Tönnis classification
Trauma and orthopaedics
Also known as: Tönnis-Klassifikation (Koxarthrose) · Tönnis sınıflaması (kalça osteoartriti) · Tönnis classification (hip osteoarthritis)
What it is for
Radiographic grading of hip osteoarthritis on the anteroposterior pelvis view by sclerosis, joint space narrowing, cysts and femoral head deformity.
Classification
| Category | Description |
|---|---|
| Grade 0 | no signs of osteoarthritis. |
| Grade 1 | increased sclerosis of head or acetabulum, slight joint space narrowing, slight lipping at the joint margins (small osteophytes). |
| Grade 2 | small cysts, moderate joint space narrowing, moderate loss of femoral head sphericity. |
| Grade 3 | large cysts, severe narrowing or obliteration of the joint space, severe deformity of the femoral head. |
Source
Eine neue Methode zur röntgenologischen Beurteilung eines Hüftgelenkes – Der Hüftwert
Arch Orthop Unfallchir 1972;72:1–9 (Busse J, Gasteiger W, Tönnis D)
DOI: 10.1007/BF00415854
- Edition
- Tönnis grades 1–3 (Busse, Gasteiger & Tönnis 1972); grade 0 added by Tönnis & Heinecke 1999
- Checked on
Summary of the published classification in our own words. Not a substitute for the original publication.
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