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Spenser Cassinelli, MD

  • Specialities

    Foot & Ankle Reconstruction, Total Ankle Replacement, Trauma; Deformity Correction, Bunion Surgery, Achilles Tendon Ruptures Arthritis & Sports-Related Injuries

  • Fellowship

    Foot & Ankle Orthopaedic Surgery - Cedars-Sinai Medical Center

  • Residency

    Harbor-UCLA Medical Center, Torrance, California

  • Medical School

    University of Nevada School of Medicine, Reno Nevada

  • Board Certified by the American Board of Orthopaedic Surgery


Dr. Cassinelli attended the University of Nevada, Reno for both his undergraduate studies and medical school. He completed his residency at the Harbor – UCLA Medical Center in Torrance, CA, and his Foot & Ankle Orthopedic Fellowship at Cedars-Sinai Medical Center in Beverly Hills, CA. He specializes in foot and ankle reconstruction, total ankle replacement, trauma, deformity correction, bunion surgery, Achilles tendon ruptures, arthritis, and sports-related injuries. He joined the Reno Orthopedic Center in 2019 and enjoys outdoor activities such as running, golfing, and snowboarding.


  • Publications

    Chapman’s Comprehensive Orthopaedic Surgery, 4th edition. Chapter 189 Hallux Rigidus: Introduction and Non-Operative Care. Authors: Harris TG, Cassinelli SJ

  • Cassinelli SJ, Moss LK, Lee DC, Phillips J, Harris, TG. Delayed Open Reduction Internal Fixation of Missed, Low-Energy Lisfranc Injuries. Foot Ankle Int. 2016 Oct;37(10): 1084-1090. PMID 27344055

  • Cassinelli SJ, Herman R, Harris TG. Distal Metatarsal Osteotomy for Moderate to Severe Hallux Valgus. Foot Ankle Int. 2016 Oct;37(10): 1137-1145. PMID 27694269

  • Ho NC, Sangiorgio SN, Cassinelli S, Shymon S, Fleming J, Agrawal V, Ebramzadeh E, Harris TG. Biomechanical Comparison of Fixation Stability Using a Lisfranc Plate Versus Transarticular Screws. Foot and Ankle Surg. 2019 Feb;25(1):71-78. PMID 29409256

  • Cassinelli SJ, Harris TG, Giza E, Kreulen C, Matheny LM, Robbins CM, Clanton TO. Use of Anatomic Landmarks in Ankle Arthroscopy to Determine Accuracy of Syndesmotic Reduction: A Cadaveric Study. Foot Ankle Spec. 2019 May 21: 1938640019846972. PMID: 31113242

  • Cassinelli SJ, Chen S, Charlton TP, Thordarson DB. Early Outcomes and Complications of Synthetic Cartilage Implant for Treatment of Hallux Rigidus in the United States. Foot Ankle Int. 2019 Oct;40(10):1140-1148. PMID 31195830

  • An TW, Cassinelli SJ, Charlton TP, Pfeffer GB, Thordarson DB. Radiographic and Magnetic Resonance Imaging of the Symptomatic Synthetic Cartilage Implant. Foot Ankle Int. 2020 Jan;41(1):25-30. PMID 31538827

  • Presentations

    Surgical trainees in “warm up” simulations of laparoscopic ventral hernia repair.

  • Poster Presentation at Association for Surgical Education, Orlando, FL April 2013. Presenter: Richardson C (involved in completion of project, not currently in publication)

  • Delayed Open Reduction Internal Fixation of Missed, Low-Energy Lisfranc Injuries.

  • Podium Presentation at 39th Annual Dana M. Street Research Symposium. Torrance, CA June 2016. Presenter: Cassinelli SJ

  • Delayed Open Reduction Internal Fixation of Missed, Low-Energy Lisfranc Injuries.

  • Poster presentation at Western Orthopaedic Association 80th Annual Meeting. Palm Springs, CA September 2016. Presenter: Cassinelli SJ

  • Comparing the Fixation Stability of the Dorsal Lisfranc Plate to Transarticular Screws: A Biomechanical Study in Cadaveric Feet.

  • Poster Presentation at 2017 AOFAS Annual meeting. Seattle, WA July 2017. Presenter: Shymon, SJ

  • Early Outcomes and Complications of Synthetic Cartilage Implant for Treatment of Hallux Rigidus in the United States Podium Presentation at 2019 Cedars-Sinai Research Day. June 2019 Presenter: Cassinelli SJ

  • Post-Operative Foot and Ankle Pain Management in 2019.

  • Cedars-Sinai Department of Orthopaedics Grand Rounds. Los Angeles, CA. July 2019. Presenter: Spenser Cassinelli

  • Early Outcomes and Complications of Synthetic Cartilage Implant for Treatment of Hallux Rigidus in the United States Poster Presentation at 2019 AOFAS Annual meeting. Chicago, IL September 2019. Presenter: Cassinelli SJ

"I had a climbing accident and had to have surgery. I am extremely active and my work depends on me being able to perform at a very high physical level. I was incredibly nervous about doctors, surgery, and getting back to where I was. I also have a background in the medical field. Dr. Cassinelli has been the best doctor I could have ever hoped for. He has incredible skill and everything he said lined up perfectly with advice from multiple friends in the medical field including several doctors and a physical therapist. His skill is matched equally by his bedside manner, ability to explain conditions and intricacies at the level you understand, and patience at answering questions. He took the time to understand my unique situation and came up with a game plan to get me back to the high level of ankle functionality that I need to get back to work/recreation. Recommend Dr. Cassinelli for anyone seeking medical care for their ankle."

"I am a recent surgery patient of Dr. Cassinelli and I would recommend him to anyone who needs Orthopedic Surgery. He is well trained, positive, and professional and makes you feel as though you have been listened to and taken care of from the decision to have surgery thru to the final day of surgery and beyond. He helps you feel confident that it's all going to be okay. For those reasons and others he really deserves the 5 star's!!"

"I believe that was the best doctor visit I have ever had. Nothing was rushed as Doctor Cassinelli took the time to listen to me and provided me ample time to review my X-rays and go over my options . His exam was thorough. The new ROC facility is amazing. From check in , to imaging, to my doctors appointment the staff was pleasant, and I experienced no long wait times like I have in other facilities."

Nurse Practitioner