A review of the hemivertebrae and hemivertebra resection

Bao, Beixi; Yan, Hui; Tang, Jiaguang

doi:10.1080/02688697.2020.1859088

Cited by 10 publications

(15 citation statements)

References 68 publications

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“…The incoherent displacement with irregular directions and movements of somite cells corroborate the unusual development of HV (Dayer et al, 2017). Environmental causes, such as carbon monoxide inhalation, gestational diabetes, and the use of antiepileptic drugs, may favor this anomalous event (Bao et al, 2020).…”

Section: Introductionmentioning

confidence: 58%

“…The occurrence of VH ranges from one to ten in every ten thousand live births, and some studies indicate a higher frequency in males; however, other studies have shown that the occurrence is equal between the two sexes (Johal et al, 2016). The incidence among families varies between 1% and 5% (Bao et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…HV presents different consequences according to the growth of the spine, thus depending on the type, growth capacity of the individual, and place of involvement. HV has three main complications: scoliosis, hyperlordosis, and hyperkyphosis, with scoliosis being the most common (Bao et al, 2020). Scoliosis is characterized by abnormal lateral curvature of the spine (Depaola and Cuddihy, 2020).…”

Section: Introductionmentioning

confidence: 99%

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Hemivertebra: A Case Report

Costa¹,

Fernandes²,

Gomes³

2023

RSM

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The spine forms the center of the human skeleton, and is composed of 33 vertebrae divided into cervical, thoracic, lumbar, sacral, and coccygeal regions. Hemivertebra (HV) is a malformation of this structure, with congenital scoliosis being the most recurrent complication. Scoliosis is characterized by abnormal lateral curvature of the spine. The prognosis of HV is related to the region of involvement and the associated complications. The etiology is subsequent to an error in the center of chondrification of the vertebra during gestation by incoherent displacement of cells during embryogenesis. Late treatment can lead to spinal deformities and altered anatomical and systemic response. This study aimed to describe a case of hemivertebra and its evolution.

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Section: Introductionmentioning

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hemivertebra: A Case Report

Costa¹,

Fernandes²,

Gomes³

2023

RSM

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“…17,[20][21][22]27,28 Complications needing revision surgery after HV resection and PSF in the literature are reported to range from 3% to 37% and include pedicle fractures, screw dislodgement, rod breakage, PJK, wound infections, transient muscle weakness, neurophysiological complications and deformity progression. 10,17,18,20,21,23,[27][28][29] In our cohort, 27% (7/26) of patients undergoing 2-level fusion versus 22% (6/27) of patients undergoing > 2-level fusion had a surgical complication which resulted in 8 unplanned revision surgeries for each group. The incidence of PJK after HV resection and PSFI is generally low.…”

Section: Discussionmentioning

confidence: 74%

Posterior-only Resection of Single Hemivertebrae With 2-Level Versus >2-Level Fusion: Can We Improve Outcomes?

Gómez¹,

Ge²,

Boden³

et al. 2022

Journal of Pediatric Orthopaedics

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Background: The outcomes of congenital scoliosis (CS) patients undergoing hemivertebra (HV) resection surgery with a 2-level fusion versus a >2-level fusion are unclear. We hypothesized that CS patients undergoing HV resection and a >2-level fusion have decreased curve progression and reoperation rates compared with 2-level fusions. Methods: Retrospective review of prospectively collected data from a multicenter scoliosis database. Fifty-three CS patients (average age 4.5, range 1.2 to 10.9 y) at index surgery were included. Radiographic and surgical parameters, complications, as well as revision surgery rates were tracked at a minimum of 2-year follow-up. Results: Twenty-six patients had a 2-level fusion while 27 patients had a >2-level fusion with similar age and body mass index between groups. The HV was located in the lumbar spine for 69% (18/26) 2-level fusions and 30% (8/27) >2-level fusions (P=0.006). Segmental HV scoliosis curve was smaller in 2-level fusions compared to >2-level fusions preoperatively (38 vs. 50 degrees, P=0.016) and at follow-up (25 vs. 34 degrees, P=0.038). Preoperative T2-T12 (28 vs. 41 degrees, P=0.013) and segmental kyphosis (11 vs. 23 degrees, P=0.046) were smaller in 2-level fusions, but did not differ significantly at postoperative follow-up (32 vs. 39 degrees, P=0.22; 13 vs. 11 degrees, P=0.64, respectively). Furthermore, the 2 groups did not significantly differ in terms of surgical complications (27% vs. 22%, P=0.69; 2-level fusion vs. >2-level fusion, respectively), unplanned revision surgery rate (23% vs. 22%, 0.94), growing rod placement or extension of spinal fusion (15% vs. 15%, P=0.95), or health-related quality of life per the EOS-Questionnaire 24 (EOSQ-24). Comparison of patients with or without the need for growing rod placement or posterior spinal fusion revealed no significant differences in all parameters analyzed. Conclusions: Two-level and >2-level fusions can control congenital curves successfully. No differences existed in curve correction, proximal junctional kyphosis or complications between short and long-level fusion after HV resection. Both short and long level fusions are viable options and generate similar risk of revision. The decision should be individualized by patient and surgeon.

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“…In this case, the malformation as shown on the CT-scan showed a fully segmented hemivertebra, as in agreement with the study from Bao B et al, fully segmented hemivertebra is the most common type among the others. However, fully segmented types of hemivertebra which has Y-shaped of disc in coronal view has potential for worsening because of asymmetric growth compared with other types [13] .…”

Section: Discussionmentioning

confidence: 99%