American Association of Hip & Knee Surgeons
The American Association of Hip & Knee (AAHKS) is a public charity based in Rosemont, Illinois. Its work includes education, advocacy, research, and outreach related to hip and knee patient care. Its 2024 filing describes activities including an accredited annual medical education meeting, health policy work, research, continuing education, and grants.
Key facts about American Association of Hip & Knee Surgeons
In short: American Association of Hip & Knee Surgeons gave $883K across 64 grants in 2024 (avg $14K), top state Texas. Source: 2024 IRS Form 990.
- EIN
- 36-3832205
- Latest 990 filing
- Form 990, 2024
- Annual giving (2024)
- $883,200
- Grants made (2024)
- 64
- Average grant
- $13,800
- Median grant
- $13,800
- Total assets
- $12,853,864
- Primary geography
- Texas (11% of itemized 2024 grant dollars)
- How to apply
- For FARE grants, submit a letter of intent through the application process; invited applicants receive instructions for submitting a full proposal. Full details ↓
Data from IRS Form 990, 2024; updated September 2026. Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Financial Overview
From 2024 IRS Form 990 · View filing
Total Assets
$12.9M
+12.3% YoY
Annual Giving
$883K
+783.2% YoY
Grant Count
64
+3100.0% YoY
Avg Grant Size
$14K
-72.4% YoY
How American Association of Hip & Knee Surgeons gives
- Giving grew 783% from 2021 to 2024. Method
From the foundation's IRS Form 990 filings. Methodology.
Mission & Focus Areas
In its 2024 filing, AAHKS states its mission is “to advance hip and knee patient care through education, advocacy, research and outreach.” Its website describes research, education, advocacy, collaboration, membership, and financial sustainability as strategic priorities.
AAHKS’s filing describes grants to adult reconstruction fellowship programs and research grant applications evaluated by its Research Committee for the related Foundation for Arthroplasty Research and Education (FARE). The filing says fellowship education improvement and innovation funding addresses areas such as patient optimization, diverse patient populations, registry-based research, and advanced technologies in joint arthroplasty.
Examples of 2024 recipients include hospitals, medical centers, and universities. Rush University Medical Center describes its own mission as improving health through patient care, education, research, and community partnerships. Northwestern University describes its mission as excellent teaching, innovative research, and student growth in a diverse academic community. These are the grantees’ stated missions, not AAHKS’s.
Grantmaking
In 2024, AAHKS reported 64 grants totaling $883,200. Each of the listed grants was $13,800; the smallest, largest, and median grant were all that amount. The filing identifies the listed grants as fellowship grants. Named recipients included Northwell Health Inc. in New York, Allegheny Health Network in Pennsylvania, Baylor College of Medicine in Texas, Cedars-Sinai Medical Center in California, and Duke University in North Carolina; each received $13,800.
AAHKS’s website describes a separate FARE research-grant process. Applicants submit a letter of intent, which the Research Committee reviews; selected applicants are invited to submit a full proposal. The website describes traditional FARE grants of up to $50,000 for studies conducted in North America. For the Disparities in Hip and Knee Arthroplasty Grant, applicants must be AAHKS Fellow members, may apply to only one FARE grant per cycle, and proposals must address one of the stated disparity-focused goals. The fall 2026 letter-of-intent deadline of July 27, 2026, has passed.
How to Apply
For FARE grants, submit a letter of intent through the application process; invited applicants receive instructions for submitting a full proposal. The 2024 filing says fellowship grant recipients must have a current program agreement with AAHKS and an SF Match account, and that receipt of funds requires completion of a fellowship program director and coordinator survey.
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Geographic Focus
Where this funder awards grants
AAHKS reported no international grants in 2024. The filing’s 2024 grant dollars were distributed among recipients in multiple U.S. states; the largest state shares listed were Texas (11%), Florida (9%), California (9%), New York (8%), and Pennsylvania (6%). FARE’s website says its research grants support studies conducted in North America.
Grant Distribution by State
Share of 2024 grant dollars across all 64 itemized grants.
States
Cities
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2024, annual grant giving ranged from $2K (2020) to $1.3M (2022). In 2024 it made 64 grants totaling $883K.
Hatched bars: grants paid as reported on the IRS filing, which lists no individual grants for that year.
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
The largest 2024 recipient was Northwell Health Inc ($28K across 2 grants). Together the top 10 received $179K.
Organizations only. It also paid 4 grants to individuals ($55,200), which are not listed by name.
Grant Size Distribution
126 grants across all recorded years
The most common grant size was under $50K: 120 grants of 126 (95%).
Giving History
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Northwell Health Inc New York, NY | Fellowship Grant | $13,800 |
| Allegheny Health Network Pittsburgh, PA | Fellowship Grant | $13,800 |
| Anderson Clinic Post Graduate Medical Education Foundation Alexandria, VA | Fellowship Grant | $13,800 |
| Baptist Health South Florida Foundation Inc Coral Gables, FL | Fellowship Grant | $13,800 |
| Baylor College of Medicine Houston, TX | Fellowship Grant | $13,800 |
| Beth Israel Deaconess Medical Center Inc Boston, MA | Fellowship Grant | $13,800 |
| Cedars-Sinai Medical Center Los Angeles, CA | Fellowship Grant | $13,800 |
| Cleveland Clinic Weston Hospital Nonprofit Corporation Weston, FL | Fellowship Grant | $13,800 |
| 2 grants to individuals Recipients not named | — | $27,600 |
| Trustees of Columbia University in City of New York New York, NY | Fellowship Grant | $13,800 |
Financial History
Multi-year comparison from IRS filings
| Filing year | Assets | Revenue | Expenses | Grants |
|---|---|---|---|---|
| 2024 | $12,853,864 | $10,174,605 | $9,946,406 | $883,200 (64 grants) |
| 2023 | $11,444,483 | $9,494,616 | $8,701,815 | $100,000 (2 grants) |
| 2022 | $11,054,452 | $9,412,032 | $8,633,315 | $1,267,515 (58 grants) |
| Metric | 2024 | 2023 | 2022 |
|---|---|---|---|
| Total Assets | $12,853,864 | $11,444,483 | $11,054,452 |
| Revenue | $10,174,605 | $9,494,616 | $9,412,032 |
| Expenses | $9,946,406 | $8,701,815 | $8,633,315 |
| Net Investment Income | $391,406 | $278,201 | $196,342 |
Data update history
When this profile's IRS filing data changed on Grantable
- Updated Form 990 for fiscal year 2020 (received by the IRS August 27, 2021)
- Updated Form 990 for fiscal year 2021 (received by the IRS November 10, 2022)
- Updated Form 990 for fiscal year 2022 (received by the IRS November 9, 2023)
- Updated Form 990 for fiscal year 2023 (received by the IRS August 27, 2024)
- Updated Form 990 for fiscal year 2024 (received by the IRS November 11, 2025)
- IRS filings on file for fiscal years 2020–2024
Leadership & Key People
Leadership team and compensation from IRS filings
AAHKS’s website lists Antonia F. Chen as president, Matthew P. Abdel as first vice president, Rafael J. Sierra as second vice president and secretary, R. Michael Meneghini as immediate past president, and Ran Schwarzkopf as treasurer. It lists Michael J. Zarski as executive director.
American Association of Hip & Knee Surgeons is led by Zarski Michael, Executive Director on every filing since 2020; 11 of 20 officers listed in 2024 are compensated.
Officers on the 2024 filing
Zarski Michael
Executive Director
On filings since 2020
50 hrs/week
$320K (2020) → $400K (2024)
Parvizi Javad
Past President & President
Second Vice President & First Vice President → President & First Vice President, 2023
President & First Vice President → Past President & President, 2024
On filings since 2020
2 hrs/week
No compensation reported
Huddleston James I.
President & First Vice President
Third Vice President & Second Vice President → First Vice President & Second Vice President, 2023
First Vice President & Second Vice President → President & First Vice President, 2024
On filings since 2021
2 hrs/week
No compensation reported
Lusk Eileen
Senior Director of Members
Senior Director of Members → Senior Director of Membership, 2023
Senior Director of Membership → Senior Director of Members, 2024
On filings since 2020
44 hrs/week
$116K (2020) → $137K (2024)
Mitchell Jeff
Director of Mktg & Corp Relat
Director of Mktg & Corp Relations → Director of Mktg & Corp Relat, 2022
On filings since 2020
45 hrs/week
$111K (2020) → $131K (2024)
Rodgers Chiara
Director of Research & Humani
Director of Research & Humanitarian Activities → Director of Research & Humani, 2021
On filings since 2020
40 hrs/week
$111K (2020) → $135K (2024)
Wolfe Sigita
Senior Director of Education
Senior Director of Education & Science → Senior Director of Education, 2022
On filings since 2020
50 hrs/week
$133K (2020) → $158K (2024)
Malvar-Ledda Renalin J.
Senior Director of Events & Opera
Senior Director of Events & Operations → Senior Director of Events & Opera, 2023
On filings since 2021
45 hrs/week
$109K (2021) → $126K (2024)
Browne James A.
Treasurer
Member-At-Large → Treasurer, 2023
On filings since 2020
2 hrs/week
$20K (2023) → $20K (2024)
Kerr Joshua
Deputy Executive Director
On filings since 2020
50 hrs/week
$154K (2020) → $191K (2024)
Bellamy Jaime L.
Member-At-Large
On filings since 2023
2 hrs/week
$25K (2023) → $20K (2024)
Levine Brett
Member-At-Large
New on the 2024 filing
2 hrs/week
$20K (2024)
Robinson Kenneth
Communications Manager
New on the 2024 filing
40 hrs/week
$106K (2024)
Chen Antonia F.
Second Vice President & Third Vice President
Member-At-Large → Third Vice President, 2023
Third Vice President → Second Vice President & Third Vice President, 2024
On filings since 2020
2 hrs/week
No compensation reported
Sierra Rafael J.
Secretary
On filings since 2021
2 hrs/week
No compensation reported
Delanois Ronald E.
Member-At-Large
On filings since 2022
2 hrs/week
No compensation reported
Meneghini R. Michael
First Vice President & Second Vice President
Third Vice President → Second Vice President & Third Vice President, 2023
Second Vice President & Third Vice President → First Vice President & Second Vice President, 2024
On filings since 2022
2 hrs/week
No compensation reported
Mihalko William M.
Member-At-Large
On filings since 2022
2 hrs/week
No compensation reported
Abdel Matthew P.
Third Vice President & Member-At-Large
Member-At-Large → Third Vice President & Member-At-Large, 2024
On filings since 2023
2 hrs/week
No compensation reported
Jain Rina
Member-At-Large
New on the 2024 filing
2 hrs/week
No compensation reported
Former officers (14)
- Former: Iorio Richard (2020–2023) — Past President
- Former: Nunley Ryan M. (2020–2023) — Treasurer
- Former: Springer Bryan D. (2020–2023) — President & Past President
- Former: Manning David W. (2021–2023) — Member-At-Large
- Former: Tucker Kim K. (2021–2023) — Member-At-Large
- Former: Barnes C. Lowry (2020–2022) — Past President
- Former: Bolognesi Michael P. (2020–2022) — Past President
- Former: Nam Denis (2020–2021) — Member-At-Large
- Former: Schwarzkopf Ran (2020–2021) — Member-At-Large
- Former: Della Valle Craig J. (2020) — Immediate Past President & Past President
- Former: Halsey David A. (2020) — 3rd Vice President
- Former: Molloy Robert M. (2020) — Member-At-Large
- Former: Polkowski Gregory G. (2020) — Secretary
- Former: Spangehl Mark J. (2020) — Member-At-Large
Data from IRS Form 990 filings, 2020–2024. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2024 IRS filing
The highest reported compensation on the 2024 filing was $400K, to Zarski Michael (Executive Director). 11 officers or directors reported compensation on that filing.
Contact
Mailing address: 9400 W Higgins Rd 230, Rosemont, IL 60018-4976
Phone: (847) 698-1200
Website: https://aahks.org
Frequently asked questions about American Association of Hip & Knee Surgeons
How much does American Association of Hip & Knee Surgeons give each year?
American Association of Hip & Knee Surgeons gave $883K across 64 grants in 2024, according to its 2024 IRS Form 990. In 2023 it gave $100K across 2 grants.
What is American Association of Hip & Knee Surgeons's typical grant size?
American Association of Hip & Knee Surgeons's median grant in 2024 was $13,800, and its average grant was $13,800, across 64 grants on its 2024 IRS Form 990.
Where does American Association of Hip & Knee Surgeons give grants?
American Association of Hip & Knee Surgeons's top state is Texas, with 11% of the grant dollars itemized on its 2024 IRS Form 990. The next largest states were Florida (9%) and California (9%). The most frequent recipient cities were New York, NY (4 grants), Houston, TX (4 grants), Boston, MA (3 grants) and Chicago, IL (3 grants).
Does American Association of Hip & Knee Surgeons give general operating support?
Not in 2024: none of the 64 grants with a stated purpose on American Association of Hip & Knee Surgeons's 2024 IRS Form 990 were described as general or operating support. Recurring purposes include "Fellowship Grant" (64 grants).
Who are American Association of Hip & Knee Surgeons's largest grantees?
American Association of Hip & Knee Surgeons's largest 2024 grantees include Northwell Health Inc ($27,600 across 2 grants), Rothman Institute Orthopaedic Foundation ($27,600 across 2 grants) and The Regents of the University of California ($27,600 across 2 grants), according to its 2024 IRS Form 990. It also paid 4 grants to individuals ($55,200), which are not listed by name. Together they received 9% of its itemized 2024 grant dollars.
How large is American Association of Hip & Knee Surgeons?
American Association of Hip & Knee Surgeons reported $12.9M in total assets on its 2024 IRS Form 990. Its revenue that year was $10.2M.
What does American Association of Hip & Knee Surgeons fund?
In its 2024 filing, AAHKS states its mission is “to advance hip and knee patient care through education, advocacy, research and outreach.” Its website describes research, education, advocacy, collaboration, membership, and financial sustainability as strategic priorities. See mission & focus areas ↑
How do I apply for a grant from American Association of Hip & Knee Surgeons?
For FARE grants, submit a letter of intent through the application process; invited applicants receive instructions for submitting a full proposal. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is American Association of Hip & Knee Surgeons's EIN?
American Association of Hip & Knee Surgeons's EIN (Employer Identification Number) is 36-3832205. IRS Form 990 filing data is available on this page for 2020–2024.
Data last updated September 2026. Sourced from IRS Form 990 filings. Research dossier generated September 2026.
Here's the math on researching American Association of Hip & Knee Surgeons by hand.
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