Mok Ying Ren

Adj Asst Prof Mok Ying Ren
EducationMBBS, NUS (2012); MMed Ortho; FRCSEd (Orth) (2022) MSpMed, University of Queensland (2016); Fellowship at Rizzoli Ortho Institute, Bologna, Italy (2025)
OccupationsOrthopaedic Sports Surgeon, Academic
Employer(s)National University Hospital, Singapore
Known forACL reconstruction (over-the-top technique), meniscus repair, cartilage surgery, knee preservation surgery; first Singaporean to win SEA Games gold medals in two different sports
Websitehttps://www.nuh.com.sg/care-at-nuh/find-a-doctor/doctor-details/Mok_Ying_Ren
Mok Ying Ren
Personal information
Born (1988-07-06) 6 July 1988
Singapore
Height1.72 m (5 ft 7+1⁄2 in)
Weight60 kg (130 lb)
Spouse
Belinda Ooi
​
(m. 2017)​
ChildrenEmma Mok, Caleb Mok, Micaiah Mok
Websitehttp://mokyingren.sg
Sport
CountrySingapore
ClubTeam Singapore
Coached bySelf Coached
Achievements and titles
Personal bests
  • 5000 m: 14:51
  • 10,000 m: 31:55
  • Half marathon: 1:07:08
  • Marathon: 2:26:07
Medal record
Representing  Singapore
Men's triathlon
Southeast Asian Games
Gold medal – first place2007 ThailandOlympic distance
Men's athletics
Southeast Asian Games
Gold medal – first place2013 MyanmarMarathon

Dr. Mok Ying Ren (born 6 July 1988) is a Singaporean orthopaedic surgeon, former competitive triathlete, and long-distance runner. He is a Consultant in Sports Surgery at the National University Hospital (NUH), Singapore, and an Adjunct Assistant Professor[1] at the NUS Yong Loo Lin School of Medicine, specialising in knee sports surgery including anterior cruciate ligament (ACL) reconstruction, meniscus repair, and knee preservation surgery. As an athlete, his best performances include a gold medal in the triathlon at the 2007 SEA Games, and another in the marathon at the 2013 SEA Games,[2] making him the first and thus far only Singaporean to win SEA Games gold medals in two different sports.[3] He held the national record in the 5000 m event from May 2011[4] to July 2021.

Career

Medical career

He is currently a Consultant in the Division of Sports Surgery at the National University Hospital (NUH), Singapore.[5]

Mok completed an international subspecialty fellowship at the Rizzoli Orthopaedic Institute in Bologna, Italy; which is one of the top Orthopedic Institutions in the world, ranking in the top 10 in the world every year since 2022.[6] He was trained under Professor Stefano Zaffagnini,[7][8] a leading authority in ACL reconstruction and knee ligament surgery. He was also mentored by Dr Alberto Grassi,[9] one of the highest volume paediatric ACL reconstruction surgeon in the world.[10] During this fellowship, he trained specifically in the over-the-top ACL reconstruction technique,[11] a physeal-sparing and anatomically distinct approach developed at the Rizzoli Institute and has been in use since 1993.[12]

Mok's research interests include the anatomy,[13] epidemiology,[14] reconstruction techniques,[15] management of complications,[16] outcomes,[17] lateral extra-articular tenodesis, graft selection, over-the-top reconstruction,[18][19] and magnetic resonance assessment of the ACL. He is an author of several textbook chapters on knee dislocation.[20]

Athletics

Mok is a 7-time Singapore Marathon Local Champion, capturing every title from 2009 to 2016 with the exception of a 3rd-place finish in 2012. Mok first won the 2009 Singapore Marathon with a time of 2:43:42 on his debut marathon.[21] At the 2010 Singapore Marathon, his second marathon, he broke his own course record for the local category with a time of 2:38:27.[22] Mok once again won the 2011 Singapore Marathon Local Category with a time of 2:46:01 despite battling a bad case of plantar fasciitis.[23] In 2016, he clocked 1hr 7min 8 sec at the Rock 'n' Roll Arizona Half Marathon to set a new National best time for the half marathon.[24]

Mok ran a new Singaporean men's 5000 m national record of 14:51:09 at the Tokai University Time Trials in Japan in May 2011.[25] The record was broken by Soh Rui Yong in July 2021.[26]

Early life and education

Mok Ying Ren was born on 6 July 1988 in Singapore.[25] His father was an engineer with Housing and Development Board, and his mother was a housewife.[27] Additionally, he has a younger sister, 6 years younger, Mok Ying Rong.[27] He studied at Red Swastika Primary School, Raffles Institution, and then Raffles Junior College.[25][27] He graduated from the National University Singapore Yong Loo Lin School of Medicine in 2012.[28] He also completed Masters in Sports Medicine with the University of Queensland in 2016.[29][30]

Personal life

Mok married Belinda Ooi on 30 December 2017, after having dated for four years.[31] They have a daughter and two sons.[32][33]

References

  1. ↑ "Adj Asst Prof Mok Ying Ren". NUHS. Retrieved 29 June 2026.
  2. ↑ "In search of true-blue Singaporean glory". Yahoo News. 23 December 2013. Retrieved 29 June 2026.
  3. ↑ Triathlon at the 2007 Southeast Asian Games
  4. ↑ "Mok Ying Ren Runs Singaporean Men's 5000 m NR at Tokai Univ. Time Trials". japanrunningnews.blogspot.com. Retrieved 29 June 2026.
  5. ↑ "Adj Asst Prof Mok Ying Ren". NUH. Retrieved 27 June 2026.
  6. ↑ "World's Best Specialized Hospitals 2025 - Orthopedics". Newsweek. 17 September 2024. Retrieved 27 June 2026.
  7. ↑ "Prof. Stefano Zaffagnini | Arthroscopic & Prosthetic Surgeon". upmc.it. Retrieved 27 June 2026.
  8. ↑ "Stefano Zaffagnini | Professor | Istituto Ortopedico Rizzoli, Bologna | IOR | Complex Structure: 2nd Orthopaedic and Traumatologic Clinic | Research profile". ResearchGate. Archived from the original on 8 February 2026. Retrieved 27 June 2026.
  9. ↑ "Dr. Grassi in breve ENG – Alberto Grassi" (in Italian). Retrieved 30 June 2026.
  10. ↑ Grassi, Alberto; Borque, Kyle A.; Laughlin, Mitzi S.; Tao, Matthew A.; Zaffagnini, Stefano (October 2025). "Age-specific over-the-top techniques for physeal sparing anterior cruciate ligament (ACL) reconstruction in skeletally immature patients: Current concepts for prepubescents to older adolescents". Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA. 33 (10): 3510–3522. doi:10.1002/ksa.12607. ISSN 1433-7347. PMC 12459316. PMID 39901868.
  11. ↑ Zaffagnini, Stefano; Lucidi, Gian Andrea; Macchiarola, Luca; Agostinone, Piero; Neri, Maria Pia; Marcacci, Maurilio; Grassi, Alberto (1 April 2023). "The 25-year experience of over-the-top ACL reconstruction plus extra-articular lateral tenodesis with hamstring tendon grafts: the story so far". Journal of Experimental Orthopaedics. 10 (1): 36. doi:10.1186/s40634-023-00599-8. ISSN 2197-1153. PMC 10067780. PMID 37005946.
  12. ↑ "Instagram". www.instagram.com. Retrieved 27 June 2026.
  13. ↑ Wang, Chen; Mok, Ying Ren; Wang, Ming; Ma, Xin; Hui, James Hoi Po; Lee, Dave Yee Han (December 2025). "Comparative Meta-Analysis of ACL Footprint Anatomy Between Asian and Western Populations". Orthopaedic Journal of Sports Medicine. 13 (12) 23259671251397407. doi:10.1177/23259671251397407. ISSN 2325-9671. PMC 12715120. PMID 41426266.
  14. ↑ Cruz, Jhulia Kawachi; Chew, Khim Yew; Ren, Mok Ying; Dave Lee, Yee Han (October 2025). "Complex knee injuries from bouldering: A case series". Journal of ISAKOS: Joint Disorders & Orthopaedic Sports Medicine. 14 100995. doi:10.1016/j.jisako.2025.100995. ISSN 2059-7762. PMID 40850398.
  15. ↑ Saseendar, Samundeeswari; Habsi, Salim Al; Mok, Ying Ren; Dave Lee, Yee Han (July 2025). "Single-Stage Medial Meniscus Ramp Repair, Lateral Meniscus Root Repair, Revision Anterior Cruciate Ligament Reconstruction and Lateral Extra-Articular Tenodesis". Arthroscopy Techniques. 14 (7) 103578. doi:10.1016/j.eats.2025.103578. ISSN 2212-6287. PMC 12350719. PMID 40822206.
  16. ↑ Banagala, Dileepa; Mok, Ying Ren; Cruz, Jhulia Kawachi; Han, Dave Lee Yee (2025). "Management of Rotational Instability After Anterior Cruciate Ligament Reconstruction". Video Journal of Sports Medicine. 5 (6) 26350254251374176. doi:10.1177/26350254251374176. ISSN 2635-0254. PMC 12701270. PMID 41393213.
  17. ↑ Liau, Zi Qiang Glen; Thirukumaran, Kamaraj; Yeo, Kennan Zhi Guang; Mok, Ying Ren; Lee, Yee Han Dave (June 2025). "Outcomes of ACL Reconstruction with Concomitant Meniscal Surgery: A Retrospective Cohort Study". Orthopaedic Journal of Sports Medicine. 13 (6) 23259671251327600. doi:10.1177/23259671251327600. ISSN 2325-9671. PMC 12130643. PMID 40470515.
  18. ↑ Zaffagnini, Stefano; Mok, Ying Ren; Grassi, Alberto; Muccioli, Giulio Maria Marcheggiani (April 2026). "Over-the-top plus lateral extra-articular tenodesis anterior cruciate ligament reconstruction: Ten tips for success". Journal of Experimental Orthopaedics. 13 (2) e70785. doi:10.1002/jeo2.70785. ISSN 2197-1153. PMC 13238623. PMID 42255389.
  19. ↑ Mok, Ying Ren; Grassi, Alberto; Marcheggiani Muccioli, Giulio Maria; Pierangeli, Andrea; Martín Domínguez, Lidia Ana; Rossi, Claudio; Zaffagnini, Stefano (April 2026). "Graft orientation using the over-the-top technique in anterior cruciate ligament reconstruction: Magnetic resonance imaging-based study". Journal of Experimental Orthopaedics. 13 (2) e70744. doi:10.1002/jeo2.70744. ISSN 2197-1153. PMC 13147152. PMID 42100103.
  20. ↑ Mok, Ying Ren; Nyland, John; Lee, Yee Han Dave; Pardiwala, Dinshaw N. (2024), "Knee Dislocations and Multiligament Injuries", Sports Injuries, Springer, Berlin, Heidelberg, pp. 1–17, doi:10.1007/978-3-642-36801-1_443-1, ISBN 978-3-642-36801-1, retrieved 27 June 2026
  21. ↑ Tan, Les (4 December 2011). Mok Ying Ren returns from injury to finish as fastest S'porean marathoner for 3rd straight year. Red Sports. Retrieved on 2014-10-03.
  22. ↑ Tung, Colin (5 June 2011). Mok Ying Ren wins Christchurch Marathon in personal best of 2 hours 26 minutes 34 seconds. Red Sports. Retrieved on 2014-10-03.
  23. ↑ Mok, Ying Ren (6 December 2012). Mok Ying Ren: "I did not want to quit because quitting once gives you permission to quit again". Red Sports. Retrieved on 2014-10-03.
  24. ↑ "Athletics: Mok Ying Ren sets new national best in half-marathon at Arizona race". The Straits Times. 18 January 2016. ISSN 0585-3923. Retrieved 30 June 2026.
  25. 1 2 3 "Mok Ying Ren, "I will be training hard for a medal at the SEA Games" | Singapore Athletics". Retrieved 26 September 2021.
  26. ↑ Chia, Laura (17 July 2021). "Athletics: Soh Rui Yong sets new men's 5,000m national record". The Straits Times. ISSN 0585-3923. Retrieved 26 September 2021.
  27. 1 2 3 Lee, Venessa (28 September 2014). "Sibling Power" (PDF). The Straits Times. Retrieved 26 September 2021.
  28. ↑ Tan, Theresa (October 2013). "In For The Long Haul". NUS AlumNUS Magazine. No. 95. p. 25.
  29. ↑ "Study Queensland!". #runwithmok. 2 June 2018. Archived from the original on 24 May 2019.
  30. ↑ jedsent (4 June 2018). "Mok goes Queensland!". Retrieved 26 September 2021.
  31. ↑ "Athletics: Mok Ying Ren begins 'lifetime marathon' after getting married". The Straits Times. 30 December 2017. ISSN 0585-3923. Retrieved 26 September 2021.
  32. ↑ "Mok Ying Ren - Daughter's birth". www.facebook.com. Retrieved 26 September 2021.
  33. ↑ "Mok Ying Ren - Son's birth". Facebook. Retrieved 26 September 2021.
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