Assessing the condition of a joint and preventing damage

Details Assessing the condition of a joint and preventing damage Assessing the condition of a joint and preventing damage

A - Human Necessities

61

B

A61B 5/11 (2006.01)

Patent

CA 2354525

Methods are disclosed for assessing the condition of a cartilage in a joint, particularly a human knee. The methods include converting an image such as an MRI to a three dimensional map of the cartilage. The cartilage map is then correlated to a movement pattern of the joint to assess the affect of movement on cartilage wear. Reference markers useful in obtaining internal images of the cartilage and bone and external images of the limbs in a motion are described. The markers aid in correlating the various images. Changes in the thickness of cartilage over time can be determined so that therapies can be provided.

L'invention concerne un procédé pour estimer l'état d'un cartilage dans une articulation, notamment dans le genou d'un humain. Les procédés de l'invention consistent à convertir une image telle qu'une image de RMI en une carte du cartilage en trois dimensions. La carte du cartilage est ensuite corrélée à un schéma de mouvement de l'articulation, ce qui permet de faire une estimation de l'effet du mouvement sur l'usure du cartilage. L'invention concerne aussi des marqueurs de référence utiles pour obtenir des images internes du cartilage et de l'os et des images externes sur les membres en mouvement. Les marqueurs permettent de corréler diverses images. On peut ainsi déterminer les changements dans l'épaisseur du cartilage sur une période de temps, ce qui permet de procéder à des thérapies.

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