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Table 2 Simplified Binary Tönnis Classification

From: Binary Tönnis classification: simplified modification demonstrates better inter- and intra-observer reliability as well as agreement in surgical management of hip pathology

Classification

Description

Grade 0

- No or minimal joint space narrowing

- No or slight osteophytes

- No or slight sclerosis

Grade I

- Joint space narrowing

- Loss of head sphericity

- Cysts development

- Avascular necrosis

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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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