Revision Strategies for Harrington Rod Instrumentation : Radiographic Outcomes and Complications

STUDY DESIGN: Retrospective case series.

OBJECTIVE: The purpose of this study is to evaluate the clinical and radiographic outcomes following revision surgery following Harrington rod instrumentation.

METHODS: Patients who underwent revision surgery with a minimum of 1-year follow-up for flatback syndrome following Harrington rod instrumentation for adolescent idiopathic scoliosis were identified from a multicenter dataset. Baseline demographics and intraoperative information were obtained. Preoperative, initial postoperative, and most recent spinopelvic parameters were compared. Postoperative complications and reoperations were subsequently evaluated.

RESULTS: A total of 41 patients met the inclusion criteria with an average follow-up of 27.7 months. Overall, 14 patients (34.1%) underwent a combined anterior-posterior fusion, and 27 (65.9%) underwent an osteotomy for correction. Preoperatively, the most common lower instrumented vertebra (LIV) was at L3 and L4 (61%), whereas 85% had a LIV to the pelvis after revision. The mean preoperative pelvic incidence-lumbar lordosis mismatch and C7 sagittal vertical axis were 23.7° and 89.6 mm. This was corrected to 8.1° and 28.9 mm and maintained to 9.04° and 34.4 mm at latest follow-up. Complications included deep wound infection (12.2%), durotomy (14.6%), implant related failures (14.6%), and temporary neurologic deficits (22.0%). Eight patients underwent further revision surgery at an average of 7.4 months after initial revision.

CONCLUSIONS: There are multiple surgical techniques to address symptomatic flatback syndrome in patients with previous Harrington rod instrumentation for adolescent idiopathic scoliosis. At an average of 27.7 months follow-up, pelvic incidence-lumbar lordosis mismatch and C7 sagittal vertical axis can be successfully corrected and maintained. However, complication and reoperation rates remain high.

Medienart:

E-Artikel

Erscheinungsjahr:

2022

Erschienen:

2022

Enthalten in:

Zur Gesamtaufnahme - volume:12

Enthalten in:

Global spine journal - 12(2022), 4 vom: 16. Mai, Seite 654-662

Sprache:

Englisch

Beteiligte Personen:

Louie, Philip K [VerfasserIn]
Iyer, Sravisht [VerfasserIn]
Khanna, Krishn [VerfasserIn]
Harada, Garrett K [VerfasserIn]
Khalid, Alina [VerfasserIn]
Gupta, Munish [VerfasserIn]
Burton, Douglas [VerfasserIn]
Shaffrey, Christopher [VerfasserIn]
Lafage, Renaud [VerfasserIn]
Lafage, Virginie [VerfasserIn]
Dewald, Christopher J [VerfasserIn]
Schwab, Frank J [VerfasserIn]
Kim, Han Jo [VerfasserIn]

Links:

Volltext

Themen:

Adjacent segment degeneration
Adult spinal deformity
Harrington rod instrumentation
Journal Article
Revision surgery

Anmerkungen:

Date Revised 16.07.2022

published: Print-Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.1177/2192568220960759

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM315711396