Dave's PCF WIP: Paragraphs

Paragraphs

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View Edit Delete	OPT-13	Referring to FIGS 28A to 28F, an assembly 2800 for an implantable knee prosthesis is shown, according to another embodiment. Assembly 2800 may include a femoral component 2801, an insert 2810, and a tibial baseplate component 2840. FIG. 28A is an exploded view of the assembly 2800 viewed from a posterior-lateral side, in reference to the anatomy of a patient. The assembly 2800 is generally asymmetric across the medial and lateral sides, in other words the left side is asymmetric compared to the right side. FIGS. 28A-28F illustrate a right knee design.	129	Added by DJM 1 2022	1/25/22, 12:00 AM
View Edit Delete	OPT-13	The medial posterior side 2815, of the medial tibial compartment 2813, may have a thickness defined by the medial high point 2827 at the medial perimeter 2826, which may correspond to the medial ramp 2838, and/or the baseplate interface 2811. The lateral posterior side 2816, of the lateral tibial compartment 2814, may have a thickness defined by the lateral high point 2830 at the lateral perimeter 2829 and the baseplate interface 2811. Because of the medial ramp 2838, the medial tibial compartment 2813 may have a greater thickness than the lateral tibial compartment 2814.	146	Added by DJM 1 2022	1/25/22, 12:00 AM
View Edit Delete	OPT-13	Referring to FIG. 28F, the medial ramp 2838 and the gradient it creates along the medial articulation surface 2820 towards the medial low point 2828 and may cause a translation or movement of the medial condyle 2802 greater than a translation or movement of the lateral condyle 2803, as the knee and assembly 2800 range from 0 degrees of flexion, or extension, to 90 degrees of flexion. The medial condyle 2802 may move down the medial ramp 2838 such that the medial dwell point 2835 migrates anteriorly and outwardly toward the medial perimeter 2826 as the degree of flexion increases. The lateral condyle 2803 may remain in generally the same location near the lateral low point 2831 so the lateral dwell point 2836 may remain in generally the same location. In certain embodiments, the lateral condyle 2803 may also migrate as the knee moves into flexion, so that the lateral dwell point 2836 migrates posteriorly and outwardly concurrently as the medial dwell point 2835 migrates anteriorly and outwardly. The asymmetric translation of the medial dwell point 2835 and lateral dwell point 2836 may create a tibiofemoral rotation between extension and flexion. Such tibiofemoral rotation is desired behavior for a healthy knee joint and may be referred to as Screw home Mechanism (SHM) of a knee joint caused, at least in part, by the difference in size of the medial condyle and lateral condyle of the distal femur.	147	Added by DJM 1 2022	1/25/22, 12:00 AM
View Edit Delete	OPT-13	FIG. 29 is a perspective anterior view of a knee prosthesis system 2900 according to one embodiment of the present disclosure. The knee prosthesis system 2900 includes a femoral component, an insert, and a tibial baseplate component. In certain embodiments, a particular femoral component and a particular tibial baseplate component are specifically configured for a left knee joint. In certain embodiments, a particular femoral component and a particular tibial baseplate component are specifically configured for a right knee joint. Alternatively, or in addition, the femoral component and tibial baseplate component may be specifically configured for use in either one of a left knee joint or a right knee joint. A knee prosthesis system 2900 for the left knee joint may be configured for a first side of a patient. Alternatively, or in addition, a knee prosthesis system for the right knee joint may be configured for a second side of a patient, the second side being the other side of the right side and the left side.	148	Added by DJM 1 2022	1/25/22, 12:00 AM
View Edit Delete	OPT-13	In the illustrated embodiment, the femoral component is the femoral component 2401 for a left knee (See FIG. 24A) and the tibial baseplate component is the tibial baseplate component 2440 for a left knee. The tibial baseplate component 2440 includes an insert interface 2441. The femoral component 2401 includes a femoral articulation surface that includes one, or both of, the medial condylar articulation surface 2404 and the lateral condylar articulation surface 2405.	149	Added by DJM 1 2022	1/25/22, 12:00 AM
View Edit Delete	OPT-13	FIG. 29 illustrates a three-dimensional axis 2902. The three-dimensional axis 2902 includes a cephalad-caudal axis 2904, a medial-lateral axis 2906, and an anterior-posterior axis 2908. FIG. 29 illustrates the orientation and configuration of the femoral component 2401 and tibial baseplate component 2440 for a left knee of a patient where the left knee has a condition. As used herein, a “condition” refers to a state of something with regard to its appearance, quality, or working order. In certain embodiments, a condition may refer to a patient's state of health or physical fitness or the state of health or physical fitness of an organ or anatomical part of a patient. In certain embodiments, a condition may refer to an illness or deformity of a patient or of an organ or anatomical part of a patient. (Search "condition" on wordhippo.com. WordHippo, 2021. Web. Accessed 8 Dec. 2021. Modified.) In the illustrated embodiment, the left knee of a patient has a varus condition with the knee joint angled about eight degrees away from a vertical axis, such as the cephalad-caudal axis 2904.	150	Added by DJM 1 2022	1/25/22, 12:00 AM
View Edit Delete	OPT-13	As used herein, a "varus condition" refers to a state of a bone or joint having an undesired inward angulation (medial angulation, that is, towards the body's midline) of the distal segment of a bone or joint. The opposite of varus is called valgus. The terms varus and valgus refer to the direction that the distal segment of the joint points. For example, a varus condition at the knee results in a bowlegged appearance with the distal part of the leg deviated inward, in relation to the femur. In a valgus condition of the knee, the distal part of the leg below the knee is deviated outward, in relation to the femur, resulting in a knock-kneed appearance. (Search "varus deformity" on Wikipedia.com Oct 20, 2020. Modified. Accessed Jan. 6, 2020.) A varus condition can be experienced in a variety of joints, including but not limited to, ankle joints, elbow joints, foot joints, hand joints, hip joints, knee joints, toe joints, wrist joints, and the like. A knee that has a varus condition may also be referred to as a varus knee.	151	Added by DJM 1 2022	1/25/22, 12:00 AM
View Edit Delete	OPT-13	A patient knee with a varus condition may cause one or more problems or challenges in the kinematics of the knee as the knee transitions through various angles of flexion and/or extension. For example, a varus knee may have undesirable stability (insufficient stability) during flexion. This undesired instability may be caused by a gap imbalance between the medial and lateral condyles of the femoral component 2401 (or the distal end of the femur). Such instability is referred to as mediolateral stability.	152	Added by DJM 1 2022	1/25/22, 12:00 AM
View Edit Delete	OPT-13	As used herein, “mediolateral stability” refers to a condition of joint and/or parts associated with a joint being stable or in equilibrium, and thus resistant to change along a medial-lateral axis 2906 of a patient and/or a joint of the patient. (Search "stability" on wordhippo.com. WordHippo, 2021. Web. Accessed 8 Dec. 2021. Modified.) The insufficient or undesirable level of mediolateral stability during flexion may cause anxiety for the patient during flexion and reduced confidence in the integrity and performance of the knee prosthesis system 2900.	153	Added by DJM 1 2022	1/25/22, 12:00 AM
View Edit Delete	OPT-13	Advantageously, the knee prosthesis system 2900 can remediate an undesirable level of mediolateral stability based on a tibial insert used by the surgeon when deploying the knee prosthesis system 2900. In the illustrated embodiment, the surgeon may choose, either pre-operatively and/or intraoperatively, to use tibial insert 2910a with the tibial baseplate component 2440 and the femoral component 2401 for a left knee. The tibial insert 2910a is positioned between the tibial baseplate component 2440 and the femoral component 2401 when deployed, see arrow 2912.	154	Added by DJM 1 2022	1/25/22, 12:00 AM
View Edit Delete	OPT-13	The tibial insert 2910a includes a tibial articulation surface 2812 having a medial tibial compartment 2813 and a lateral tibial compartment 2814. The tibial insert 2910b includes a tibial articulation surface 2412 having medial tibial compartment 2413 and a lateral tibial compartment 2414. Advantageously, in one embodiment, the baseplate interface 2811 of the tibial insert 2910a is complementary to, and/or compatible with, the insert interface 2441 of the tibial baseplate component 2440. The baseplate interface 2411 of the tibial insert 2910b is also complementary to, and/or compatible with, the insert interface 2441 of the tibial baseplate component 2440. The compatible interfaces 2811, 2441 enable the surgeon to deploy the tibial insert 2910a with the tibial baseplate component 2440 and the femoral component 2401 for a left knee to adapt, adjust, refine, or modify kinematics of a patient’s left knee joint having a condition. The tibial articulation surface 2812 is shaped to cooperate with the femoral articulation surface to adapt kinematics of a knee joint having a condition. In the illustrated embodiment, the condition is a varus condition, the condition can also be one of a valgus condition and a balanced condition.	155	Added by DJM 1 2022	1/25/22, 12:00 AM
View Edit Delete	OPT-13	In one embodiment, the tibial articulation surface 2812 is configured to include one or more of a medial tibial compartment 2813, a lateral tibial compartment 2814, a medial articulation surface 2820, a lateral articulation surface 2821, and/or high and/or low points within the medial articulation surface 2820, and/or the lateral articulation surface 2821 to remediate a condition of the knee joint into which the knee prosthesis system 2900 deployed. In one embodiment, the tibial articulation surface 2812 contour and/or features adjust mediolateral stability during flexion of a first knee joint having a varus condition: is a varus knee joint. In one embodiment, a tibial articulation surface 2812 of the tibial insert 2910a may adjust mediolateral stability by increasing constraint on a lateral collateral ligament of the first knee joint and decreases tension on a medial collateral ligament of the first knee joint.	156	Added by DJM 1 2022	1/25/22, 12:00 AM
View Edit Delete	OPT-13	It should be noted that in the illustrated embodiment a surgeon may deploy the tibial insert 2910a in a left knee because the knee has a condition. However, the tibial insert 2910a may also be deployed (e.g., is suitable for implantation) in a patient’s right knee joint that lacks the condition. As used herein, “suitable for implantation” refers to device or implant configured such that deployment of the implant in a patient will result in a desired impact on the health and/or wellbeing of the patient. While the tibial insert 2910a may be designed for deployment in a right knee joint that lacks a condition, or has a balanced condition, the tibial insert 2910a is illustrated in FIG. 29 being deployed in a left knee joint that has a varus condition of about eight degrees.	157	Added by DJM 1 2022	1/25/22, 12:00 AM
View Edit Delete	OPT-13	As used herein, “kinematics” refers to an area of mechanics concerned with objects in motion, but not with the forces involved. (Search "compartment" on wordhippo.com. WordHippo, 2021. Web. Accessed 8 Dec. 2021. Modified.) In certain embodiments, kinematics refers to aspects involved in the motion and/or interaction of components in motion in relation to each other and other components. Motions involved in kinematics may include but are not limited to linear, rotary, reciprocating, and/or oscillating.	158	Added by DJM 1 2022	1/25/22, 12:00 AM
View Edit Delete	OPT-13	As used herein, “flexion” refers to the act of bending a joint, especially a bone joint. The counteraction of extension. (Search "flexion" on wordhippo.com. WordHippo, 2021. Web. Accessed 8 Dec. 2021. Modified.) Flexion may include the act of moving parts of a joint from an unflexed or extended state to a nonextended or flexed state and may be expressed in terms of degrees of the flexion and/or extension. The range of degrees available to express the state of extension and/or flexion may depend on the range of motion for a particular joint. As used herein, “extension” refers to the act of unbending a joint, especially a bone joint. The counteraction of flexion. (Search "flexion" on wordhippo.com. WordHippo, 2021. Web. Accessed 8 Dec. 2021. Modified.) Extension may include the act of moving parts of a joint from a flexed state to an extended state and may be expressed in terms of degrees of the extension and/or flexion. The range of degrees available to express the state of extension and/or flexion may depend on the range of motion for a particular joint. As used herein, a "tension" refers to a force that is applied to both ends of a thin elongated structure. For example, a ligament such as a lateral collateral ligament may experience tension due to how the ligament is attached to a femur bone and tibia bone and stretched during flexing of the knee joint.	159	Added by DJM 1 2022	1/25/22, 12:00 AM
View Edit Delete	OPT-13	In one embodiment, the femoral component 2401 is configured for a first side of a patient and the tibial insert 2910a is configured for the second side of the patient. In the illustrated embodiment, the first side may be a left side of a patient and the second side may be a right side of a patient. Alternatively, or in addition, the first side may be a right side of a patient and the second side may be a left side of a patient.	160	Added by DJM 1 2022	1/25/22, 12:00 AM

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