1.Distinct Recovery Patterns After Transforaminal Lumbar Interbody Fusion: Comparing Minimally Invasive and Open Approaches Using Mixed-Effects Segmented Regression
Tomoyuki ASADA ; Eric R. ZHAO ; Adin M. EHRLICH ; Adrian LUI ; Andrea PEZZI ; Sereen HALAYQEH ; Tarek HARHASH ; Olivia C. TUMA ; Kasra ARAGHI ; Todd J. ALBERT ; James FARMER ; Russel C. HUANG ; Harvinder SANDHU ; Han Jo KIM ; Francis C. LOVECCHIO ; James E. DOWDELL ; Sravisht IYER ; Sheeraz A. QURESHI
Neurospine 2025;22(1):3-13
Objective:
While minimally invasive-transforaminal lumbar interbody fusion (MIS-TLIF) has shown superiority in key clinical metrics over the open approach, evidence regarding patient-reported outcomes remains limited. This study compared postoperative recovery trajectories and symptomatic improvement phases between MIS and open TLIF.
Methods:
This retrospective review included patients who underwent single-level MIS or open TLIF. Oswestry Disability Index (ODI) and Numerical Rating Scale (NRS) for back and leg pain were collected preoperatively and postoperatively. Segmented regression analysis with mixed-effects modeling, allowing for identification of distinct recovery phases, compared symptomatic trends between approaches.
Results:
Of 324 patients (268 MIS, 56 open), baseline demographics were similar except for greater preoperative leg pain in the MIS group (NRS: 6.0 vs. 5.0, p = 0.027). A segmented regression model identified 4 ODI recovery phases: postoperative disability phase (PDP, day 0 to 13), early improvement phase (day 13 to 28), late improvement phase (day 28 to 110), and plateau phase (later than day 110). The MIS group exhibited significantly lower disability exacerbation during PDP (β = 0.93 vs. 1.42 points per day, p = 0.008). Additionally, the plateau of NRS back occurred significantly earlier in the MIS group than in the open group (MIS, 26.7 ± 2.6 days vs. open, 51.7 ± 6.6 days, p < 0.001).
Conclusion
MIS-TLIF resulted in lower postoperative disability during the first 2 weeks compared to the open approach. Furthermore, low back pain achieved an earlier plateau in back pain by about 4 weeks in the MIS approach.
2.Distinct Recovery Patterns After Transforaminal Lumbar Interbody Fusion: Comparing Minimally Invasive and Open Approaches Using Mixed-Effects Segmented Regression
Tomoyuki ASADA ; Eric R. ZHAO ; Adin M. EHRLICH ; Adrian LUI ; Andrea PEZZI ; Sereen HALAYQEH ; Tarek HARHASH ; Olivia C. TUMA ; Kasra ARAGHI ; Todd J. ALBERT ; James FARMER ; Russel C. HUANG ; Harvinder SANDHU ; Han Jo KIM ; Francis C. LOVECCHIO ; James E. DOWDELL ; Sravisht IYER ; Sheeraz A. QURESHI
Neurospine 2025;22(1):3-13
Objective:
While minimally invasive-transforaminal lumbar interbody fusion (MIS-TLIF) has shown superiority in key clinical metrics over the open approach, evidence regarding patient-reported outcomes remains limited. This study compared postoperative recovery trajectories and symptomatic improvement phases between MIS and open TLIF.
Methods:
This retrospective review included patients who underwent single-level MIS or open TLIF. Oswestry Disability Index (ODI) and Numerical Rating Scale (NRS) for back and leg pain were collected preoperatively and postoperatively. Segmented regression analysis with mixed-effects modeling, allowing for identification of distinct recovery phases, compared symptomatic trends between approaches.
Results:
Of 324 patients (268 MIS, 56 open), baseline demographics were similar except for greater preoperative leg pain in the MIS group (NRS: 6.0 vs. 5.0, p = 0.027). A segmented regression model identified 4 ODI recovery phases: postoperative disability phase (PDP, day 0 to 13), early improvement phase (day 13 to 28), late improvement phase (day 28 to 110), and plateau phase (later than day 110). The MIS group exhibited significantly lower disability exacerbation during PDP (β = 0.93 vs. 1.42 points per day, p = 0.008). Additionally, the plateau of NRS back occurred significantly earlier in the MIS group than in the open group (MIS, 26.7 ± 2.6 days vs. open, 51.7 ± 6.6 days, p < 0.001).
Conclusion
MIS-TLIF resulted in lower postoperative disability during the first 2 weeks compared to the open approach. Furthermore, low back pain achieved an earlier plateau in back pain by about 4 weeks in the MIS approach.
3.Distinct Recovery Patterns After Transforaminal Lumbar Interbody Fusion: Comparing Minimally Invasive and Open Approaches Using Mixed-Effects Segmented Regression
Tomoyuki ASADA ; Eric R. ZHAO ; Adin M. EHRLICH ; Adrian LUI ; Andrea PEZZI ; Sereen HALAYQEH ; Tarek HARHASH ; Olivia C. TUMA ; Kasra ARAGHI ; Todd J. ALBERT ; James FARMER ; Russel C. HUANG ; Harvinder SANDHU ; Han Jo KIM ; Francis C. LOVECCHIO ; James E. DOWDELL ; Sravisht IYER ; Sheeraz A. QURESHI
Neurospine 2025;22(1):3-13
Objective:
While minimally invasive-transforaminal lumbar interbody fusion (MIS-TLIF) has shown superiority in key clinical metrics over the open approach, evidence regarding patient-reported outcomes remains limited. This study compared postoperative recovery trajectories and symptomatic improvement phases between MIS and open TLIF.
Methods:
This retrospective review included patients who underwent single-level MIS or open TLIF. Oswestry Disability Index (ODI) and Numerical Rating Scale (NRS) for back and leg pain were collected preoperatively and postoperatively. Segmented regression analysis with mixed-effects modeling, allowing for identification of distinct recovery phases, compared symptomatic trends between approaches.
Results:
Of 324 patients (268 MIS, 56 open), baseline demographics were similar except for greater preoperative leg pain in the MIS group (NRS: 6.0 vs. 5.0, p = 0.027). A segmented regression model identified 4 ODI recovery phases: postoperative disability phase (PDP, day 0 to 13), early improvement phase (day 13 to 28), late improvement phase (day 28 to 110), and plateau phase (later than day 110). The MIS group exhibited significantly lower disability exacerbation during PDP (β = 0.93 vs. 1.42 points per day, p = 0.008). Additionally, the plateau of NRS back occurred significantly earlier in the MIS group than in the open group (MIS, 26.7 ± 2.6 days vs. open, 51.7 ± 6.6 days, p < 0.001).
Conclusion
MIS-TLIF resulted in lower postoperative disability during the first 2 weeks compared to the open approach. Furthermore, low back pain achieved an earlier plateau in back pain by about 4 weeks in the MIS approach.
4.Distinct Recovery Patterns After Transforaminal Lumbar Interbody Fusion: Comparing Minimally Invasive and Open Approaches Using Mixed-Effects Segmented Regression
Tomoyuki ASADA ; Eric R. ZHAO ; Adin M. EHRLICH ; Adrian LUI ; Andrea PEZZI ; Sereen HALAYQEH ; Tarek HARHASH ; Olivia C. TUMA ; Kasra ARAGHI ; Todd J. ALBERT ; James FARMER ; Russel C. HUANG ; Harvinder SANDHU ; Han Jo KIM ; Francis C. LOVECCHIO ; James E. DOWDELL ; Sravisht IYER ; Sheeraz A. QURESHI
Neurospine 2025;22(1):3-13
Objective:
While minimally invasive-transforaminal lumbar interbody fusion (MIS-TLIF) has shown superiority in key clinical metrics over the open approach, evidence regarding patient-reported outcomes remains limited. This study compared postoperative recovery trajectories and symptomatic improvement phases between MIS and open TLIF.
Methods:
This retrospective review included patients who underwent single-level MIS or open TLIF. Oswestry Disability Index (ODI) and Numerical Rating Scale (NRS) for back and leg pain were collected preoperatively and postoperatively. Segmented regression analysis with mixed-effects modeling, allowing for identification of distinct recovery phases, compared symptomatic trends between approaches.
Results:
Of 324 patients (268 MIS, 56 open), baseline demographics were similar except for greater preoperative leg pain in the MIS group (NRS: 6.0 vs. 5.0, p = 0.027). A segmented regression model identified 4 ODI recovery phases: postoperative disability phase (PDP, day 0 to 13), early improvement phase (day 13 to 28), late improvement phase (day 28 to 110), and plateau phase (later than day 110). The MIS group exhibited significantly lower disability exacerbation during PDP (β = 0.93 vs. 1.42 points per day, p = 0.008). Additionally, the plateau of NRS back occurred significantly earlier in the MIS group than in the open group (MIS, 26.7 ± 2.6 days vs. open, 51.7 ± 6.6 days, p < 0.001).
Conclusion
MIS-TLIF resulted in lower postoperative disability during the first 2 weeks compared to the open approach. Furthermore, low back pain achieved an earlier plateau in back pain by about 4 weeks in the MIS approach.
5.Advancing the role of higher education institutions in attaining the health-related sustainable development goals: Proceedings of the 53rd Asia Pacific Academic Consortium for Public Health, 21-23 September 2022, Philippines
Maria Margarita M. Lota ; Paul Michael R. Hernandez ; Vivien Fe F. Fadrilan-camacho ; Fresthel Monica M. Climacosa ; Francis Andrew B. Cube ; Kim Leonard G. Dela luna ; Crystal Amiel M. Estrada ; Emerito Jose A. Faron ; Fernando B. Garcia jr. ; Myra S. Mistica ; Frederick S. Nieto ; Sharon Yvette Angelina M. Villanueva ; Vicente Y. Belizario jr.
Acta Medica Philippina 2025;59(4):10-13
Higher Education Institutions (HEIs) are acknowledged as key drivers in realizing health-related Sustainable Development Goals (SDGs). The University of the Philippines Manila, College of Public Health (UP CPH) together with the Asia-Pacific Academic Consortium for Public Health (APACPH), hosted the 53rd APACPH International Conference last 21-23 September 2022. The conference discussed current issues relating to the attainment of SDGs and promoted collaboration of leading academic institutions and other stakeholders in addressing various public health challenges. The conference revolved around the challenges and opportunities in attaining health-related SDGs, and the good practices and roles of HEIs in addressing health disparities. The lack of certificati on framework of public health tertiary programs, pedagogy and infrastructure, and ambiguous roles and network of public health professionals were discussed. The conference served as a platform for discussing potential resolutions and ways forward in addressing these challenges. Opportunities for improvement such as updating of policies and curricula, strengthening of internship and community engagement programs, establishment of capacity-building partnerships and programs, and developing multidisciplinary-competent faculty and students were identified. This paper providesthe highlights of the conference focusing on the good practices and roles of HEIs in addressing health disparities, the impact of COVID-19 pandemic, and other issues and challenges in attaining SDGs.
Human ; Sustainable Development ; Sustainable Development Goals ; Public Health
6.Distinct Recovery Patterns After Transforaminal Lumbar Interbody Fusion: Comparing Minimally Invasive and Open Approaches Using Mixed-Effects Segmented Regression
Tomoyuki ASADA ; Eric R. ZHAO ; Adin M. EHRLICH ; Adrian LUI ; Andrea PEZZI ; Sereen HALAYQEH ; Tarek HARHASH ; Olivia C. TUMA ; Kasra ARAGHI ; Todd J. ALBERT ; James FARMER ; Russel C. HUANG ; Harvinder SANDHU ; Han Jo KIM ; Francis C. LOVECCHIO ; James E. DOWDELL ; Sravisht IYER ; Sheeraz A. QURESHI
Neurospine 2025;22(1):3-13
Objective:
While minimally invasive-transforaminal lumbar interbody fusion (MIS-TLIF) has shown superiority in key clinical metrics over the open approach, evidence regarding patient-reported outcomes remains limited. This study compared postoperative recovery trajectories and symptomatic improvement phases between MIS and open TLIF.
Methods:
This retrospective review included patients who underwent single-level MIS or open TLIF. Oswestry Disability Index (ODI) and Numerical Rating Scale (NRS) for back and leg pain were collected preoperatively and postoperatively. Segmented regression analysis with mixed-effects modeling, allowing for identification of distinct recovery phases, compared symptomatic trends between approaches.
Results:
Of 324 patients (268 MIS, 56 open), baseline demographics were similar except for greater preoperative leg pain in the MIS group (NRS: 6.0 vs. 5.0, p = 0.027). A segmented regression model identified 4 ODI recovery phases: postoperative disability phase (PDP, day 0 to 13), early improvement phase (day 13 to 28), late improvement phase (day 28 to 110), and plateau phase (later than day 110). The MIS group exhibited significantly lower disability exacerbation during PDP (β = 0.93 vs. 1.42 points per day, p = 0.008). Additionally, the plateau of NRS back occurred significantly earlier in the MIS group than in the open group (MIS, 26.7 ± 2.6 days vs. open, 51.7 ± 6.6 days, p < 0.001).
Conclusion
MIS-TLIF resulted in lower postoperative disability during the first 2 weeks compared to the open approach. Furthermore, low back pain achieved an earlier plateau in back pain by about 4 weeks in the MIS approach.
7.Hounsfield units and vertebral bone quality score for predicting mechanical complications after adult spinal deformity surgery: a systematic review and meta-analysis
Hiroyuki NAKARAI ; Gregory S. KAZARIAN ; Francis C. LOVECCHIO ; Han Jo KIM
Asian Spine Journal 2024;18(5):719-730
The purpose of this systematic review and meta-analysis is to assess existing literature and determine the association between the Hounsfield unit (HU) value and the vertebral body quality (VBQ) score with mechanical complications (MCs) after adult spinal deformity (ASD) surgery. Although bone quality is considered an increasingly important factor for MCs after ASD surgery, the utility of the HU value assessed by computed tomography and the VBQ score assessed by magnetic resonance imaging remains unknown. A systematic review of PubMed, Embase, and Cochrane Library databases was performed to find studies evaluating the association between the HU value and the VBQ score with MCs after ASD surgery. In the subsequent meta-analysis, MC outcomes were combined using a random-effects model, and the standardized mean difference and 95% confidence interval were calculated. The final analysis included a total of 20 studies. Nineteen studies reported HU values, and two studies reported VBQ scores. Proximal junctional kyphosis/failure (PJK/PJF) was reported as the MC in 16 studies, whereas other MCs were included in 6 studies. Six studies with a pool of 506 patients with ASD revealed that preoperative HU values at the upper instrumented vertebra (UIV) and UIV+1 were significantly lower in patients with PJK/PJF (standardized mean difference, −0.74; 95% confidence interval, −1.09 to −0.40). Three studies suggested an cutoff HU value of approximately ≤120, yielding a pooled sensitivity of 0.77, specificity of 0.67, and diagnostic odds ratio of 7.01. However, two studies reported conflicting results on the relationship between the VBQ score and PJK/PJF. Low HU values predicted the risk of certain MCs, particularly PJK/PJF, after ASD surgery. An HU value of <120 should alert surgeons to be cautious about the postoperative occurrence of PJK/PJF. Future studies are needed to validate the cutoff HU value and evaluate the utility of the VBQ score.
8.Comment on "Comparison between the coronal diameters of the cervical spinal canal and spinal cord measured using computed tomography and magnetic resonance imaging in Korean patients"
Sunmin KIM ; Sang-il CHO ; Dong Hyuck KIM ; Francis Sahngun NAHM
Korean Journal of Anesthesiology 2023;76(3):261-262
9.The principles of presenting statistical results using figures
Jae Hong PARK ; Dong Kyu LEE ; Hyun KANG ; Jong Hae KIM ; Francis Sahngun NAHM ; EunJin AHN ; Junyong IN ; Sang Gyu KWAK ; Chi-Yeon LIM
Korean Journal of Anesthesiology 2022;75(2):139-150
Tables and figures are commonly adopted methods for presenting specific data or statistical analysis results. Figures can be used to display characteristics and distributions of data, allowing for intuitive understanding through visualization and thus making it easier to interpret the statistical results. To maximize the positive aspects of figure presentation and increase the accuracy of the content, in this article, the authors will describe how to choose an appropriate figure type and the necessary components to include. Additionally, this article includes examples of figures that are commonly used in research and their essential components using virtual data.
10.A Comparative Study of an Anti-Thrombotic Small-Diameter Vascular Graft with Commercially Available e-PTFE Graft in a Porcine Carotid Model
Kyo Seon LEE ; Mukhammad KAYUMOV ; Gladys A. EMECHEBE ; Do-Wan KIM ; Hwa-Jin CHO ; Yun-Jin JEONG ; Dong-Weon LEE ; Jun-Kyu PARK ; Chan-Hee PARK ; Cheol-Sang KIM ; Francis O. OBIWELUOZOR ; In-Seok JEONG
Tissue Engineering and Regenerative Medicine 2022;19(3):537-551
BACKGROUND:
We have designed a reinforced drug-loaded vascular graft composed of polycaprolactone (PCL) and polydioxanone (PDO) via a combination of electrospinning/3D printing approaches. To evaluate its potential for clinical application, we compared the in vivo blood compatibility and performance of PCL/PDO ? 10%DY grafts doped with an antithrombotic drug (dipyridamole) with a commercial expanded polytetrafluoroethylene (e-PTFE) graft in a porcine model.
METHODS:
A total of 10 pigs (weight: 25–35 kg) were used in this study. We made a new 5-mm graft with PCL/PDO composite nanofiber via the electrospinning technique. We simultaneously implanted a commercially available e-PTFE graft (n = 5) and our PCL/PDO ? 10%DY graft (n = 5) into the carotid arteries of the pigs. No anticoagulant/antiplatelet agent was administered during the follow-up period, and ultrasonography was performed weekly to confirm the patency of the two grafts in vivo. Four weeks later, we explanted and compared the performance of the two grafts by histological analysis and scanning electron microscopy (SEM).
RESULTS:
No complications, such as sweating on the graft or significant bleeding from the needle hole site, were seen in the PCL/PDO ? 10%DY graft immediately after implantation. Serial ultrasonographic examination and immunohistochemical analysis demonstrated that PCL/PDO ? 10%DY grafts showed normal physiological blood flow and minimal lumen reduction, and pulsed synchronously with the native artery at 4 weeks after implantation. However, all e-PTFE grafts occluded within the study period. The luminal surface of the PCL/PDO ? 10%DY graft in the transitional zone was fully covered with endothelial cells as observed by SEM.
CONCLUSION
The PCL/PDO ? 10%DY graft was well tolerated, and no adverse tissue reaction was observed in porcine carotid models during the short-term follow-up. Colonization of the graft by host endothelial and smooth muscle cells coupled with substantial extracellular matrix production marked the regenerative capability. Thus, this material may be an ideal substitute for vascular reconstruction and bypass surgeries. Long-term observations will be necessary to determine the anti-thrombotic and remodeling potential of this device.


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