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Table 2 Functional scores and Ankle dorsiflexion between the anterior ankle impingement (AAI) group and the pure CAI group pre-operatively and post-operatively

From: Arthroscopic debridement of anterior ankle impingement in patients with chronic lateral ankle instability

Variable   AAI group (n = 22) pure CAI group (n = 38) P value
AOFAS score Pre-op 62.9 ± 11.7 72.9 ± 11.1 0.002
Post-op 93.4 ± 7.4 92.3 ± 9.4 n.s.
Karlsson Score Pre-op 57.3 ± 12.4 63.1 ± 16.5 n.s.
Post-op 90.0 ± 9.1 89.6 ± 12.5 n.s.
Tegner score Pre-op 1.5 ± 0.8 2.1 ± 1.0 0.04
Post-op 4.4 ± 1.3 5.2 ± 1.8 n.s.
Ankle dorsiflexion ( °) Pre-op 13 ± 2.1 26.2 ± 2.1 < 0.001
Post-op 25.9 ± 2.4 26 ± 2.1 n.s.
  1. AAI anterior ankle impingement, AOFAS American Orthopaedic Foot and Ankle Society; Pre-op pre-operatively, Post-op post-operatively “p value” indicated the comparison between the AAI group and the pure CAI group