Asst Prof Tay Kae Sian

Dr Tay Kae Sian currently serves as a Consultant Orthopaedic Surgeon and the Director of Foot and Ankle Surgery in Singapore General Hospital. His clinical expertise includes foot and ankle surgery, lower limb fractures, joint replacements, deformity correction, limb lengthening, bone infection, and the use of the Ilizarov external fixator.

Dr Tay completed his specialist training in Orthopaedic Surgery in Singapore, and has been appointed a Fellow of the Royal College of Surgeons of Edinburgh. He has completed fellowships with advanced training in complex foot and ankle surgery and in lower limb reconstruction and deformity correction at the Royal National Orthopaedic Hospital, and the Hull Royal Infirmary respectively, in the UK.

Outside of clinical work, Dr Tay also contributes to medical education by teaching in medical schools as well as surgeons in post-graduate training programs. He firmly believes in mentorship of future generations of doctors. He has been appointed to teaching positions in all 3 local medical schools, and oversees the Foot and Ankle Clinical Fellowship Program at SGH.

Dr Tay is also actively involved in orthopaedic research. He believes in the power of clinical research to change practices and improve outcomes for patients. He has published and presented multiple studies worldwide, in conferences and medical journals, and has been invited to give multiple talks at international conferences. 

• Fellowship in Complex Deformity Correction in Foot and Ankle Surgery (Royal National Orthopaedic Hospital, Stanmore, UK)
• Fellowship in Lower Limb Reconstruction and Deformity Correction (Hull Royal Infirmary, UK)
• Fellow of the Royal College of Surgeons (Edinburgh) (Orthopaedic Surgery)
• Master of Medicine (Orthopaedic Surgery)
• Member of the Royal College of Surgeons (Edinburgh) 
• Bachelor of Medicine, Bachelor of Surgery  (Singapore)

• Fellow, Royal College of Surgeons of Edinburgh
• Member, Singapore Orthopaedic Association
• Member, Orthopaedic Foot and Ankle Society of SingaporeEXCO Member, Singapore Limb Reconstruction Society
• Member, AO Trauma

• SGH Service With A Heart Award 2025
• Singhealth Residency Outstanding Faculty Award 2024
• SingHealth 10 Years Long Service Award 2021
• SGH Fellowship Award 2021
• Singhealth Academy Certificate of Appreciation for Education 2018
• Singhealth Outstanding Resident Award 2014/2015, 2018/2019
• EUROSPINE Travel Grant, Sep 2015

• Foot and Ankle Surgery
• Minimally Invasive Surgery
• Joint Replacements
• Bone Infection
• Limb Lengthening
• Deformity Correction

1. Radhakrishnan R, Lim JTE, Padki A, Toh RX, Tay KS, Lee KH, Yeo NEM. Proximal fibular osteotomy in conjunction with supramalleolar osteotomy in concurrent management of ankle and knee osteoarthritis: A case series. J ISAKOS. 2025 Jun;12:100895. doi: 10.1016/j.jisako.2025.100895. 
2. Boey JJE, Toh RX, Loh YC, Zhang C, Ling RR, Li ZX, Mohamed Buhary KS, Tay KS. Complications of total ankle arthroplasty versus ankle arthrodesis: A systematic review and meta-analysis with trial sequential analysis. Foot Ankle Surg. 2025 Jul;31(5):378-383. doi: 10.1016/j.fas.2024.11.008. 
3. Chong KAJM, Teo SJ, Toh RX, Buhary KSM, Li Z, Tay KS. High Preoperative Pain Score is a Predictor of Cheilectomy Failure in Hallux Rigidus. J Foot Ankle Surg. 2025 Jan-Feb;64(1):1-6. doi: 10.1053/j.jfas.2024.08.008. 
4. So Tamil Selven D, SMB Kizher, Yew A, Kumarsing Ramruttun A, Tay KS, Yeo N. Biomechanical Consequences of Proximal Screw Placement in Minimally Invasive Surgery for Hallux Valgus Correction. J Foot Ankle Surg. 2024 Nov-Dec;63(6):672-679. doi: 10.1053/j.jfas.2024.06.007. 
5. Langit MB, Tay KS, Al-Omar HK, Barlow G, Bates J, Chuo CB, Muir R, Sharma H. Surgical debridement in long bone chronic osteomyelitis: is wide tumour-like resection necessary? Bone Jt Open. 2023 Aug 24;4(8):643-651. Doi: 10.1302/2633-1462.48.BJO-2023-0017.R1. 
6. Tay HW, Tay KS. Future directions for early detection of fracture related infections. J Orthop. 2024 Apr 10;55:64-68. doi: 10.1016/j.jor.2024.03.034. 
7. AYW Tay, GS Goh, Z Li, NEM Yeo, KS Tay. Two-Year Clinical and Radiological Outcomes Following Surgical Treatment of Insertional Achilles Tendinopathy Using a Central Tendon-Splitting Approach. Foot & Ankle International, 10711007231173679, 2023.
8. SLH Lim, GY Peng, MWP Tan, AA Sayampanathan, HCA Tan, KS Tay. Utility and satisfaction of telemedicine for ambulatory orthopaedic care in an urban setting. Singapore Medical Journal, 2023. 
9. KS Tay, M Langit, C Fenton, R Grupping, R Muir, E Moulder, H Sharma. Complex ankle fusion with circular frames: factors influencing outcomes, complications, and patient satisfaction. Foot & Ankle International 44(5), 403-414, 2023.
10. KS Tay, D Sangoi, K Malhotra, MJ Welck, N Cullen, S Patel. Plain Radiographs are Insufficient for Evaluation of First Metatarsal Pronation in Patients Undergoing Surgery for Hallux Valgus. Foot & Ankle Orthopaedics. 2022 Nov;7(4):2473011421S00968.
11. Duff A, Tay KS, Najefi AA, Cullen N, Patel S, Welck M, Malhotra K. Side-to-Side Difference of Metatarsal Rotation in Normal Individuals. Foot & Ankle International. 2022 Mar 31:10711007221079610.
12. Koh DT, Tan MW, Zhan X, Li Z, Tay KS, Tan SM, Yeo NE, Rikhraj Singh I. Association of Elevated Body Mass Index and Outcomes of Arthroscopic Treatment for Osteochondral Lesions of the Talus. Foot & Ankle Orthopaedics. 2022 Jun;7(2):24730114221103263.
13. Tan MW, Tay KS, Yeo EM. Atelocollagen-Induced Chondrogenesis Versus Microfracture Alone for Osteochondral Lesions of the Talus: Surgical Technique and a 1-Year Clinical Outcome Study. Foot & Ankle Specialist. 2022 Jul 11:19386400221107003.
14. Lai YM, Tay KS, Lee SQ, Wong AW. Lower limb re-vascularization based on the angiosome concept with immediate-early local flap reconstruction: a case report. Journal of Surgical Case Reports. 2022 Aug;2022(8):rjac320.
15. Lee JY, Tay KS, Tan JH, Kadir HB, Koo K, Yeo N. Hallux valgus with second metatarsalgia: Is second metatarsal Weil osteotomy necessary?. Foot and ankle surgery: official journal of the European Society of Foot and Ankle Surgeons.:S1268-7731.
16. Tan WP, Sayampanathan AA, Tan TC, Tan CP, Lee CE, Tan HC, Tay KS. Rapid deployment of a telemedicine service in orthopaedic surgery during the COVID-19 pandemic. Singapore Med J. 2020 Nov 30;1:17.
17. KS Tay, CP Chew, DTT Lie. Routine periosteal flap augmentation does not improve outcomes of the modified Brostrom-Gould procedure for chronic lateral ankle instability.Foot & Ankle Orthopaedics. 30 Jul 2020. doi:10.1177/2473011420934735.
18. JY Lee, KS Tay, IR Singh. Distal Oblique Osteotomy versus Cheilectomy for Moderate-Advanced Hallux Rigidus: A 2-Year Propensity-Score-Matched Study.Foot and Ankle Surgery. 13 Jun 2020. https://doi.org/10.1016/j.fas.2020.06.001
19. GW Law, KS Tay, A Padki, KC Wong, K Zhang, NEM Yeo, K Koo, IR Singh. Results of hallux valgus surgery in diabetic patients with good glycemic control.Foot & Ankle International. 41(8), 945–953. doi:10.1177/1071100720930011
20. YWA Tay, KS Tay, Y Thever, H Ying, NEM Yeo. An Epidemiological Review of 623 Foot and Ankle Soft Tissue Tumours and Pseudo-Tumours.Foot and Ankle Surgery 27 May 2020. https://doi.org/10.1016/j.fas.2020.05.004
21. Law GW, Tay KS, Lim JWS, Zhang KT, Seng C, Yeo NEM, Koo K, Rikhraj IS. Effect of Severity of Deformity on Clinical Outcomes of Scarf Osteotomies. Foot & Ankle International. 3 Mar 2020. https://doi.org/10.1177/1071100720907387
22. Tay KS, YCS Ng, IR Singh, KW Chong. Open technique is more effective than percutaneous technique for TOPAZ radiofrequency coblation for plantar fasciitis.Foot and Ankle Surgery 18, no. 4: 287-292.
23. Moorthy V, Sayampanathan AA, Yeo EMN, Tay KS. Clinical Outcomes of Open versus Arthroscopic Broström Procedure for Lateral Ankle Instability: A Meta-Analysis.J Foot Ankle Surg. 7 Oct 2020. https://doi.org/10.1053/j.jfas.2020.10.001 
24. Moorthy V, Tay KS, Koo K. Arthroscopic Treatment of Primary Synovial Chondromatosis of the Ankle: A Case Report and Review of Literature.J Orthop Case Rep. 10 (6), 54. 
25. DTS Koh, CY Jerry, TS Ming, KS Tay, IR Singh, NEM Yeo. Mid-Term Functional and Radiological Outcomes of Total Ankle Replacement in an Asian Cohort.J Foot Ankle Surg. 2022 Mar-Apr;61(2):363-368. doi: 10.1053/j.jfas.2021.09.014. 
26. MGAN Silva, DTS Koh, KS Tay, K Koo, IR Singh. Lateral column osteotomy versus subtalar arthroereisis in the correction of Grade IIB adult acquired flatfoot deformity: A clinical and radiological follow-up at 24 months.Foot and Ankle Surgery.  30 July 2020. https://doi.org/10.1016/j.fas.2020.07.010
27. Tay KS, NN Lo, SJ Yeo, SL Chia, DKJ Tay, PL Chin. Revision Total Knee Arthroplasty: Causes and outcomes. Annals, Academy of Medicine, Singapore 42, no. 4 (2013): 178-183.
28. KS Tay, AHC Tan. Clinical Outcomes, Return to Sports, and Patient Satisfaction After Anterior Cruciate Ligament Reconstruction in Young and Middle-Aged Patients in an Asian Population—A 2-Year Follow-up StudyArthroscopy: The Journal of Arthroscopic & Related Surgery 2018;34(4), 1054-1059.29. 
29. Tay KS, A Bassi, W Yeo, WM Yue. Intraoperative Reduction Does Not Result in Better Outcomes in Low Grade Lumbar Spondylolisthesis with Neurogenic Symptoms after Minimally Invasive Transforaminal Lumbar Interbody Fusion – A 5 year Follow-up StudyThe Spine Journal 2016 Feb;16(2):182-90. Epub 2015 Oct 26.
30. Tay KS, Cher EWL, Zhang K, Tan SB, Howe TS, Koh JSB. Comorbidities Have a Greater Impact than Age Alone in the Outcomes of Octogenarian Total Knee ArthroplastyJournal of Arthroplasty 2017 May 31. pii: S0883-5403(17)30480-1. doi: 10.1016/j.arth.2017.05.041. 
31. Tay KS, A Bassi, W Yeo, WM Yue. Associated Lumbar Scoliosis Does Not Affect Outcomes in Patients Undergoing Focal Minimally Invasive Transforaminal Lumbar Interbody Fusion for Neurogenic Symptoms – A Minimum 2-year follow-up studyThe Spine Journal 2017 Jan;17(1):34-43. Epub 2016 Oct 8.32. 
32. Bin Abd Razak HR, Dhoke P, Tay KS, Yeo W, Yue WM. Single-Level Minimally Invasive Transforaminal Lumbar Interbody Fusion Provides Sustained Improvements in Clinical and Radiological Outcomes up to 5 Years Postoperatively in Patients with Neurogenic Symptoms Secondary to Spondylolisthesis.Asian Spine Journal 2017 Apr;11(2):204-212. Epub 2017 Apr 12.
33. Cher EWL, Tay KS, Zhang K, Tan SB, Howe TS, Koh JSB. The Effect of Comorbidities and Age on Functional Outcomes after Total Knee Arthroplasty in the Octogenarian: A Matched Cohort Study.Geriatric Orthopaedic Surgery & Rehabilitation 2018 May 16;9:2151459318769508. doi: 10.1177/2151459318769508
34. Zainul-Abidin S, Amanatullah DF, Anderson MB, Austin M, Barretto JM, Battenberg A, Bedard NA, Bell K, Blevins K, Callaghan JJ, Cao L, Certain L, Chang Y, Chen JP, Cizmic Z, Coward J, DeMik DE, Diaz-Borjon E, Enayatollahi MA, Feng JE, Fernando N, Gililland JM, Goodman S, Goodman S, Greenky M, Hwang K, Iorio R, Karas V, Khan R, Kheir M, Klement MR, Kunutsor SK, Limas R, Morales Maldonado RA, Manrique J, Matar WY, Mokete L, Nung N, Pelt CE, Pietrzak JRT, Premkumar A, Rondon A, Sanchez M, Novaes de Santana C, Sheth N, Singh J, Springer BD, Tay KS, Varin D, Wellman S, Wu L, Xu C, Yates AJ. General Assembly, Prevention, Host Related General: Proceedings of International Consensus on Orthopedic Infections.Journal of Arthroplasty. 2019 Feb;34(2S):S13-S35. doi: 10.1016/j.arth.2018.09.050. 
35. L Jiang, KS Tay, AHC Tan. The Rule of Twos: Technical Note on Consistent Anatomical Landmarks for Hamstring Graft HarvestingJournal of Orthopedics 2019 Nov 6. doi: 10.1016/j.jor.2019.10.017.  
36. Law GW, Padki A, Tay KS, Howe TS, Koh JSB, Mak MS, Mohan PC, Chan LP, Png MA. Computed tomography-based diagnosis of occult fragility hip fractures offer shorter waiting times with no inadvertent missed diagnosis. Journal of Orthopaedic Surgery. May 2020. doi:10.1177/2309499020932082
37. Wong KC, Han XA, Tay KS, Koh JSB, Howe TS. The psychological impact on an orthopaedic outpatient setting in the early phase of the COVID-19 pandemic: a cross-sectional study. J Orthop Surg Res 15, 322 (2020). https://doi.org/10.1186/s13018-020-01862-9