progressive tibial bearing sagittal plane conformity in
Medial tibial plateau morphology and stress fracture
The medial slope in the coronal plane and the sagittal slope of the medial tibial plateau in the sagittal plane were then measured as the angle between a line joining the peak points on the medial-to-lateral and the anterior-to-posterior aspects of the plateau and the longitudinal axis The measured value was rounded off to the first decimal
Effect of anterior translation of the talus on outcomes of
Sep 05 2013In Group A and Group B the tibial components were positioned in the coronal plane at an average α angle of 89 1 degrees (range 81 5 to 94 7 degrees) and 89 2 degrees (range 84 1 to 95 4 degrees) respectively and in the sagittal plane at an average β angle of 85 2 degrees (range 81 3 to 94 1 degrees) and 85 4 degrees (range 79 9 to 92 6
Effect of medial opening wedge high tibial osteotomy on
Previous studies have documented the effects of HTO on the biomechanics of the knee 2-12 Opening wedge HTO may lead to increased patellofemoral peak pressure 2 3 A moderate‐to‐large increase in the valgus alignment of the lower limb can result in decreased contact pressures in the medial compartment 4 13 14 Sagittal plane changes in
The long
The femoral and tibial components of the LCS mobile-bearing TKR were conforming in the sagittal plane from full extension to 30˚ of flexion to optimise the contact areas and less conforming from 30˚ of flexion to full flex-ion to allow better mobility The rotating-platform design allowed only rotation and had a relatively deep sagittal-
HIGH TIBIAL OSTEOTOMY
Stationary bike – Progressive resistance and time Pool therapy – Chest deep exercises in sagittal plane only Goal – Full ROM Weeks 8 – 12 Brace – Continue until 12 weeks post-op Crutches – Weight bearing as tolerated (WBAT) (D/C when gait is normal) Continue appropriate previous exercises
Effect of Tibial Component Alignment on Knee Kinematics
Methods: The tibial component was first aligned perpendicular to the mechanical axis of the tibia with a 7 posterior slope (basic model) Subsequently coronal and sagittal plane alignments were changed in a simulation programme Kinematics and cruciate ligament tensions were simulated during weight-bearing deep knee bend and gait motions
Polyethylene Contact Stresses Articular Congruity and
tal articular radius of 33 mm a posterior sagittal ra-dius of 20 mm and a coronal radius of 20 mm (Fig 2) For the high-conformity condition each femo-ral condyle had a distal sagittal articular radius of 37 mm a posterior sagittal radius of 25 mm and a coronal radius of 21 mm Nonlinear polyethylene
Tibial bearing component for a knee prosthesis with
Sagittal conformity between lateral condyle 24 and lateral articular compartment 18 is defined as the ratio R STL: This progressive angling accommodates external rotation of femoral component 20 in deep flexion 18 are substantial mirror images of one another about a sagittal plane bisecting tibial bearing component 12
PROXIMAL TIBIAL OSTEOTOMY: STABILIZATION OF THE
the tibial plateau Figure 4 – Ideal point of passage of the corrected mechanical axis as recommended by Noyes et al 7 to 12 A comparison was made between the pre and postoperative posterior slope (sagittal plane) (Table 2) It was found that there was no inversion of the tibial slope but that in some cases there was an increase even
Anterior Tibial Translation During Progressive Loading of
Nov 01 1994During the weight-bearing exercise anterior tibial translation was found to be significantly less than that measured during the Lachman's evaluation and the 50 75 and nonweight-bearing exercises for the nonweighl-bearing exercises anterior tibial translation was either equivalent to or greater than the Lachman's evaluation
Effect of Tibial Insert Geometry on Kinematics Following
Effect of Tibial Insert Geometry on Kinematics Following Fixed- Bearing Cruciate-Retaining Total Knee Arthroplasty with less sagittal plane conformity ha ve greater posterior motion in early the sagittal plane which causes sli ppage at the contacts between the
High Tibial Osteotomy
GALLAND/KIRBY HIGH TIBIAL OSTEOTOMY POST- SURGICAL REHABILITATION PROTOCOL POST-OP DAYS 1 – 14 • Dressing: -POD 1: Debulk dressing TED Hose in place -POD 2: Change dressing keep wound covered continue TED Hose -POD 7-10: Sutures out D/C TED Hose when effusion is resolved • Brace – 0-90 degrees
Rotating Platform Knee System
tibial tubercle and the medial margin of the lateral intercondylar eminence with the extremities of the cutting surface against the anterior cortex The exact level of resection will vary according to patient anatomy As the mediolateral transverse plane of the tibial plateau is
Sagittal Laxity After Posterior Cruciate Ligament
Aug 01 2009The results of this shape-matching process have root mean square errors of approximately 0 58 to 1 08 mm for rotations and 0 5 to 1 0 mm for translations in the sagittal plane Joint kinematics were determined from the 3-dimensional pose of each TKA component using standard knee joint measurement conventions [9]
Surface Damage Versus Tibial Polyethylene Insert
The less conforming group comprised 31 inserts from one posterior cruciate-retaining (CR) TKA design (MG II Zimmer Inc) that were unconstrained and nonconforming in the sagittal plane but flat and fully conforming against a flat femoral surface in the coronal plane Defining conformity as the ratio of the femoral to tibial contact radii
Published in: Clin Orthop Relat Res (2008) 466:2491–2499
sagittal plane and a tibial bearing surface that is only partially conforming but with the same sagittal plane geometry medially and laterally Given the putative accuracy of a navigation system balancing the ligaments we presume the kinematic changes primarily would be attributable to the articular geometry and secondarily to the loss of the ACL
High Tibial Osteotomy
• Stationary bike – Progressive resistance and time • Pool therapy – Chest deep exercises in sagittal plane only GOAL • Full ROM WEEKS 8 - 12 • Brace – Continue until 12 weeks post-op • Crutches – Weight bearing as tolerated (WBAT) (D/C when gait is normal) • Continue appropriate previous exercises
Anterior Tibial Translation During Progressive Loading of
Nov 01 1994During the weight-bearing exercise anterior tibial translation was found to be significantly less than that measured during the Lachman's evaluation and the 50 75 and nonweight-bearing exercises for the nonweighl-bearing exercises anterior tibial translation was either equivalent to or greater than the Lachman's evaluation
Accuracy assessment of measuring component position after
tive sagittal deformity: extension neutral and plantar flexion The aimed value of the anterior distal tibial angle was 84 Therefore we defined a neutral position in sagittal plane as being in the rage of 79 to 89 of the anterior distal tibial angle On the sagittal plane 85 (56 7%) ankles showed extension of the distal tibial slope
Anterior Tibial Translation During Progressive Loading of
During the weight-bearing exercise anterior tibial translation was found to be significantly less than that measured during the Lachman's evaluation and the 50 75 and nonweight-bearing exercises for the nonweighl-bearing exercises anterior tibial translation was either equivalent to or greater than the Lachman's evaluation
Stance and weight distribution after tibial plateau
Jun 10 2020Little is known about the weight distribution to the remaining limbs for amputee dogs that undergo orthopedic surgery The objective of the paper was to describe stance and weight distribution after tibial plateau leveling osteotomy (TPLO) in forelimb and in hind limb amputees (AmpTPLO) and to compare them to four-legged TPLO patients (4LTPLO) and amputees without TPLO (Amp) Weight bearing
Effect of Tibial Insert Geometry on Kinematics Following
Effect of Tibial Insert Geometry on Kinematics Following Fixed- Bearing Cruciate-Retaining Total Knee Arthroplasty with less sagittal plane conformity ha ve greater posterior motion in early the sagittal plane which causes sli ppage at the contacts between the
Contribution of geometric design parameters to knee
Results: The femoral and tibial distal or posterior radii and femoral frontal radius are the key parameters In the sagittal plane distal curvature of the femoral and tibial influenced both contact pressure i e SI = 0 57 SI = 0 65 and A-P ROM i e SI = 0 58 SI = 0 6 respectively
HIGH TIBIAL OSTEOTOMY REHABILITATION PROTOCOL
HIGH TIBIAL OSTEOTOMY REHABILITATION PROTOCOL Crutches – Non weight bearing (NWB) x 6 weeks EXERCISES: CPM in hospital – 0-90 degrees AROM AAROM 0-90 degrees Stationary bike – Progressive resistance and time Pool therapy – Chest deep exercises in sagittal plane







