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Surgical Treatment of Lenke Type 5 Adolescent Idiopathic Scoliosis

A Systematic Review

Yoshihara, Hiroyuki MD, PhD∗,†

doi: 10.1097/BRS.0000000000002963
LITERATURE REVIEW
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Study Design. A systematic review.

Objective. To systemically review the previous literature regarding surgical treatment of Lenke type 5 adolescent idiopathic scoliosis (AIS).

Summary of Background Data. The Lenke classification was published in 2001 as the classification of AIS. Since then, numerous articles have been published reporting the outcomes of surgical treatment of Lenke type 5 AIS.

Methods. The electronic databases PubMed, EMBASE, and Web of Science were queried up to Aug 2018 for articles regarding surgical treatment of Lenke type 5 AIS. Surgical variables, radiographic assessments, and clinical outcomes of surgical treatment of Lenke type 5 AIS were summarized.

Results. Fifty studies met the inclusion criteria. The average fused levels, % correction of thoracolumbar/lumbar curve at final follow-up, and % correction of thoracic curve at final follow-up for anterior and posterior procedures were reported to be 3.6–5.3 and 4.3–7.8 levels, 53–86 and 55–94% and 17–52 and 19–67%, respectively. Average coronal balance was imbalanced (≥20 mm) at preoperation in 22/43 reporting study groups and balanced (<20 mm) at final follow-up in all 37 reporting study groups. Scoliosis Research Society Version 22 scores showed no difference between anterior and posterior procedures in most of the reporting studies (5/6).

Conclusion. Overall, the outcomes of surgical treatment of Lenke type 5 AIS are excellent. The thoracic curve was spontaneously corrected after surgery and coronal balance after surgery was better than before surgery. Both anterior and posterior procedures demonstrated satisfactory outcomes.

Level of Evidence: 4

Surgical treatment of Lenke type 5 adolescent idiopathic scoliosis (AIS) was systemically reviewed. Fifty studies met the inclusion criteria. Overall, the outcomes of surgical treatment of Lenke type 5 AIS are excellent. Both anterior and posterior procedures demonstrated satisfactory outcomes.

Department of Orthopaedic Surgery and Rehabilitation Medicine, SUNY Downstate Medical Center, Brooklyn, NY

Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medicine, Nagoya, Japan.

Address correspondence and reprint requests to Hiroyuki Yoshihara, MD, PhD, 450 Clarkson Ave, Brooklyn, NY 11203; E-mail: hiroyoshihara55@yahoo.co.jp

Received 11 October, 2018

Accepted 21 November, 2018

The manuscript submitted does not contain information about medical device(s)/drug(s).

No funds were received in support of this work.

No relevant financial activities outside the submitted work.

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