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Chang S, Wang Y, Liu Y, Wang C. Case Report: Lumbar spondylolisthesis with unilateral pedicle cleft and contralateral spondylolysis: a report of two cases and literature review. Front Surg 2024; 11:1357282. [PMID: 39006375 PMCID: PMC11242012 DOI: 10.3389/fsurg.2024.1357282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Accepted: 06/10/2024] [Indexed: 07/16/2024] Open
Abstract
Background The causes of pedicle cleft include congenital dysplasia and stress fractures, both of which are rare conditions. Secondary lumbar spondylolisthesis with combined unilateral pedicle cleft and contralateral spondylolysis is extremely rare and can be easily misdiagnosed. We report two cases with these conditions from different causes and discuss the diagnostic and therapeutic features in the context of the literature review. Case description Case 1 was a 58-year-old female with a stress fracture change at the left L5 pedicle. Case 2 was a 47-year-old female with a pedicle cleft due to hypoplasia of the left L5 pedicle. Both patients had a combined contralateral spondylolysis and Meyerding grade one lumbar spondylolisthesis, while neither had a clear history of lumbar trauma. After initial conservative treatments failed, both patients underwent a single-segment posterior lumbar interbody fusion with bilateral pedicle screw fixation. Both patients were followed up for more than 1 year postoperatively with clinical symptom relief and bony fusion at the pedicle cleft suggested by a CT scan. Conclusion Lumbar spondylolisthesis with unilateral pedicle cleft and contralateral spondylolysis is rarely reported and can be clinically misdiagnosed as simple spondylolisthesis with bilateral spondylolysis. There is no widely accepted surgical option for patients for whom conservative treatment has failed. Our experience suggests that good clinical results may be achieved by single-segment posterior interbody fusion and bilateral pedicle screw fixation. Precise screw placement into the deficient pedicle and sufficient exiting nerve decompression are prerequisites for the success of this surgical option.
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Affiliation(s)
- Sheng Chang
- Department of Spine Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yu Wang
- Department of Spine Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yong Liu
- Department of Spine Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Chao Wang
- Department of Spine Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
- Department of Surgery, Kashgar Hospital of Chinese Medicine, Kashgar, the Xinjiang Uygur Autonomous Region, China
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2
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Ramakrishna VA, Chamoli U, Larosa AG, Mukhopadhyay SC, Gangadhara Prusty B, Diwan AD. A biomechanical comparison of posterior fixation approaches in lumbar fusion using computed tomography based lumbosacral spine modelling. Proc Inst Mech Eng H 2023; 237:243-253. [PMID: 36651492 DOI: 10.1177/09544119221149119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Extreme lateral interbody fusion (XLIF) may be performed with a standalone interbody cage, or with the addition of unilateral or bilateral pedicle screws; however, decisions regarding supplemental fixation are predominantly based on clinical indicators. This study examines the impact of posterior supplemental fixation on facet micromotions, cage loads and load-patterns at adjacent levels in a L4-L5 XLIF at early and late fusion stages. CT data from an asymptomatic subject were segmented into anatomical regions and digitally stitched into a surface mesh of the lumbosacral spine (L1-S1). The interbody cage and posterior instrumentation (unilateral and bilateral) were inserted at L4-L5. The volumetric mesh was imported into finite element software for pre-processing, running nonlinear static solves and post-processing. Loads and micromotions at the index-level facets reduced commensurately with the extent of posterior fixation accompanying the XLIF, while load-pattern changes observed at adjacent facets may be anatomically dependent. In flexion at partial fusion, compressive stress on the cage reduced by 54% and 72% in unilateral and bilateral models respectively; in extension the reductions were 58% and 75% compared to standalone XLIF. A similar pattern was observed at full fusion. Unilateral fixation provided similar stability compared to bilateral, however there was a reduction in cage stress-risers with the bilateral instrumentation. No changes were found at adjacent discs. Posterior supplemental fixation alters biomechanics at the index and adjacent levels in a manner that warrants consideration alongside clinical information. Unilateral instrumentation is a more efficient option where the stability requirements and subsidence risk are not excessive.
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Affiliation(s)
- Vivek As Ramakrishna
- School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, Kensington, NSW, Australia.,Spine Labs, St. George & Sutherland Clinical School, University of New South Wales, Sydney, NSW, Australia.,School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, NSW, Australia
| | - Uphar Chamoli
- Spine Labs, St. George & Sutherland Clinical School, University of New South Wales, Sydney, NSW, Australia.,School of Biomedical Engineering, Faculty of Engineering and Information Technology, University of Technology Sydney, Ultimo, NSW, Australia
| | - Alessandro G Larosa
- School of Biomedical Engineering, Faculty of Engineering and Information Technology, University of Technology Sydney, Ultimo, NSW, Australia
| | - Subhas C Mukhopadhyay
- School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, NSW, Australia
| | - B Gangadhara Prusty
- School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, Kensington, NSW, Australia
| | - Ashish D Diwan
- Spine Labs, St. George & Sutherland Clinical School, University of New South Wales, Sydney, NSW, Australia.,Spine Service, Department of Orthopaedic Surgery, St. George Hospital Campus, Kogarah, NSW, Australia
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3
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Dave B, Degulmadi D, Krishnan A, Mayi S, Rai R, Raj A, Meena U. Congenital agenesis of lumbo-sacral pedicles with associated anomalies: case report with an emphasis on the use of O-arm, navigation in the management with literature review. EGYPTIAN JOURNAL OF NEUROSURGERY 2022. [DOI: 10.1186/s41984-022-00151-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Congenital spinal pedicle agenesis is rare. The majority of cases are asymptomatic. Few present with either low back pain or radiculopathy. Pedicle screw insertion may pose difficulties in view of abnormal anatomy.
Case presentation
Between Jan 2005 and March 2021, all the data were retrospectively reviewed for the cases operated for congenital anomalies. Three such cases were operated. Case 1 had bilateral agenesis of L5 vertebra with an ectopic kidney in right iliac fossa, absent uterus, absent ovaries and vaginal atresia. Case 2 had absent S1 pedicle with conjoint left L5 nerve root. Case 3 had hypoplastic left L5 pedicle, contained disc herniation, facetal arthropathy. Pedicle screws were placed using O-arm and navigation.
Conclusion
Pedicle agenesis increases the difficulty in pedicle screw fixation and fusion. Anomalous facet and conjoint nerve root need to be looked for intraoperatively. Use of O-arm and CT navigation is of great help in getting safe and accurate anchor points for screw placement avoiding neurological injury.
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Galieri G, Mazzucchi E, Pignotti F, Rinaldi P, De Santis V, La Rocca G, Sabatino G. Lumbo-sacral pedicular aplasia diagnosis and treatment: a systematic literature review and case report. Br J Neurosurg 2022:1-7. [PMID: 35393903 DOI: 10.1080/02688697.2022.2057431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 02/05/2022] [Accepted: 03/20/2022] [Indexed: 11/02/2022]
Abstract
Aplasia of the lumbar pedicle is a rare condition, frequently associated with low back pain. Its recognition is fundamental in the definition of the correct treatment. We performed a literature review in order to clarify how to best diagnose and treat this rare anatomical condition. A comprehensive literature search for studies published through October 2020 was performed, using the following algorithm: "aplasia" OR "aplastic" OR "hypoplasia" OR "hypoplastic" OR "absent" OR absence" AND "pedicle" AND "lumbar" OR "sacral" OR "lumbosacral". References from reviewed papers were further evaluated for the inclusion of other relevant studies. Eighteen studies were included in the systematic review for a total of 24 adult patients. Another case of left L5 pedicle aplasia treated at our hospital has been described and included in the present review. This anatomical condition may be suspected in plain x-Ray, but CT scan 3D reconstructions may help to confirm the diagnosis in equivocal cases. Low-back pain and radiculopathy are the main signs and symptoms. The treatment was described in 14 cases. Eight patients underwent surgical intervention. In cases with spondylolisthesis, fusion surgery was performed with different techniques, obtaining an excellent clinical outcome. Pedicular aplasia is a rare condition that must be recognized in patients with a low back. When it is associated with spondylolisthesis, fusion surgery should be the preferred option.
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Affiliation(s)
- G Galieri
- Institute of Neurosurgery, Fondazione Policlinico Universitario A. Gemelli IRCCS, Catholic University, Rome, Italy
- Department of Neurosurgery, Mater Olbia Hospital, Olbia, Italy
| | - E Mazzucchi
- Institute of Neurosurgery, Fondazione Policlinico Universitario A. Gemelli IRCCS, Catholic University, Rome, Italy
- Department of Neurosurgery, Mater Olbia Hospital, Olbia, Italy
| | - F Pignotti
- Institute of Neurosurgery, Fondazione Policlinico Universitario A. Gemelli IRCCS, Catholic University, Rome, Italy
- Department of Neurosurgery, Mater Olbia Hospital, Olbia, Italy
| | - P Rinaldi
- Unit of Radiology, Mater Olbia Hospital, Olbia, Italy
| | - V De Santis
- Institute of Orthopedics, Fondazione Policlinico Universitario Agostino Gemelli IRCSS, Catholic University of Rome, Rome, Italy
- Unit of Orthopedics, Mater Olbia Hospital, Olbia, Italy
| | - G La Rocca
- Institute of Neurosurgery, Fondazione Policlinico Universitario A. Gemelli IRCCS, Catholic University, Rome, Italy
- Department of Neurosurgery, Mater Olbia Hospital, Olbia, Italy
| | - G Sabatino
- Institute of Neurosurgery, Fondazione Policlinico Universitario A. Gemelli IRCCS, Catholic University, Rome, Italy
- Department of Neurosurgery, Mater Olbia Hospital, Olbia, Italy
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Lau D, Dalle Ore CL, Martin KW, Policy JF, Sun PP. Surgical management of congenital thoracic kyphosis and multilevel bilateral thoracic pedicle aplasia: case report. J Neurosurg Pediatr 2019; 23:16-21. [PMID: 30497201 DOI: 10.3171/2018.7.peds18222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 07/10/2018] [Indexed: 11/06/2022]
Abstract
Pedicle aplasia is an uncommon congenital anomaly most frequently involving the absence of a single pedicle at a single vertebral level. Bilateral pedicle aplasia at multiple levels is exceedingly rare and has only been described once previously in the literature. While single-level pedicle aplasia is often asymptomatic and discovered incidentally, pedicle aplasia of multiple levels may produce severe spinal deformities and neurological deficits. Due to the rarity of this condition, optimal management remains uncertain. In this case report, the authors describe the surgical management of a healthy 9-year-old boy who presented with frequent falls, difficulty running, and severe thoracic kyphotic deformity and was found to have bilateral pedicle aplasia from T3 to T9. A review of the literature regarding pedicle aplasia is also presented.
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Affiliation(s)
- Darryl Lau
- 1Department of Neurological Surgery, University of California San Francisco; and
| | - Cecilia L Dalle Ore
- 1Department of Neurological Surgery, University of California San Francisco; and
| | | | - James F Policy
- 3Department of Neurological Surgery, University of California San Francisco, Benioff Children's Hospital, Oakland, California
| | - Peter P Sun
- 3Department of Neurological Surgery, University of California San Francisco, Benioff Children's Hospital, Oakland, California
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Hsieh CS, Lee SH, Lee HC, Oh HS, Hwang BW, Park SJ, Chen JH. Congenital hypoplasia of the lumbar pedicle with spondylolisthesis: report of 2 cases. J Neurosurg Spine 2017; 26:430-434. [PMID: 28059687 DOI: 10.3171/2016.8.spine151137] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Congenital hypoplasia of the spinal pedicle is a rare condition. Previously reported cases were treated conservatively or with posterior instrumented fusion. However, the absence or hypoplasia of the lumbar pedicle may increase the difficulty of pedicle screw fixation and fusion. Herein, the authors describe 2 cases of rare adult congenital hypoplasia of the right lumbar pedicles associated with spondylolisthesis. The patients underwent anterior lumbar interbody fusion with a stand-alone cage as well as percutaneous pedicle screw fixation. This method was used to avoid the difficulties associated with pedicle screw fixation and to attain solid fusion. Both patients achieved satisfactory outcomes after a minimum of 2 years of follow-up. This method may be an alternative for patients with congenital hypoplasia of the lumbar spinal pedicle.
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Affiliation(s)
| | - Sang-Ho Lee
- Department of Neurosurgery, Wooridul Spine Hospital, Seoul
| | - Hyung Chang Lee
- Department of Cardiovascular Surgery, Wooridul Spine Hospital, Gimpo Airport, Seoul, Korea
| | | | | | | | - Jian-Han Chen
- Department of General Surgery, Buddhist Dalin Tzu Chi Hospital, Chia-Yi; and
- School of Medicine, Tzu Chi University, Hualien, Taiwan
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Lam SK, Sayama C, Harris DA, Briceño V, Luerssen TG, Jea A. Nationwide practice patterns in the use of recombinant human bone morphogenetic protein-2 in pediatric spine surgery as a function of patient-, hospital-, and procedure-related factors. J Neurosurg Pediatr 2014; 14:476-85. [PMID: 25171721 DOI: 10.3171/2014.7.peds1499] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT Current national patterns as a function of patient-, hospital-, and procedure-related factors, and complication rates in the use of recombinant human bone morphogenetic protein-2 (rhBMP-2) as an adjunct to the practice of pediatric spine surgery have scarcely been investigated. METHODS The authors conducted a cross-sectional study using data from the Healthcare Cost and Utilization Project Kids' Inpatient Database. Univariate and multivariate logistic regression were used to calculate unadjusted and adjusted odds ratios and 95% confidence intervals, and p values < 0.05 were considered to be statistically significant. RESULTS The authors identified 9538 hospitalizations in pediatric patients 20 years old or younger who had undergone spinal fusion in the US in 2009; 1541 of these admissions were associated with rhBMP-2 use. By multivariate logistic regression, the following factors were associated with rhBMP-2 use: patient age 15-20 years; length of hospital stay (adjusted odds ratio [aOR] 1.01, p = 0.017); insurance status (private [aOR 1.49, p < 0.001] compared with Medicaid); hospital type (nonchildren's hospital); region (Midwest [aOR 2.49, p = 0.008] compared with Northeast); spinal refusion (aOR 2.20, p < 0.001); spinal fusion approach/segment (anterior lumbar [aOR 1.73, p < 0.001] and occipitocervical [aOR 1.86, p = 0.013] compared with posterior lumbar); short segment length (aOR 1.42, p = 0.016) and midlength (aOR 1.44, p = 0.005) compared with long; and preoperative diagnosis (Scheuermann kyphosis [aOR 1.56, p < 0.017] and spondylolisthesis [aOR 1.93, p < 0.001]). CONCLUSIONS Use of BMP in pediatric spine procedures now comprises more than 10% of pediatric spinal fusion. Patient-related (age, insurance type, diagnosis); hospital-related (children's hospital vs general hospital, region in the US); and procedure-related (redo fusion, anterior vs posterior approach, spinal levels, number of levels fused) factors are associated with the variation in BMP use in the US.
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Affiliation(s)
- Sandi K Lam
- Neuro-Spine Program, Division of Pediatric Neurosurgery, Texas Children's Hospital, and Department of Neurosurgery, Baylor College of Medicine, Houston, Texas
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8
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Payer M, Tessitore E. L5/S1 disc herniation and S1 pedicle aplasia: case report and review of the literature. Acta Neurochir (Wien) 2014; 156:757-8. [PMID: 24510001 DOI: 10.1007/s00701-014-2005-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Accepted: 01/18/2014] [Indexed: 11/24/2022]
Affiliation(s)
- Michael Payer
- Neurosurgical Department, Hirslanden Klinik, Witellikerstrasse 40, 8032, Zürich, Switzerland,
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