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Technical Consideration for TLIF Cage Retrieval and Deformity Correction With Anterior Interbody Fusion in Lumbar Revision Surgeries.

Abstract

INTRODUCTION

Symptomatic pseudoarthrosis after transforaminal lumbar interbody fusion (TLIF) could result in sagittal malalignment. Revision posterior surgery with TLIF cage removal poses a challenge intraoperatively. The authors have proposed salvage anterior approach for cage removal and have discussed unique experience with the correction in their deformity patients.

METHODS

All patients with symptoms of clinical deformity or symptomatic pseudoarthrosis operated from January of 2012 to February of 2018 were included in the study. TLIF cage removal followed by anterior lumbar interbody fusion (ALIF) surgery was performed in all patients. Radiographic sagittal parameters including thoracic kyphosis (TK; T4-T12), sagittal vertical axis (SVA), T1 pelvic angle (TPA), lumbar lordosis (LL), the mismatch between pelvic incidence (PI) and LL (PI-LL), sacral slope (SS), pelvic tilt (PT), and PI were analyzed.

RESULTS

6 patients (mean age of 57 years, 83% female) underwent TLIF retrieval through anterior approach and ALIF with hyperlordotic cages (HLCs), followed by posterior spinal fusion surgery. Described technique entails use of tailored instruments with sequential gentle distraction of end plates with TLIF spreader could facilitate in the cage removal. Mean number of interbody levels fused pre as well as post were 1.5. The radiographic sagittal parameters from preoperative versus postoperative standing were as follows: T4-T12 TK, 16° vs. 37.6°; LL, -25° vs. -47.6°; PT, 36° vs. 26°; PI-LL, 35° vs. 12.4°; SVA, 12° vs. 5.6°; and TPA, 44° vs. 25°, with p<.001. Mean number of instrumented level fused were 8.1. Using linear regression analysis, change from pre-to postoperative standing in LL predicted pre-to postoperative change in SVA and TPA for global correction (R= -0.30 and -0.80, respectively).

CONCLUSIONS

Anterior approach is a suitable technique for TLIF cage removal while preserving the end plates for subsequent optimal interbody fusion at the index level in symptomatic pseudoarthrosis patients or those with clinical deformity. ALIF with HLCs with or without Ponte osteotomy can restore segmental and overall sagittal alignment.

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  • Authors+Show Affiliations

    ,

    Department of Orthopedic Surgery, University of Pennsylvania Hospital, 235 S 8th St., Washington West Bldg, 800 Spruce Street, Philadelphia, PA 19107, USA; Department of Neurosurgery, University of Pennsylvania Hospital, 235 S 8th St., Washington West Bldg, 800 Spruce Street, Philadelphia, PA 19107, USA.

    ,

    Department of Orthopedic Surgery, University of Pennsylvania Hospital, 235 S 8th St., Washington West Bldg, 800 Spruce Street, Philadelphia, PA 19107, USA.

    Department of Orthopedic Surgery, University of Pennsylvania Hospital, 235 S 8th St., Washington West Bldg, 800 Spruce Street, Philadelphia, PA 19107, USA. Electronic address: arletvincent@gmail.com.

    Source

    Spine deformity 7:4 2019 Jul pg 633-640

    Pub Type(s)

    Journal Article

    Language

    eng

    PubMed ID

    31202382

    Citation

    Janjua, M Burhan, et al. "Technical Consideration for TLIF Cage Retrieval and Deformity Correction With Anterior Interbody Fusion in Lumbar Revision Surgeries." Spine Deformity, vol. 7, no. 4, 2019, pp. 633-640.
    Janjua MB, Ackshota N, Arlet V. Technical Consideration for TLIF Cage Retrieval and Deformity Correction With Anterior Interbody Fusion in Lumbar Revision Surgeries. Spine Deform. 2019;7(4):633-640.
    Janjua, M. B., Ackshota, N., & Arlet, V. (2019). Technical Consideration for TLIF Cage Retrieval and Deformity Correction With Anterior Interbody Fusion in Lumbar Revision Surgeries. Spine Deformity, 7(4), pp. 633-640. doi:10.1016/j.jspd.2018.10.004.
    Janjua MB, Ackshota N, Arlet V. Technical Consideration for TLIF Cage Retrieval and Deformity Correction With Anterior Interbody Fusion in Lumbar Revision Surgeries. Spine Deform. 2019;7(4):633-640. PubMed PMID: 31202382.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Technical Consideration for TLIF Cage Retrieval and Deformity Correction With Anterior Interbody Fusion in Lumbar Revision Surgeries. AU - Janjua,M Burhan, AU - Ackshota,Nissim, AU - Arlet,Vincent, PY - 2018/04/08/received PY - 2018/08/30/revised PY - 2018/10/13/accepted PY - 2019/6/17/entrez PY - 2019/6/17/pubmed PY - 2019/6/17/medline KW - Anterior lumbar interbody fusion KW - Hyperlordotic interbody cage KW - Spinal deformity correction surgery KW - Transforaminal lumbar interbody cage retrieval SP - 633 EP - 640 JF - Spine deformity JO - Spine Deform VL - 7 IS - 4 N2 - INTRODUCTION: Symptomatic pseudoarthrosis after transforaminal lumbar interbody fusion (TLIF) could result in sagittal malalignment. Revision posterior surgery with TLIF cage removal poses a challenge intraoperatively. The authors have proposed salvage anterior approach for cage removal and have discussed unique experience with the correction in their deformity patients. METHODS: All patients with symptoms of clinical deformity or symptomatic pseudoarthrosis operated from January of 2012 to February of 2018 were included in the study. TLIF cage removal followed by anterior lumbar interbody fusion (ALIF) surgery was performed in all patients. Radiographic sagittal parameters including thoracic kyphosis (TK; T4-T12), sagittal vertical axis (SVA), T1 pelvic angle (TPA), lumbar lordosis (LL), the mismatch between pelvic incidence (PI) and LL (PI-LL), sacral slope (SS), pelvic tilt (PT), and PI were analyzed. RESULTS: 6 patients (mean age of 57 years, 83% female) underwent TLIF retrieval through anterior approach and ALIF with hyperlordotic cages (HLCs), followed by posterior spinal fusion surgery. Described technique entails use of tailored instruments with sequential gentle distraction of end plates with TLIF spreader could facilitate in the cage removal. Mean number of interbody levels fused pre as well as post were 1.5. The radiographic sagittal parameters from preoperative versus postoperative standing were as follows: T4-T12 TK, 16° vs. 37.6°; LL, -25° vs. -47.6°; PT, 36° vs. 26°; PI-LL, 35° vs. 12.4°; SVA, 12° vs. 5.6°; and TPA, 44° vs. 25°, with p<.001. Mean number of instrumented level fused were 8.1. Using linear regression analysis, change from pre-to postoperative standing in LL predicted pre-to postoperative change in SVA and TPA for global correction (R= -0.30 and -0.80, respectively). CONCLUSIONS: Anterior approach is a suitable technique for TLIF cage removal while preserving the end plates for subsequent optimal interbody fusion at the index level in symptomatic pseudoarthrosis patients or those with clinical deformity. ALIF with HLCs with or without Ponte osteotomy can restore segmental and overall sagittal alignment. SN - 2212-1358 UR - https://www.unboundmedicine.com/medline/citation/31202382/Technical_Consideration_for_TLIF_Cage_Retrieval_and_Deformity_Correction_With_Anterior_Interbody_Fusion_in_Lumbar_Revision_Surgeries L2 - https://linkinghub.elsevier.com/retrieve/pii/S2212-134X(18)30275-2 DB - PRIME DP - Unbound Medicine ER -