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Extension methods. Relevant articles and demonstrations:
![uvm art](https://hheelknee.com/wp-content/uploads/2022/09/uvm-art.jpg)
!["Loss"](https://hheelknee.com/wp-content/uploads/2022/09/vail-art.jpg)
!["Laxity"](https://hheelknee.com/wp-content/uploads/2022/11/KW-hyperE.jpg)
!["Lift"](https://hheelknee.com/wp-content/uploads/2022/09/Shel-art.jpg)
!["Lift"](https://hheelknee.com/wp-content/uploads/2022/09/Larson-art.jpg)
!["Lift"](https://hheelknee.com/wp-content/uploads/2022/09/vail2-art.jpg)
!["Lever" or "Lelli"](https://hheelknee.com/wp-content/uploads/2022/09/Lever-art.jpg)
!["Line"](https://hheelknee.com/wp-content/uploads/2022/09/Jim-art.jpg)
!["Lag"](https://hheelknee.com/wp-content/uploads/2022/11/lag-article.jpg)
![LOM](https://hheelknee.com/wp-content/uploads/2022/12/LOM.jpg)
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![Heel Height Evaluating Extension Laxity](https://hheelknee.com/wp-content/uploads/2022/09/Exc-lax-1.png)
![Heel Height Evaluating Extension Lift](https://hheelknee.com/wp-content/uploads/2022/09/Ext-lift.png)
![Heel Height Evaluating Extension Loss](https://hheelknee.com/wp-content/uploads/2022/09/Ext-loss-2.png)
![Heel Height Evaluating Epicondyle Location](https://hheelknee.com/wp-content/uploads/2022/09/Epi-loc-2-768x438.png)
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![Heel Height Evaluating Extension Line](https://hheelknee.com/wp-content/uploads/2022/09/Ext-line.png)
![Heel Height Evaluating Extension Limit](https://hheelknee.com/wp-content/uploads/2022/09/Ext-limit.png)
![Heel Height Evaluating Extension Lift](https://hheelknee.com/wp-content/uploads/2023/01/Ext-lift-2-768x406.png)
![Heel Height Evaluating Extension Lag](https://hheelknee.com/wp-content/uploads/2022/09/Ext-lag.png)
![Heel Height Evaluating Extension Lever (Lelli)](https://hheelknee.com/wp-content/uploads/2022/09/Ext-lever.png)
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