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Showing 1 to 20 of 25 for “"knee kinematics"”.
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4D CT based analysis of knee kinematics
Introduction: Total Knee Arthroplasty, which is the last resort of treatment for osteoarthritis, is aimed at restoring the functional anatomy of the knee. Despite the recent improvements in surgical techniques, limited range of motion, postoperative instability and malalignment still hinder the …
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Assessment of Normal Knee Kinematics Using High-Speed Stereo-Radiography System
<p>The measurement of dynamic joint kinematics in vivo is important in order to understand the effects of joint injuries and diseases as well as for evaluating the treatment effectiveness. Quantification of knee motion is essential for assessment of joint function for diagnosis of pathology, such …
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In vivo Knee Kinematics and Cartilage Recovery of Noncontact Anterior Cruciate Ligament Injuries
… (ACL) injuries are one of the most common knee injuries. Unfortunately, the prevention programs have not significantly reduced these traumatic injuries, and debilitating repercussions (i.e. pain, meniscal degeneration, post-traumatic osteoarthritis) occur even after reconstructive or …
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The Relationship between Dorsiflexion Range of Motion and Knee Kinematics in a Land-and-Jump Task
… dorsiflexion range of motion and frontal knee kinematics at initial ground contact and maximal knee flexion in a land-and-jump task. Thirteen male participants (age = 23 + 2.35 y, height = 181.4 + 5.68 cm, mass = 84.5 + 17.2 kg) proficient in landing and jumping techniques and free from …
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The Influence of Heel Height on Sagittal Plane Knee Kinematics during Landing Tasks in Recreationally Active Collegiate Females
… to athletic shoe wear would alter sagittal plane knee kinematics when landing from jumping maneuvers. The hypothesis was that increased heel height would increase knee flexion at initial contact (KAIC), increase the peak knee flexion angle (KAPeak), and slow the rate of knee excursion (RKE). Fifty …
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Influence of Externally Applied Moments and Loads on Knee Kinematics: A Cadaveric Study of Single- and Multi-Axis Loading of the Knee
… pose a significantly greater risk for developing knee osteoarthritis. Many advances have been made with regard to surgical instrumentation and techniques, as well as rehabilitation programs, but none of these improvements have been proven to reduce the odds of developing osteoarthritis after ACL …
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Kinematic Analysis of Gait and Deep Knee Flexion for Pre- and Post-Operative Total Knee Arthroplasty
… causing pain, discomfort, and disability. Total Knee Arthroplasty (TKA) is a surgical procedure performed when OA symptoms are severe with an estimated 600,000 patients in the United States currently receiving TKA. Studies have reported dissatisfaction of the knee for 14-39% of patients. This …
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Wear of ultra-high molecular weight polyethylene manufactured with laser powder bed fusion
More than 750,000 total knee replacement (TKR) surgeries are performed annually in the United States (US) to treat degenerative joint diseases such as osteoarthritis. A prosthetic knee implant typically comprises a cobalt chromium (CoCr) femoral component and a polyethylene tibial insert that is …
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In vivo knee biomechanics and implications for total knee arthroplasty implant design
… determine the limitations of contemporary Total Knee Arthroplasty (TKA) and to identify areas for future improvements. In line with this objective, the first goal was to quantify the ability of current TKA systems to restore normal knee kinematics and anatomy. Recently, proposals for gender …
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High flexion kinematics and kinetics for the improvement of artificial knee joints
Total knee arthroplasty has been effective in reducing pain, but less so in restoring function, especially for activities requiring deep knee flexion. The philosophy of this dissertation was that more functionally effective and optimally designed artificial knees could be created for high flexion …
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The Influence of Frontal and Axial Plane Deformities on Contact Mechanics during Squatting: A Finite Element Study
Knee Osteoarthritis (KOA) is a degenerative joint disease and a leading cause of disability worldwide. Lower limb malalignment was a risky factor leading to KOA, altering the load distributions. This study aimed to study the influence of knee deformities on knee contact mechanics and knee …
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Effects of prophylactic lace-up ankle braces on kinetics and kinematics of the lower extremity during a state of fatigue.
… range of motion has the potential to alter knee kinematics and is linked to chronic knee pathologies. Thirteen college-aged (6 males) and (7 females) experienced in landing/cutting sports completed a random crossover design study consisting of a 90° cutting task and a 15m beep test fatigue …
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Biomechanical Outcomes of Distinct TKA Surgical Alignments and Implant Designs
<p><strong>Introduction.</strong> Total knee arthroplasty (TKA) has advanced over the past two decades from traditional post-operative neutral alignment methods with an overall goal of implant longevity to ones that are more personalized to better replicate individual native knee kinematics. …
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3D dynamic in vivo imaging of joint motion: application to measurement of anterior cruciate ligament function
… these injuries. Improved understanding of the knee motions that increase the risk of ACL injury can inform more effective injury prevention strategies. Furthermore, there is presently limited in vivo data to describe the function of ACL under dynamic loading conditions. Understanding how the …
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Investigation of in-vivo total knee arthroplasty biomechanics using a dual fluoroscopic imaging system
While contempary total knee arthroplasty has been successful in improving the quality of life for those suffering from severe osteoarthritis, the function of these patients has not reached normal levels for their age group. Thus, there is an increasing need to improve total knee arthroplasty …
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A comparison of human walking using a conventional gait laboratory and the Motek Medical Computer Assisted Rehabilitation Environment (CAREN)
… similar sensations during the two walks. The knee kinematics measured showed that they are not affected by the change in environment, while the ankle kinematics showed significantly different results for the various walking conditions, such that it was speculated that this gait parameter …
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In Vitro Investigations of Conventional vs. Robotic-Assisted Total Knee Arthroplasty
Total knee arthroplasty (TKA) treats severe osteoarthritis (OA) when conservative options fail to relieve pain or restore mobility. This procedure removes diseased tissues from the distal femur and proximal tibia, replacing them with prostheses. Traditionally, manual tools, cutting guides, and …
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The Biomechanics of Sit-to-Stand and Physical Performance in Patellofemoral Osteoarthritis
Osteoarthritis (OA) of the knee is common in Western society. OA of the patellofemoral (PF) compartment of the knee is prevalent in adults greater than 55 years of age. Isolated radiographic PFOA is present in 13.6-24% of females and 11-15.4% of males with knee pain. Biomechanical factors such as …
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