Anchor type at upper instrumented vertebra and postoperative shoulder imbalance in patients with Lenke type 1 adolescent idiopathic scoliosis.
Eur J Orthop Surg Traumatol
; 31(2): 245-251, 2021 Feb.
Article
de En
| MEDLINE
| ID: mdl-32803280
ABSTRACT
PURPOSE:
To clarify the impact of anchor type at upper instrumented vertebra (UIV) on postoperative shoulder imbalance in patients with Lenke type 1 adolescent idiopathic scoliosis (AIS) who underwent posterior spinal fusion.METHODS:
Subjects were 81 patients with Lenke type 1 AIS who underwent posterior spinal fusion between 2004 and 2013. Twenty-five patients agreed to participate in the study. We divided the patients into two groups Hook group (15 patients with hooks at UIV who underwent surgery between 2004 and 2011) and PS group (ten patients with pedicle screws at UIV who underwent surgery between 2012 and 2013). To evaluate shoulder balance, first thoracic vertebra tilt angle (T1 tilt), clavicle angle (CA), and radiographic shoulder height (RSH) were measured.RESULTS:
There were no significant differences in preoperative T1 tilt, CA, or RSH between the both groups. The postoperative 1-week, 2-year, and most recently observed T1 tilts were significantly smaller in the Hook group than in the PS group. There were no significant differences in postoperative 1-week, 2-year, and most recently observed CAs between the two groups. Although there were no significant differences in 1-week postoperative RSH between the groups, the 2-year postoperative RSH was significantly smaller in the Hook group than in the PS group. The most recently observed RSH tended to be smaller in the Hook group than in the PS group, but the difference was not significant.CONCLUSIONS:
In the PS group, poor shoulder balance remained over the long term. The hooks at UIV adjusted postoperative shoulder balance.Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Scoliose
/
Arthrodèse vertébrale
Type d'étude:
Observational_studies
/
Prognostic_studies
Limites:
Adolescent
/
Humans
Langue:
En
Journal:
Eur J Orthop Surg Traumatol
Année:
2021
Type de document:
Article
Pays d'affiliation:
Japon