Dr. Ast is fellowship trained in Adult Reconstruction and Joint Replacement Surgery from HSS. His primary specialty focus is rapid-recovery, short-stay and outpatient joint replacement surgery. Before returning to HSS, he previously developed and directed one of the largest and most successful outpatient joint replacement programs in the northeast. He also has both clinical and teaching expertise in the use of robotics and computer assistance in joint replacement surgery, and was the director of robotic and computer assisted surgery at a major university institution in New Jersey.
Dr. Ast also specializes in primary, complex and revision total joint replacement. His training includes minimally invasive hip and knee replacement, partial knee replacement, robotic surgery and computer assisted surgery. Dr. Ast has extensive experience with and has published research on patient-specific instruments and implants. During his studies, he published numerous articles and chapters in peer-reviewed journals and internationally distributed textbooks, including several chapters on "Approaches for Hip Replacement Surgery." He has also presented clinical and basic science research both nationally and internationally.
Dr. Ast grew up in Staten Island, New York, and attended Temple University, where he graduated Magna Cum Laude in Biology and Phi Beta Kappa. He completed his Medical Degree at Temple University School of Medicine and returned to New York for his residency training in orthopedic surgery at North Shore-Long Island Jewish Medical Center. Dr. Ast was a Division I gymnast at Temple University and captain of the conference champions and top ten nationally ranked team in 2003. He is married with two children, and enjoys his time playing tennis, golf, fishing, skiing and traveling.
Assistant Attending Orthopedic Surgeon, Hospital for Special Surgery
Assistant Professor of Orthopedic Surgery, Weill Cornell Medical College
Assistant Attending Orthopedic Surgeon, NewYork-Presbyterian Hospital
Rapid recovery, short stay and outpatient joint replacement
Partial Knee Replacement
Computer Assisted Partial and Total Knee Replacement
Robotic Assisted Partial Knee Replacement
Robotic Assisted Total Knee Replacement
Robotic Assisted Total Hip Replacement
Fellow of American Academy of Orthopaedic Surgery
Member of American Association of Hip and Knee Surgeons
Board Member of Eastern Orthopaedic Association
One of the goals of HSS is to advance the science of orthopedic surgery, rheumatology, and related disciplines for the benefit of patients. Physicians at HSS may collaborate with outside companies for education, research and medical advances. HSS supports this collaboration in order to foster medical breakthroughs; however HSS also believes that these collaborations must be disclosed.
As part of the disclosure process, this website lists physician collaborations with outside companies if payments were received during the prior year, or if the HSS physician currently receives payment. The disclosures are provided by information provided by the physician and other sources and are updated regularly. Further information may be available on individual company websites.
Below are the healthcare industry relationships reported by Dr. Ast as of September 24, 2018.
By disclosing the collaborations of HSS physicians with industry on this website, HSS and its physicians make this information available to their patients and the public, thus creating a transparent environment for those who are interested in this information. Further, the HSS Conflicts of Interest Policy does not permit physicians to collect royalties on products developed by him/her that are used on patients at HSS.
Patients should feel free to ask their HSS physicians questions about these relationships.
Temple University School of Medicine, 2007
North Shore - LIJ Health System, 2008
North Shore - LIJ Health System, 2012
Hospital for Special Surgery, 2013
Board Certified – American Board of Orthopedic Surgery
New York, New Jersey, Pennsylvania
Ast MP. High Yield Facts in the Hand. First Aid for the Surgery Clerkship- Third Edition. McGraw Hill, 2016.
Ast MP. High Yield Facts in Orthopaedics. First Aid for the Surgery Clerkship- Third Edition. McGraw Hill, 2016.
Ast MP, Bezwada HP. How to Identify and Correct Technical Errors. The Direct Anterior Approach to Hip Reconstruction.SLACK Inc, 2016.
Ast MP, Ranawat AS. Surgical Approaches for THR in Hip Replacement- Editor Lawrence D. Dorr. Future Medicine Ltd,2013.
Ast MP, Ranawat AS. Surgical Approaches for the Hip- Evidence vs. Advertising in World Clinics in Orthopaedics. JPMedical Publishers, 2013.
Goldstein MJ, Ast MP, Silber JS, Anderson DG, Albert TJ. Chapter 82- Cervical Kyphosis. The Cervical Spine: 5th Edition. Lippincott, Williams and Wilkins, 2010.
Ast MP. High Yield Facts in the Hand. First Aid for the Surgery Clerkship- Second Edition. McGraw Hill, 2009.
Ast MP, Lyman S, Gorab AH, Parkes NV, Westrich GH. Quality of life improvement and clinical outcomes after total hip arthroplasty are not dependent on femoral head composition. HSS J; 11(2): July 2015.
Ast MP, Abdel MP, Ruel AV, Lee Y, Lyman S, Westrich GH. Weight change after total hip or knee arthroplasty: prevalence, predictors, and effects on outcomes. J Bone Joint Surg Am; 97(11): June 2015.
Elpers M, Nam D, Boydstom S, Ast M, Wright T, Padgett D. Zirconia phase transformation, metal transfer, and surface roughness in retrieved ceramic composite femoral heads in total hip arthroplasty. J Arthroplasty; 29(11): August 2014.
Banka TR, Ast MP, Parks ML. Early intraprosthetic dislocation in a revision dual-mobility hip prosthesis. Orthopedics; 37(4): February 2014.
Ast MP, John TK, Labbisierre A, Robador N, Gonzalez Della Valle AM. Fracture of a single design of highly crosslinked acetabular liners: an analysis of voluntary reports to the United States Food and Drug Administration. J Arthroplasty: June 2014.
Abdel MP, Ast MP, Lee Y, Lyman S, Gonzalez Della Valle AM. All-cause in-hospital complications, acute renal failure and urinary tract infections increased in 4718 obese patients undergoing total knee arthroplasty. J Arthroplasty: February 2014.
Ast MP, Banka TR, Gorab AH, Lee L, Lyman S, Westrich GH. Clinical outcomes of patients with non-fatal VTE after total knee arthroplasty. J Arthroplasty, May 2013.
Ast MP, Mayman DJ, Su EP, Della Valle A, Parks MP, Haas SB. The reduction of implant related errors and waste in total knee arthroplasty using a novel, computer based, e.Label and compatibility program. J Arthroplasty, March 2013.
Thakur RR, Ast MP, McGraw M, Bostrom MP, Rodriguez JA, Parks ML. Severe persistent synovitis after cobalt chromium total knee arthroplasty requiring revision surgery. Orthopedics. 2013 Apr 1;36(4):e520-e524.
Ast MP, Nam D, Haas SB. Patient-specific instrumentation for total knee arthroplasty: A Review. Orthop Clin N Am. 43 (2012) e17-22.
For more publications, please see the PubMed listing.
Ast MP, Kiser C, Su E. Early Experience with Handheld Navigation for Direct Anterior THA. Australia Orthopaedic Association Annual Meeting; Adelaide, AUS, October 2017.
Ast MP, Mayman DJ, Della Valle AM, Bostrom MP, Haas SB. Near Miss Medical Errors in Total Joint Arthroplasty. HSS 2014 Holiday Knee Course: New York, NY, December 2014.
Ast MP, Abdel MP, Ruel AV, Lee Y, Lyman S, Westrich GH. Weight Change after Total Hip and Total Knee Replacement: Incidence, Predictors, and Affects on Clinical Outcomes. AAOS 2014: New Orleans, LA.
Ast MP, John TK, Gonzalez Della Valle AM. Fracture of Highly Crosslinked Acetabular Liners: An analysis of cases reported to the United States Food and Drug Administration. AAOS 2014: New Orleans, LA.
Ast MP, Mayman D, Su E, Gonzalez Della Valle A, Bostrom M, Parks M, Haas S. The reduction of implant related errors and waste in total knee arthroplasty using a novel, computer based, e.Label and compatibility system. Eastern Orthopaedic Association; Miami, FL, October 2013.
Banka TR, Ast MP, Fields K, Lyman S, Westrich GH. Pre-operative predictors of postoperative pain after total knee replacement. Eastern Orthopaedic Association; Miami, FL, October 2013.
Lyman S, Ast MP, Abdel MP, Gorab AH, Ruel A, Westrich GH. Weight loss following hip and knee arthroplasty. International Society of Orthopaedic Registries; Stratford-Upon-Avon, England, March 2013.
Ast MP, Mayman D, Su E, Gonzalez Della Valle A, Bostrom M, Parks M, Haas S. The reduction of implant related errors and waste in total knee arthroplasty using a novel, computer based, e. Label and compatibility system. HSS Holiday Total Knee Meeting; New York, December 2012.
Ast MP, Lementowski P. The use of matte finish stems to prevent stem displacement in cemented hemiarthroplasty. NS-LIJDept of Orthopaedic Surgery Alumni Research Day; New York, June 2012.
Ast MP, Roofeh J. Cost Effectiveness and Clinical Outcomes of Patient Specific Instrumentation for Total Knee Replacement. NS-LIJ Dept of Orthopaedic Surgery Alumni Research Day; New York, June 2011.
Current clinical research focuses on pain control after joint replacement surgery as well as the clinical safety and efficacy of hip and knee replacement implants.