The association between proximal fusion level selection and outcomes in
Lenke type-1 adolescent idiopathic scoliosis
Aim: This study aimed to evaluate the effect of PFL on clinical and
radiological outcomes in Lenke type 1 AIS patients. Methods: The study
was retrospective and included patients diagnosed with Lenke type 1 AIS
with deformity correction and spinal fusion with the right main thoracic
curve. The patients were allocated into two groups according to the
selection of PFL, as T2 and T4 groups. Outcome measures and
classification parameters were Scoliosis Research Society - 22r (SRS -
22r) score, Oswestry disability index (ODI) Turkish version, Lenke
classification and Risser sign. The data of the two groups were
compared. Results: Postoperative shoulder imbalance and trunk shift
values were significantly lower in the T2 group whereas SRS - 22r scores
were significantly higher in the T2 group (p < 0.05 for all).
While the preoperative bending angles were significantly lower in the T4
group (p < 0.05), the two groups were similar in the
postoperative Cobb measurement, thoracic kyphosis and lumbar lordosis
angles, sagittal imbalance, and T1 tilt values (p > 0.05
for all). Conclusions: The selection of the T2 vertebra as the PFL is
more advantageous in terms of clinical and radiological results.
Additionally, there is no difference between T2 and T4 fusion levels in
terms of complications.