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. 2011 Jan 1;20(2):240–246. doi: 10.1007/s00586-010-1672-7

Table 5.

Surgical outcomes for patients with preoperative JOA scores from 8 to 12 points

Parameter Group A Group B p Value
JOA score
 Preoperatively 9.9 ± 1.2 10.1 ± 1.2 0.49
 Six months postoperatively 12.7 ± 1.9 13.4 ± 1.9 0.13
 Final follow-up 12.8 ± 1.8 13.3 ± 2.4 0.19
Recovery ratio (%)
 Six months postoperatively 38.5 ± 25.4 50.0 ± 26.1 0.13
 Final follow-up 40.1 ± 24.6 46.0 ± 35.0 0.20

Values for Japanese Orthopaedic Association score and recovery ratio are given as mean ± SD

Patients undergoing anterior procedure were excluded

JOA Japanese Orthopaedic Association