INTRODUCTION This report presents a new imaging technique for non-invasive study of six degrees of freedom (DOF) knee kinematics during treadmill gait. MATERIALS AND METHODS A treadmill was integrated into a dual fluoroscopic imaging system (DFIS) to formulate a gait analysis system. To demonstrate the application of the system, a healthy subject walked on the treadmill at four different spee...

Sagittal and frontal plane knee kinematics have been linked to anterior cruciate ligament injury risk during several jumping and landing tasks. The purpose of this study was to compare the knee joint kinematics of the dominant and non-dominant leg during two types of stop jump. Eleven recreationally active participants performed a stop jump from an anteroposterior approach and from a mediolater...

The aim of current research was to investigate kinematics of lower extremity during side step cutting maneuver related to anterior cruciate ligament (ACL) injury in different male and female soccer positions. Therefore, 18 male and 18 female soccer players were tested for side step cutting maneuver. Kinematics variables (hip and knee flexion and knee valgus) were captured by one camera at 50 Hz...

Introduction: It has long been established that the ACL plays a role in control of anterior-posterior (AP) kinematics of the knee. (1) Reconstructive techniques have been effective at controlling AP translations. (2) However, it has been shown the ACL also plays a role in control of axial rotations about the knee. (3) Abnormal tibial rotation following ACL injury may lead to early cartilage deg...

BACKGROUND Limited in vivo kinematic information exists on managing meniscal injury during anterior cruciate ligament reconstruction (ACLR). HYPOTHESIS Isolated anatomic ACLR restores knee kinematics, whereas ACLR in the presence of medial meniscal injury is associated with altered long-term knee kinematics. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS From March 2011 to Decem...

Abnormal knee kinematics following reconstruction of the anterior cruciate ligament may exist despite an apparent resolution of tibial laxity and functional benefit. We performed upright, weight-bearing MR scans of both knees in the sagittal plane at different angles of flexion to determine the kinematics of the knee following unilateral reconstruction (n = 12). The uninjured knee acted as a co...

Few studies have provided in vivo tibiofemoral kinematics of the normal knee during dynamic weight-bearing activities. Indeed, gold standard measurement methods (i.e., intracortical pins and biplane imaging) raise ethical and experimental issues. Moreover, the conventions used for the processing of the kinematics show large inconsistencies. This study aims at synthesising the tibiofemoral kinem...

Identification of the hip joint centre (HJC) is important in the biomechanical examination of human movement. However, there is yet to be any published information regarding the influence of different HJC locations on hip and knee joint kinetics during functional tasks. This study aimed to examine the influence of four different HJC techniques on 3-D hip and knee joint kinetics/kinematics durin...

Knee injury is a common medical issue. A full understanding of the kinematics and mechanical properties of knees following total knee arthroplasty (TKA) repair utilizing patellar replacement (only the base of the patella is replaced) versus patellar retaining surgical techniques is still lacking. In the current paper, we investigated magnetic resonance (MR) imaging data from knees repaired by t...

CONTEXT It is not clear how noncyclists control joint power and kinematics in different mechanical setups (saddle height, workload, and pedaling cadence). Joint mechanical work contribution and kinematics analysis could improve our comprehension of the coordinative pattern of noncyclists and provide evidence for bicycle setup to prevent injury. OBJECTIVE To compare joint mechanical work distr...