Subchondral treatment of joint pain

US8951261B2 · kind B2 · utility

Assignee

• ZIMMER KNEE CREATIONS, INC. · US

Inventors

• Peter F. Sharkey · Villanova, US
• Charles F. Leinberry · Chester Springs, US
• Steven B. Cohen · Redondo Beach, US
• Charanpreet S. Bagga · Jalan Pedongkelan, US
• Erik M. Erbe · Berwyn, US

Key dates

• Filing date: Nov 19, 2010
• Grant date: Feb 10, 2015
• Expiry date: Jan 19, 2031

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B17/90
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The embodiments provide devices and methods that both strengthen the bone and stimulate the bone. Bone fractures or non-unions are stabilized, integrated or healed, which results in reduction of a bone defect, such as a bone marrow lesion or edema. In addition, the distribution of forces in a joint are restored or altered to relieve pain. In general, a joint is evaluated by taking an image of the joint and one or more subchondral defects are detected. At least one of the subchondral defects may be diagnosed as the source of pain and an extent of treatment for the subchondral defect is determined. The disclosed devices and techniques are particularly suited for treating chronic defects or injuries, where the patient's natural healing response has not resolved the defect. The present disclosure also provides several exemplary treatment modalities for the different extents of treatment needed.