Honors & Awards

  • Resident Research Award, American College of Surgeons (ACS) (2018-2020)
  • Transplant and Tissue Engineering Research Grant, Stanford University (2018-2019)
  • Consult Resident Of The Year Award, Stanford Surgery (2018)
  • Best Clinical Oral Presentation at Stanford University Holman Research Conference, Stanford University (2017)
  • Stanford University Undergraduate Major Grant, Stanford University (2011)
  • Stanford University Mechanical Engineering Summer Research Internship Grant, Stanford University (2010)
  • Stanford University Undergraduate Minor Grant, Stanford University (2009)
  • NASA Research Grant Recipient, NASA (2008)

Professional Education

  • MD, Icahn School of Medicine At Mount Sinai (2016)
  • BA Honors, Stanford University, Philosophy and Honors in Ethics in Society (2012)

All Publications

  • Clinical Trigonometry: Right Hepatic Trisegmentectomy After Radiation Trisegmentectomy for Hepatocellular Carcinoma DIGESTIVE DISEASES AND SCIENCES Titan, A. L., Devereaux, K., Louie, J. D., Poultsides, G. A. 2018; 63 (6): 1419–23

    View details for DOI 10.1007/s10620-017-4797-2

    View details for Web of Science ID 000432319200009

    View details for PubMedID 29119415

  • Homeless Status, Postdischarge Health Care Utilization, and Readmission After Surgery. Medical care Titan, A., Graham, L., Rosen, A., Itani, K., Copeland, L. A., Mull, H. J., Burns, E., Richman, J., Kertesz, S., Wahl, T., Morris, M., Whittle, J., Telford, G., Wilson, M., Hawn, M. 2018; 56 (6): 460–69


    Homeless Veterans are vulnerable to poor care transitions, yet little research has examined their risk of readmission following inpatient surgery. This study investigates the predictors of surgical readmission among homeless relative to housed Veteran patients.Inpatient general, vascular, and orthopedic surgeries occurring in the Veterans Health Administration from 2008 to 2014 were identified. Administrative International Classification of Diseases, Ninth Revision, Clinical Modification codes and Veterans Health Administration clinic stops were used to identify homeless patients. Bivariate analyses examined characteristics and predictors of readmission among homeless patients. Multivariate logistic models were used to estimate the association between homeless experience and housed patients with readmission following surgery.Our study included 232,373 surgeries: 43% orthopedic, 39% general, and 18% vascular with 5068 performed on homeless patients. Homeless individuals were younger (56 vs. 64 y, P<0.01), more likely to have a psychiatric comorbidities (51.3% vs. 19.4%, P<0.01) and less likely to have other medical comorbidities such as hypertension (57.1% vs. 70.8%, P<0.01). Homeless individuals were more likely to be readmitted [odds ratio (OR), 1.43; confidence interval (CI), 1.30-1.56; P<0.001]. Discharge destination other than community (OR, 0.57; CI, 0.44-0.74; P<0.001), recent alcohol abuse (OR, 1.45; CI, 1.15-1.84; P<0.01), and elevated American Society Anesthesiologists classification (OR, 1.86; CI, 1.30-2.68; P<0.01) were significant risk factors associated with readmissions within the homeless cohort.Readmissions are higher in homeless individuals discharged to the community after surgery. Judicious use of postoperative nursing or residential rehabilitation programs may be effective in reducing readmission and improving care transitions among these vulnerable Veterans. Relative costs and benefits of alternatives to community discharge merit investigation.

    View details for DOI 10.1097/MLR.0000000000000915

    View details for PubMedID 29746348

  • Tendinopathy: Investigating the Intersection of Clinical and Animal Research to Identify Progress and Hurdles in the Field. JBJS reviews Titan, A., Andarawis-Puri, N. 2016; 4 (10)

    View details for DOI 10.2106/JBJS.RVW.15.00088

    View details for PubMedID 27792676

  • The Choice Between Total Hip Arthroplasty and Arthrodesis in Adolescent Patients: A Survey of Orthopedic Surgeons JOURNAL OF ARTHROPLASTY Kelman, M. G., Studdert, D. M., Callaghan, J. J., Farid, M. S., Titan, A. L., Dietz, F. R. 2016; 31 (1): 70-75


    For adolescent patients with end-stage hip disease, the choice between total hip arthroplasty (THA) and arthrodesis is complex; the clinical evidence is not definitive, and there are difficult trade-offs between clear short-term benefits from THA and uncertain long-term risks. We surveyed nearly 700 members of the Pediatric Orthopedic Society of North America and the American Association of Hip and Knee Surgeons. Respondents chose between a recommendation of THA or arthrodesis in four clinical vignettes. A clear majority of surgeons recommended THA in two of the vignettes, however opinion was somewhat divided in one vignette (overweight adolescent) and deeply divided in another (adolescent destined for manual labor job). Across all vignettes, recommendations varied systematically according to surgeons' age and their attitudes regarding tradeoffs between life stages.

    View details for DOI 10.1016/j.arth.2015.07.020

    View details for Web of Science ID 000366677000014

    View details for PubMedID 26298281

  • Variations in chondrogenesis of human bone marrow-derived mesenchymal stem cells in fibrin/alginate blended hydrogels ACTA BIOMATERIALIA Ma, K., Titan, A. L., Stafford, M., Zheng, C. H., Levenston, M. E. 2012; 8 (10): 3754-3764


    Fibrin and alginate hydrogels have been widely used to support chondrogenesis of bone marrow-derived mesenchymal stem cells (BM-MSCs) for articular cartilage and fibrocartilage tissue engineering, with each material offering distinct advantages and disadvantages. Attempting to produce a gel scaffold exhibiting beneficial characteristics of both materials, we fabricated fibrin/alginate blended hydrogels at various blend ratios and evaluated the gel morphology, mechanical properties and their support for BM-MSC chondrogenesis. Results show that when the fibrin/alginate ratio decreased, the fibrin architecture transitioned from uniform to interconnected fibrous and finally to disconnected islands against an alginate background, with opposing trends in the alginate architecture. Fibrin maintained gel extensibility and promoted cell proliferation, while alginate improved the gel biostability and better supported glycosaminoglycan and collagen II production and chondrogenic gene expression. Blended gels had physical and biological characteristics intermediate between fibrin and alginate. Of the blends examined, FA 40:8 (40 mg ml(-1) fibrinogen blended with 8 mg ml(-1) alginate) was found to be the most appropriate group for future studies on tension-driven BM-MSC fibrochondrogenesis. As BM-MSC differentiation appeared to vary between fibrin and alginate regions of blended scaffolds, this study also highlighted the potential to develop spatially heterogeneous tissues through manipulating the heterogeneity of scaffold composition.

    View details for DOI 10.1016/j.actbio.2012.06.028

    View details for Web of Science ID 000309301400022

    View details for PubMedID 22750738