Research
“Live as if you were to die tomorrow. Learn as if you were to live forever.”
– MAHATMA GANDHIAssociate Professor Sumit Raniga is an academic orthopaedic surgeon with a background in molecular medicine and biomechanics.
He is the author of numerous scientific publications in international peer reviewed journals and textbook chapters. He is the first and only fellow of the Royal Australasian College of Surgeons to be awarded the prestigious Charles S. Neer award for research in the field of shoulder surgery by the American Shoulder and Elbow Society in 2016. This is the highest honour in shoulder surgery research in the world.
Associate Professor Sumit Raniga has established and directs the Macquarie University Translational Orthopaedic Research Lab. This is an orthopaedic research program that focusses on basic scientific research that improves patient outcomes.
He leads a multidisciplinary team that enables an intensive collaboration between surgeons, radiologists, physiotherapists, biomechanical engineers, scientists and industry to improve patient outcomes through translational orthopaedic research. This world-class orthopaedic research program focuses on translational (basic scientific) research that improves prosthesis design, surgical techniques and rehabilitation to improve patient outcomes.
Translational Orthopaedic Research Lab
Professor Thomas Grupp (Principle Expert Engineer Research and Development; Scientific Director of Aesculap) praises the MQ Health Translational Orthopaedic Research Lab for its significant world class achievements in just 4 years.
Publications, Presentations and Patents
Scapular Morphology and Posterior Shoulder Stability: Biomechanical Evidence from an Advanced Cadaveric Shoulder Simulator. Bettina Hochreiter, MD, Justine Fleurette, MD, Mohammad Haddara, PhD, Bastian Sigrist, MSc, Richard Appleyard, PhD, Janos Tomka, MD, Desmond Bokor, MBChB, FRACS, Matthias Zumstein, MD, Sumit Raniga, BSc MSc (1st Hons) MBChB FRACS FAOrthA, Christian Gerber, MD, PhD, FRCS(Ed). Am J Sports Med. 2026 Mar;54(4):857-868. doi: 10.1177/03635465251411312. Epub 2026 Feb 6.
- Accepted for Podium at the 16th International Congress of Shoulder and Elbow Surgery (ICSES), Vancouver, Canada (2026)
- Accepted for Podium at the European Society for Surgery of the Shoulder and Elbow Congress, Barcelona, Spain (2026)
Cable Reinforcement Combined with Biologic Tuberoplasty Improves Restores Muscle Forces and Scapular Strain in an Irreparable Rotator Cuff Tear Model Restoration Compared to Tuberoplasty Alone: A Cadaveric Study. Mohammad Haddara, PhD, Natalie Guggenbach, MESc, Kevin Sun, Beng, Maria Antonia Rosanna Pena, MD, Justine Fleurette, MD, Janos Tomka, MD, Desmond Bokor, MBBS, MHEd, FRACS, FAOrthA, Manik Dham, MS, Christopher Adams, MD, Richard Appleyard, PhD, Sumit Raniga, BSc MSc (1st Hons) MBChB FRACS FAOrthA
- Manuscript Accepted for Publication in Arthroscopy
- Accepted for Podium at the 16th International Congress of Shoulder and Elbow Surgery (ICSES), Vancouver, Canada (2026)
- Accepted for Podium at the European Society for Surgery of the Shoulder and Elbow Congress, Barcelona, Spain (2026)
Kyphotic Scapular Posture Increases Posterior Deltoid Demand and Acromial-Spine Strain During Shoulder Motion: A Cadaver Study Mohammad Haddara, PhD, Kevin Sun, Beng, Julian Hasler, MD, Janos Tomka, MD, Desmond Bokor, MBChB, FRACS, Matthias A. Zumstein, MD, Richard Appleyard, PhD, Sumit Raniga, BSc MSc (1st Hons) MBChB FRACS FAOrthA 6 BSC, MSC (1 S T HONS) , MBCHB, FRACS , FAORTHA Associate Professor Sumit Raniga
- Manuscript Accepted for Publication in CORR
- Accepted for Podium at the 16th International Congress of Shoulder and Elbow Surgery (ICSES), Vancouver, Canada (2026)
- Accepted for Podium at the European Society for Surgery of the Shoulder and Elbow Congress, Barcelona, Spain (2026)
Scapula Posture-Driven Biomechanics: Comparing 10° with 30° Humeral Retrotorsion in Reverse Shoulder Arthroplasty. Mohammad Haddara, PhD, Kevin Sun, Beng, Julian Hasler, MD, Janos Tomka, MD, Desmond Bokor, MBChB, FRACS, Andrea Rosa, Matthias A. Zumstein, MD, Richard Appleyard, PhD, Sumit Raniga, BSc MSc (1st Hons) MBChB FRACS FAOrthA
- Manuscript Submitted for Publication in CORR
- Accepted for E-Poster at the 16th International Congress of Shoulder and Elbow Surgery (ICSES), Vancouver, Canada (2026)
- Accepted for Podium at the European Society for Surgery of the Shoulder and Elbow Congress, Barcelona, Spain (2026)
Native Joint vs. Reverse Shoulder Arthroplasty with an Intact Cuff: A Biomechanical Analysis. Mohammad Haddara, PhD, Kevin Sun, Beng, Julian Hasler, MD, Janos Tomka, MD, Desmond Bokor, MBChB, FRACS, Andrea Rosa, Matthias A. Zumstein, MD, Richard Appleyard, PhD, Sumit Raniga, BSc MSc (1st Hons) MBChB FRACS FAOrthA
- Accepted for E-Poster at the 16th International Congress of Shoulder and Elbow Surgery (ICSES), Vancouver, Canada (2026)
- Accepted for Podium at the European Society for Surgery of the Shoulder and Elbow Congress, Barcelona, Spain (2026)
The influence of the coracoacromial ligament on acromial strain and deltoid recruitment in reverse total shoulder arthroplasty. Julian Hasler, MD1, Mohammad Haddara, PhD, Kevin Sun, Beng, Janos Tomka, MD, Desmond Bokor, MBBS, MHEd, FRACS, FAOrthA, Richard Appleyard, PhD, Sumit Raniga, BSc MSc (1st Hons) MBChB FRACS FAOrthA.
- Accepted for Podium at the 16th International Congress of Shoulder and Elbow Surgery (ICSES), Vancouver, Canada (2026)
- Accepted for Podium at the European Society for Surgery of the Shoulder and Elbow Congress, Barcelona, Spain (2026)
The effect of component offset on acromion and scapular spine strains following reverse total shoulder arthroplasty: An ex-vivo shoulder motion study. Axford DT, Potra R, Appleyard R, Tomka J, Arenas-Miquelez A, Bokor DJ, Ferreira LM, Raniga S.J Biomech. 2026 Jan;195:113112. Doi: 10.1016/j.jbiomech.2025.113112. Epub 2025 Dec 6.PMID: 41364957
A biomechanical investigation of the surface strains on the acromion and scapular spine during simulated ex-vivo arm motion. Axford DT, Potra R, Appleyard R, Tomka J, Arenas-Miquelez A, Hollo D, Raniga S, Ferreira LM. J Biomech. 2025 Apr;183:112588. Doi: 10.1016/j.jbiomech.2025.112588. Epub 2025 Feb 17.PMID: 40010209
Three-dimensional continuous muscle moment arm maps for the anatomical shoulder. Axford DT, Potra R, Appleyard R, Tomka J, Arenas-Miquelez A, Hollo D, Raniga S, Ferreira LM. J Biomech. 2025 Mar;182:112561. Doi: 10.1016/j.jbiomech.2025.112561. Epub 2025 Feb 8.PMID: 39946823
Long-term Outcomes After Open Repair of Humeral Avulsion of the Glenohumeral Ligament. Dannaway J, Raniga S, Bokor D. Orthop J Sports Med. 7 BSC, MSC (1 S T HONS) , MBCHB, FRACS , FAORTHA Associate Professor Sumit Raniga 2024 Jun 1;12(6):23259671241247544. Doi: 10.1177/23259671241247544. eCollection 2024 Jun.PMID: 38831871
Textbook Chapter – Management of a Painful Shoulder Arthroplasty. Raniga S and Arenas-Miquelez A. Revision Shoulder Arthroplasty (2023); Chapter 4; ISBN: 9783031459436.
Improved surgical techniques and outcomes with anatomic total shoulder arthroplasty managing B2 glenoids in midterm-follow-up: A systematic review. David Hollo, Sumit Raniga, Dieter Cadosch, Andreas M. Müller and Desmond J. Bokor. Obere Extremität (2024) https://doi.org/10.1007/s11678-023-00780-6
Is preoperative elevated glycated hemoglobin (HbA1c) a risk factor for postoperative shoulder stiffness after posterior-superior rotator cuff repair? Dannaway J, Sharma G, Raniga S, Graham P, Bokor D. JSES Int. 2023 Oct 16;8(1):47-52. Doi: 10.1016/j.jseint.2023.09.006. eCollection 2024 Jan.
The Translational Shoulder – An Advanced In Vitro Cadaveric Shoulder Simulator. Axford, D.T., Potra, R., Appleyard, R., Tomka, J., Arenas-Miquelez, A., Bokor, D., Ferreira, L., and Raniga, S.
- Presented at the 1st World Rotator Cuff Study Group Meeting, Gubbio, Italy (2023)
- Presented at the New Zealand Shoulder and Elbow Society Meeting, Fiji (2023)
Does the Walch Type B Shoulder have a Transverse Force Couple Imbalance? – A Volumetric Analysis of Segmented Rotator Cuff Muscles in Osteoarthritic Shoulders. Antonio Arenas-Miquelez, MD, FEBOT; Victor Liu, MD; Joseph Cavanagh, MBBS; Petra L. Graham, PhD; Desmond John Bokor, Prof. MD, FRACS; Louis M. Ferreira, PhD; George S. Athwal, MD, FRCSC; Sumit Raniga, BSc, MSc (Hons), MBChB, FRACS
- Accepted for publication by Journal of Shoulder and Elbow Surgery (2021)
- Presented at the Shoulder and Elbow Society of Australia Biennial Conference, Sydney, Australia (2022)
- Awarded Best Paper at the Shoulder and Elbow Society of Australia Closed Conference, Sydney, Australia (2022)
The Translational Shoulder: The evolution of an advanced 6 degree of freedom, 8 muscle actuated in vitro cadaveric shoulder simulator. Axford D, Potra R, Ferriera L, Appleyard R, Bokor D, Raniga S.
- Presented at the Royal North Shore Shoulder Symposium, Sydney, NSW, Australia (2020)
Presented at the Shoulder and Elbow Society of Australia Biennial Conference, Sydney, Australia (2022)
A Novel Molecular Therapy for Adhesive Capsulitis. Raniga S.
- Patent in Progress
Map of the Inferior Glenohumeral Ligament for Suture Pull-Out Strength: A Biomechanical Analysis. Raniga S, Cadman J, Dabirrahmani D, Bui D, Appleyard R, Bokor D.Orthop J Sports Med. 2021 Jan 11;9(1):2325967120969640. doi: 10.1177/2325967120969640. eCollection 2021 Jan.
- Oral Poster Presentation at the International Congress of Shoulder and Elbow Surgery, Buenos Ares, Argentina (2019)
The Evolving B Type Glenoid. Raniga S, Knowles NK, Ferreira LF, Athwal GS.
- Podium Presentation at the Sydney Arthroplasty Masters Meeting, Sydney, NSW, Australia (2018)
Book Chapter – Distal Humerus Fractures. Athwal GSA & Raniga S. Rockwood and Green’s Fractures in Adults 9th Edition (2018); Chapter 39.
The Walch B2 Humerus: Glenoid Retroversion is Associated with Torsional Differences in the Humerus. Raniga S, Knowles NK, West E, Ferreira LF, Athwal GS. J Shoulder Elbow Surg. 2019 Sep;28(9):1801-1808. Doi 10.1016/j.jse.2019.02.010. Epub 2019 Apr 28.
- Podium Presentation at The 31stAnnual Congress of the International Society for Technology in Arthroplasty. London, UK (International) (2018)
- Podium Presentation at the Sydney Arthroplasty Masters Meeting, Sydney, NSW, Australia (2018)
- Podium Presentation at the Shoulder and Elbow Society of Australia Biennial Conference, Perth, Western Australia, Australia (2018)
- Poster Presentation at the AAOS Annual Meeting, Las Vegas, USA (2019)
- Podium Presentation at the International Congress of Shoulder and Elbow Surgery, Buenos Ares, Argentina (2019)
The Axillary Nerve in Humeral Avulsion of the Glenohumeral Ligament (HAGL): MRI and Clinical Study. Bokor D, Raniga S and Graham P. Orthop J Sports Med. 2018 Dec 5;6(12):2325967118811044. doi: 10.1177/2325967118811044. eCollection 2018 Dec.
- Podium Presentation at the Shoulder and Elbow Society of Australia Biennial Conference, Perth, Western Australia, Australia (2018)
- Oral Poster Presentation at the International Congress of Shoulder and Elbow Surgery, Buenos Ares, Argentina (2019)
BiPOD Arthroscopic Acromiclavicular Repair Restores Bi-Directional Stability. De Beer J, Schaer M, Latendresse K, Raniga S, Moor BK, Zumstein MA. 2017 Jan 1;40(1).
The Role of Capsular Repair in Latarjet Procedures. Zumstein MA, Raniga S. J Bone Joint Surg Am. 2016 Sep 7;98(17).
Glenohumerale Luxation – Verletzungsmuster und Kombinationsverletzungen. Flückiger, S. Raniga, B. K. Moor, M. A. Zumstein. Arthroskopie 2015/4: 292-300. DOI: 10.1007/s00142-015-0039-9.
Many Shoulder MRI Findings in Elite Professional Throwing Athletes Resolve After Retirement: A Clinical and Radiographic Study. Schär MO, Dellenbach S, Pfirrmann CW, Raniga S, Jost B, Zumstein MA. Clin Orthop Relat Res.2018 Mar;476(3):620-631.
New Quantitative Radiographic Parameters for Vertical and Horizontal Instability in Acromioclavicular Joint Dislocations. Zumstein MA, Schiessl P, Ambuehl B, Bolliger L, Weihs J, Maurer MH, Moor BK, Schaer M, Raniga S. Knee Surg Sports Traumatol Arthrosc. 2018 Jan;26(1):125-135.
Triceps Sparing Extra-Articular Step-Cut Olecranon Osteotomy (SCOOT) for Distal Humerus Fractures: An Anatomic Study. Zumstein MA, Raniga S, Flueckiger R, Campana L, Moor BK. J Shoulder Elbow Surg 2017 Sep;26(9):1620-1628.
Neer Award 2016: Reduced Muscle Degeneration and Decreased Fatty Infiltration after Rotator Cuff Tear in a Poly (ADP-ribose) Polymerase 1 (PARP-1) Knock- Out Mouse Model. Kuenzler MB, Nuss K, Karol A, Schär MO, Hottiger M, Raniga S, Kenkel D, von Rechenberg B, Zumstein MA. J Shoulder Elbow Surg. 2017 May;26(5):733-744.
- Awarded the Charles S. Neer Award for Best Basic Science Research 2016.
- Presented at American Shoulder and Elbow Society (2016)
- Presented at the European Shoulder and Elbow Society (2016)
The Biology of Rotator Cuff Healing. Zumstein MA, Lädermann A, Raniga S, Schär MO. Orthop Traumatol Surg Res. 2017 Feb;103(1S):S1-S10.
Optimal Lateral Row Anchor Positioning in Posterior-SuperiorTransosseous Equivalent Rotator Cuff Repair: A Micro CT Study. Zumstein MA, Raniga S, Labrinidis A, Eng K, Bain GI, Moor BK. Orthop J Sports Med.2016 Nov 22;4(11).
The Critical Shoulder Angle – Radiographic Signs of Degenerative Rotator Cuff Tears and it’s Biomechanical Rationale. Matthias A. Zumstein, Sumit Raniga, and Beat K. Moor. Instructional Course Lecture – European Shoulder and Elbow Society Meeting 2015.
Occult Infection in Aseptic Joint Loosening and the Diagnostic Role of Implant Sonication. Kempthorne J, Ailabouni R, Raniga S, Hammer D, Hooper G. Biomed Res Int. 2015;2015:946215. DOI: 10.1155/2015/946215. Epub 2015 Oct 25.
Kinematic analysis of scapulohumeral Motion and a Preliminary study of shoulder proprioception. Raniga S, Mohammed KD, Dalzell KGB. Presented at the New Zealand Shoulder and Elbow Society 2013.
The Time Out Procedure: have we changed our practice? Alex J-J Lee, Sumit Raniga, Gary Hooper, Ali Perry, Robyn Bisset, Diane Darley, Carmel Hurley-Watts. New Zealand Medical Journal. Vol 125 No 1362. Sep 2012.
Folic Acid Supplementation and Colorectal Cancer Risk;
A Meta-analysis. Fife J, Raniga S, Hider PN, Frizelle FA. Colorectal Dis. 2011 Feb;13(2):132-7.
Patterns of Eecurrence in Patients with Acute Diverticulitis. Eglinton T, Nguyen T, Raniga S, Dixon L, Dobbs B, Frizelle FA. Br J Surg. 2010 Jun;97(6):952-7.
Sacrococcygeal Pilonidal Disease. Lee PJ, Raniga S, Watson A, Frizelle FA. Colorectal Dis. 2008 Sep;10(7):639-50;discussion 651-2.
The Impact of Obesity on Outcome after Major Colorectal Surgery. Gendall KA, Raniga S, Kennedy R, Frizelle FA. Dis Colon Rectum. 2007 Dec;50(12):2223-37.
A Randomised Controlled Trial Comparing the Efficacy and Acceptability of Phospo-Soda Buffered Saline (Fleet®) with Sodium Picosulphate/Magnesium Citrate (Picoprep®) in the Preparation of Patients for Colonoscopy. Colorectal Dis. 2008 Jun;10(5):503-5.
Attitudes of Hospital Medical Practitioners to the Mandatory Reporting of Professional Misconduct. Raniga S, Hider P, Spriggs D, Ardagh M. N Z Med J. 2005 Dec 16;118(1227):U1781.
A Quite Revolution; Gene Therapy for Parkinson disease. Raniga S. Pharmaceutical and Diagnostic Innovation. 2004. 2 (1).
Methods of Providing Neuroprotection and/or Neurorestoration via the Neural Activin Type IIB Receptor. Hughes PE, Raniga S, Fernandez JAC. United States Patent Application Publication. Pub No.: US 2003/0103959 A1, Pub. Date: June 5, 2003.
Differential Regulation of Activin Type I and Type II Receptor mRNAs following Various Brain Injuries in the Rat. Raniga S. Thesis – Master of Science in Medical Science with 1st Class Honours. 2000.