However, when alignment is lordotic, it is unknown whether these associations persist.

Preoperative lordotic angles were too heterogeneous to pool the results.

Lumbosacral lordotic angle presented no change from preoperative to postoperative and from postoperative to 2-year follow-up.

Reduction, loss of reduction, and lordotic angles before and after the treatment was reported in only four studies.

Logistic regression analysis demonstrated that lordotic change in both C4-C5 and C2-C7 Cobb angles were associated with development of palsy.