Radiographic evaluation of posttraumatic osteoarthritis of the ankle: the Kellgren– Lawrence scale is reliable and correlates with clinical symptoms N.

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Presentation transcript:

Radiographic evaluation of posttraumatic osteoarthritis of the ankle: the Kellgren– Lawrence scale is reliable and correlates with clinical symptoms N. Holzer, D. Salvo, A.C.A. Marijnissen, K.L. Vincken, A.C. Ahmad, E. Serra, P. Hoffmeyer, R. Stern, A. Lübbeke, M. Assal Osteoarthritis and Cartilage Volume 23, Issue 3, Pages 363-369 (March 2015) DOI: 10.1016/j.joca.2014.11.010 Copyright © 2014 Osteoarthritis Research Society International Terms and Conditions

Fig. 1 Radiographic analysis of the ankle. Osteophyte presence was assessed at the medial malleolus (A), tibiotalar joint space (B), and lateral malleolus (C). Using the AIDA software22, the tibiotalar joint space was divided into five zones (1–5). Margins were manually set yielding three density measurement zones on each side. Joint space width was automatically computed between margins at five points (bold line). A tibial reference (calibration) point was automatically generated (R). Osteoarthritis and Cartilage 2015 23, 363-369DOI: (10.1016/j.joca.2014.11.010) Copyright © 2014 Osteoarthritis Research Society International Terms and Conditions

Fig. 2 Image examples of K&L scale for ankle OA. Two examples are displayed for each grade with operated side of relevant grade on the left and contralateral side without fracture on the right. Grade 1: example 1 – operated side displays osteophytes of doubtful significance on the medial malleolus. Example 2 – operated and non-operated sides display osteophytes of doubtful significance on the medial and lateral malleoli. Grade 2: example 1 – operate side displays definite osteophytes on the medial and lateral malleoli. Example 2 – operated side displays definite osteophytes on medial and lateral malleoli; contralateral side displays osteophytes of doubtful significance on the medial malleoli. Grade 3a: operated side displays definite osteophytes on the medial and lateral malleoli, moderate (<half) joint space narrowing and tibiotalar tilt ≤ 2° (1.6°). Grade 3b: operated side displays definite osteophytes on the medial and lateral malleoli, moderate (<50%) medial joint space narrowing and tibiotalar tilt ≥ 2° (3.3°). Grade 4: example 1 – operated side displays definitive osteophytes on the medial and lateral malleoli as well as prominent (>50%) joint space width narrowing and tibiotalar sclerosis. Example 2 – operated side displays definitive osteophytes on the medial and lateral malleoli as well as complete joint space width narrowing and tibiotalar sclerosis. Osteoarthritis and Cartilage 2015 23, 363-369DOI: (10.1016/j.joca.2014.11.010) Copyright © 2014 Osteoarthritis Research Society International Terms and Conditions

Fig. 3 Percentage of low (Danis–Weber A and B) and high (Danis–Weber C) severity of ankle injury according to K&L grades. Osteoarthritis and Cartilage 2015 23, 363-369DOI: (10.1016/j.joca.2014.11.010) Copyright © 2014 Osteoarthritis Research Society International Terms and Conditions