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

Table 6.

Surgical outcomes for patients with symptom duration from 0 to 3 months

Parameter Group A Group B p Value
Symptom duration (months) 2.1 ± 0.9 1.8 ± 0.6 0.338
JOA score
 Preoperatively 8.8 ± 2.6 10.5 ± 2.7 0.044
 Six months postoperatively 12.0 ± 2.4 14.1 ± 1.6 0.010
 Final follow-up 11.4 ± 4.3 14.3 ± 1.8 0.025
Recovery ratio (%)
 Six months postoperatively 40.7 ± 19.4 50.1 ± 30.4 0.301
 Final follow-up 37.7 ± 33.0 53.7 ± 32.1 0.092

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

Patients undergoing anterior procedure were excluded

JOA Japanese Orthopaedic Association