is one of the most common bone surgeries in the country. Whether you need the surgery is a decision that you and your doctor, an orthopedic surgeon, carefully make together. More than 90% of people who have had their knees replaced see a huge improvement in pain and their ability to get around. Known as arthroplasty, knee replacement surgery replaces the damaged parts of your knee with artificial parts. Several million Americans live with such implants. Deciding to Have Surgery You might get surgery for a number of reasons: Severe pain and stiffness makes it hard for you to walk, climb stairs, or get out of a chair. Nagging knee pain bothers you while resting, possibly keeping you from sleeping well. Your knee is often swollen. Your knee is bowed or has other defects. Physical therapy and medication haven’t helped. Preparing for Surgery Before you have surgery, your surgeon will take your m...

Background Anterior cruciate ligament (ACL) rupture has been implicated in the development of knee osteoarthritis (OA). This study aimed at determining the incidence of prior ACL deficiency in patients undergoing total knee replacement (TKR), the effect of prior ACL deficiency on function and the macroscopic and microscopic appearance of the ligament. Materials and methods A total of 95 patients undergoing elective TKR for OA were recruited. Pre-operative knee assessment included questionnaires and KT1000 testing. The ACL was examined macroscopically at TKR in all patients, and 10 ACL specimens were examined histologically. Results The ACL was absent in 12% of the patients. There was no significant correlation between the pre-operative assessment or function and operative findings. The ACL samples all demonstrated degenerative change of varying severities. Conclusion ACL deficiency is uncommon in patients undergoing TKR for OA, and does not worsen pre-oper...

Materials and methods Three homogeneous groups who underwent computer-assisted TKR were included in the study: group A [surgery performed by a surgeon experienced in both TKR and computer-assisted surgery (CAS)], B [surgery performed by a surgeon experienced in TKR but not CAS], and C [surgery performed by a general orthopedic surgeon]. In other words, all of the surgeons had different levels of experience in TKR and CAS, and each group was treated by only one of the surgeons. Cutting errors, number of re-cuts, complications, and mean surgical times were recorded. Frontal femoral component angle, frontal tibial component angle, hip–knee–ankle angle, and component slopes were evaluated. Results The number of cutting errors varied significantly: the lowest number was recorded for TKR performed by the surgeon with experience in CAS. Superior results were achieved in relation to final mechanical axis alignment by the surgeon experienced in CAS compared to the other surgeons. Ho...