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· Public charity

American Association of Hip & Knee Surgeons

To advance hip and knee patient care through education, advocacy, research and outreach.

$933k
Granted FY2024still arriving
64
Grants FY2024still arriving
25
States reached
$14k
Largest
01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2019 to 2024.

Health$1.9MEducation$555kScience & Tech$81kRecreation & Sports$34kArts & Culture$14kHuman Services$14kReligion$14k
02FY2024 · 64 grants

Where the money goes

Grants by size, and the largest recipients.

How this is measured
The 64 grants below total $883,200, the rows itemized in this filing. The $933,017 headline is the total grant expense on the return; the other $49,817 is giving the schedule does not break out (grants under the $5,000 itemization floor, grants to individuals, grants on other schedules). Every figure below describes the itemized rows only.
$13,800
Median grant
25
States reached
$13M
Total assets
Largest grants
RecipientAmount
UNIVERSITY OF LOUISVILLE RESEARCH FOUNDATION$13,800
VANDERBUILT UNIVERSITY MEDICAL CENTER$13,800
UNIVERSITY OF PENNSYLVANIA ADULT RECONSTRUCTIVE SURGERY FELLOWSHIP$13,800
NEW YORK UNIVERSITY$13,800
ANDERSON CLINIC POST GRADUATE MEDICAL EDUCATION FOUNDATION$13,800
CARILION MEDICAL CENTER$13,800
THE UNIVERSITY OF TEXAS AT AUSTIN$13,800
UNIVERSITY OF CALIFORNIA LOS ANGELES$13,800
UNIVERSITY OF UTAH$13,800
MAYO CLINIC$13,800
CLEVELAND CLINIC WESTON HOSPITAL NONPROFIT CORPORATION$13,800
NORTHWELL HEALTH INC$13,800
COLORADO ORTHOPAEDIC RESEARCH INSTITUTE$13,800
WEST VIRGINIA UNIVERSITY CORPORATION$13,800
UNIVERSITY OF ARKANSAS FOR MEDICAL SCIENCES$13,800
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

Dollar for dollar, its grants (FY19–24) land where the poverty rate runs at 14%, against an area that typically sits at 11%. 81% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 11%BRIGHAM AND WOMANS HOSPITAL INC: $20k → 16%REGENTS OF THE UNIVERSITY OF MINNESOTA: $40k → 11%TRUSTEES OF UNIVERSITY OF PENNSYLVANIA: $20k → 22%BOARD OF TRUSTEES OF THE LELAND STNFORD JUNIOR UNIVERSITY: $20k → 7%OTHOPAEDIC EDUCATION AND RESEARCH INSTITUTE OF SOURTHERN CALIFORNIA: $20k → 10%THE REGENTS OF THE UNIVERSITY OF CALIFORNIA: $20k → 10%THE REGENTS UNIVERSITY OF CALIFORNIA: $20k → 14%NEW YORK SOCIETY FOR THE RELIEF OF RUPTURED AND CRIPPLED: $20k → 17%MONTEFIORE MEDICAL CENTER: $20k → 28%THE ORTHO SAN ANTONIO FOUNDATION: $20k → 16%TMH PHUSICIAN ORGANIZATION: $20k → 16%PRISMA HEALTH: $20k → 10%BAPTIST HEALTH SOUTH FLORIDA FOUNDATION INC: $20k → 15%ORTHOPAEDIC ASSOCIATES OF GRANT RAPIDS RESEARCH AND EDUCATION INSTITUTE: $20k → 11%OREGON HEALTH AND SCIENCE UNIVERSITY: $20k → 12%VANDERBUILT UNIVERSITY MEDICAL CENTER: $20k → 14%ORTHOCAROLINA: $20k → 10%DUKE UNIVERSITY: $20k → 11%WAKE FOREST UNIVERSITY HEALTH SCIENCES: $20k → 15%UNIVERSITY OF UTAH: $20k → 8%REGENTS OF THE UNIVERSITY OF COLORADO GRANTS AND CONTRACTS: $20k → 10%TRUSTEES OF INDIANA UNIVERSITY: $20k → 18%CLEVLAND CLINIC FLORIDA REGIONAL HEALTH SYSTEM: $20k → 17%WEST VIRGINIA UNIVERSITY CORPORATION: $20k → 19%MISSISSIPPI SPORTS MEDICINE FOUNDATION: $20k → 23%ANDERSON CLINIC POST GRADUATE MEDICAL EDUCATION FOUNDATION: $20k → 6%UNIVERSITY OF VIRGINIA: $20k → 8%CARILION MEDICAL CENTER: $20k → 20%DESERT ORTHOPAEDIC RESEARCH FOUNDATION: $20k → 13%SINAI HOSPITAL OF BALTIMORE: $20k → 19%ORTHO CINCY ORTHOPAEDICS AND SPORTS MEDICINE: $20k → 11%UNIVERSITY OF LOUISVILLE RESEARCH FOUNDATION: $20k → 15%BOSTON MEDICAL CENTER CORPORATION: $20k → 16%ALLEGHENY HEALTH NETWORK: $20k → 11%NORTHWELL HEALTH INC: $40k → 6%TRUSTEES OF COLUMBIA UNIVERSITY IN CITY OF NEW YORK: $20k → 17%UNIVERSITY OF TEXAS HELATH SCIENCE CENTER: $20k → 16%FOUNDATION FOR ORTHOPAEDIC RESEARCH AND EDUCATION: $20k → 13%HOLY CROSS HOSPITAL INC: $20k → 13%FOUNDATION FOR ARTHOPLASTY RESEARCH AND EDUCATION: $200k → 14%MASSACHUSETTS GENERAL HOSPITAL: $20k → 16%ROTHMAN INSTITUTE ORTHOPAEDIC FOUNDATION: $40k → 22%THE KNEE SOCIETY: $50k → 14%THE HIP SOCIETY: $50k → 14%THE KNEE SOCIETY: $50k → 14%THE KNEE SOCIETY: $50k → 14%THE HIP SOCIETY: $50k → 14%THE HIP SOCIETY: $50k → 14%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.

Which US states its grants reach

WA
MN
IL
WI
MI
NY
MA
OR
NV
IN
OH
PA
NJ
CT
RI
CA
UT
CO
MO
KY
WV
VA
MD
AR
TN
NC
SC
MS
GA
TX
FL
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

71%of every dollar goes to organizations it has funded before.
$1.7M · 42 repeat orgs$702k to everyone else

42 repeat relationships: 39 still active in FY2024, 3 since wound down; 19 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

42
12

Total granted

$1.7M
$440k

Median revenue growth · since first grant

+17%
+29%

Still filing today

60%
58%

New vs renewed · share of each year

In FY2024, 68% of grant dollars renewed an existing relationship; $262k went to new ones.

50%100%’19’21’22’23’24
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’19’21’22’23’24
HealthEducationCommunity ImprovementRecreation & SportsOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.

Backed again, and grew

  • TH
    THE HIP SOCIETY
    3× · 2021–2023 · $150k · revenue +165%
  • TK
    THE KNEE SOCIETY
    3× · 2021–2023 · $150k · revenue +48%
  • THE CLEVELAND CLINIC FOUNDATION
    2× · 2022–2024 · $34k · revenue +28%

Funded once

  • FF
    FOUNDATION FOR ARTHROPLASTY RESEARCH AND EDUCATION
    one grant, 2019 · $200k · revenue -62% · 73% of their budget
  • UO
    UNIVERSITY OF MINNESOTA
    one grant, 2022 · $40k
  • MM
    MONTEFIORE MEDICAL CENTERgraduated
    one grant, 2022 · $20k · revenue +29%
How this is measured

Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.

04Its field

Closest unfunded matches

The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.

1
University of Minnesota Physicians

University of minnesota physicians serves as the integrated group practice for the university of minnesota medical school full-time faculty to provide the highest quality healthcare to patients and their families.university of minnesota…

Health
2
Mass General Brigham Incorporated & Affiliates Group Return

Mass general brigham incorporated is developing an integrated health care delivery system throughout the region that offers patients a continuum of coordinated, high-quality care.

Health
3
The Johns Hopkins Hospital

For more than 125 years, the mission of the johns hopkins hospital has been to lead the world in the diagnosis and treatment of disease and to train tomorrow's great physicians, nurses and scientists. above all, we aim to provide the…

Health
4
Thomas Jefferson University

Thomas jefferson university ("tju") is a comprehensive university with preeminence in transdisciplinary, experiential professional education, research and discovery, delivering exceptional value for the 21st century students with…

Education
5
Massachusetts Eye & Ear Infirmary

THE MASSACHUSETTS EYE AND EAR INFIRMARY ("THE INFIRMARY") IS A NOT-FOR-PROFIT TEACHING HOSPITAL CONDUCTING PATIENT CARE AND RESEARCH. THE INFIRMARY IS A TEACHING HOSPITAL OF HARVARD MEDICAL SCHOOL AND AN INTERNATIONAL CENTER FOR RESEARCH.…

Health
6
Truman Medical Center Incorporated

University health is an academic health center providing accessible, state-of-the-art quality healthcare to our community regardless of the ability to pay.

Health
7
Fred Hutchinson Cancer Center

Fred hutch cancer center ("fred hutch") unites innovative research and compassionate care to prevent and eliminate cancer and infectious disease. continued on schedule o

Health
8
Emory University

Emory University's mission is to create, preserve, teach, and apply knowledge in the service of humanity. (See Schedule O for continuation)

Education
9
University of Chicago Medical Center

Our mission at the university of chicago medicine is to provide superior health care through rigorous research, innovative education, and comprehensive care and healing. in partnership with our colleagues, we pursue life-changing…

Health
10
Baylor Research Institute

To improve the care and well being of our community, nationally and internationally, through innovative clinically relevant research that is consistent with the mission, vision and values of Baylor Scott & White Health (BSWH).

Health
11
A T Still University of Health Sciences

A.T. Still University of Health Sciences serves as a learning-centered university dedicated to preparing highly competent professionals through innovative academic programs. The University is committed to continuing its osteopathic…

Education
12
Montefiore New Rochelle Hospital

Mission: to heal, to teach, to discover and to advance the health of the communities we serve. values: humanity, innovation, teamwork, diversity and equity - our values define our philosophy of care. they shape our actions and motivate and…

Health
How this is measured
The grantee most central to the portfolio’s shape is Montefiore Medical Center; the most unlike its peers is Orthopaedic Associates of Grand Rapids Research & Education Institute. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
04the grantee network

44 grantees tracked through their own filings, 2017–2025.

Each grant beside the grantee’s revenue from every source, year by year.

How this is measured

Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 44 of the 78 grantees resolved in that span have returns of their own we could reconcile.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

2
Load-bearing (≥25% of a budget)
1
Early backer (in before they grew)
44/44
Grantees still filing
33/44
Grew since first funded

Where the money sits, by cause and then by grantee

THE HIP SOCIETY: $150,000 · OtherTHE HIP SOCIETYTHE KNEE SOCIETY: $150,000 · OtherTHE KNEE SOCIETYROTHMAN INSTITUTE ORTHOPAEDIC FOUNDATION: $67,600 · OtherROTHMAN INSTITUTE ORTHOPAEDIC FOUNDATION+35 more: $878,420 · Other+35 moreFOUNDATION FOR ARTHROPLASTY RESEARCH AND EDUCATION: $200,000 · HealthFOUNDATION FOR ARTHROPLASTY RESEARCH…THE CLEVELAND CLINIC FOUNDATION: $33,800 · HealthTHE ORTHO SAN ANTONIO ABM FOUNDATION: $33,800 · HealthSINAI HOSPITAL OF BALTIMORE INC: $33,800 · HealthBaptist Health South Florida Foundation Inc: $33,800 · HealthNEW YORK SOCIETY FOR THE RELIEF OF THE RUPTURED AND CRIPPLED MAINTAINING THE: $33,800 · HealthMULTICARE HEALTH SYSTEM: $33,800 · HealthTEXAS ORTHOPEDIC RESEARCH AND EDUCATION FOUNDATION INC: $33,800 · HealthRush University Medical Center: $33,800 · HealthEndeavor Health Clinical Operations: $33,800 · HealthVanderbilt University Medical Center: $33,800 · HealthCarilion Medical Center: $33,800 · HealthHOLY CROSS HOSPITAL INC: $33,800 · HealthMAYO CLINIC: $33,800 · HealthFOUNDATION FOR ORTHOPAEDIC RESEARCH AND EDUCATION INC: $33,800 · Health+9 more: $161,400 · Health+9 moreWEST VIRGINIA UNIVERSITY RESEARCH CORPORATION: $33,800 · EducationWEST VIRGINIA UN…University of Miami: $33,800 · EducationUniversity of Mi…THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK: $33,800 · EducationTHE TRUSTEES OF …DUKE UNIVERSITY: $33,800 · EducationDUKE UNIVERSITYTHE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY: $33,800 · EducationTHE BOARD OF TRU…WAKE FOREST UNIVERSITY HEALTH SCIENCES: $33,800 · EducationWAKE FOREST UNIV…MISSISSIPPI SPORTS MEDICINE FOUNDATION: $33,800 · EducationMISSISSIPPI SPOR…TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA: $33,800 · EducationTRUSTEES OF THE …University of Louisville Research Foundation: $33,800 · EducationUniversity of Lo…Yale University: $20,000 · EducationBaylor College of Medicine: $13,800 · EducationUniversity of Chicago: $13,800 · EducationWASHINGTON UNIVERSITY: $13,800 · EducationNew York University: $13,800 · EducationNORTHWELL HEALTH INC: $67,600 · Community ImprovementNorthwestern University: $33,800 · Recreation & Sports
Other$1,246,020Health$834,600Education$379,400Community Improvement$67,600Recreation & Sports$33,800

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetFOUNDATION FOR ARTHROPLASTY RESEARCH AND EDUCATION: $200,000 over 1y, 73% of budgetTHE HIP SOCIETY: $150,000 over 3y, 7.1% of budgetTHE KNEE SOCIETY: $150,000 over 3y, 2.7% of budgetROTHMAN INSTITUTE ORTHOPAEDIC FOUNDATION: $67,600 over 2y, 7.6% of budgetTHE CLEVELAND CLINIC FOUNDATION: $33,800 over 2y, 0.0% of budgetTHE ORTHO SAN ANTONIO ABM FOUNDATION: $33,800 over 2y, 11% of budgetWEST VIRGINIA UNIVERSITY RESEARCH CORPORATION: $33,800 over 2y, 0.0% of budgetUniversity of Miami: $33,800 over 2y, 0.0% of budgetSINAI HOSPITAL OF BALTIMORE INC: $33,800 over 2y, 0.0% of budgetTHE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK: $33,800 over 2y, 0.0% of budgetAnderson Clinic Post-Graduate Medical Education Foundation: $33,800 over 2y, 1.4% of budgetBaptist Health South Florida Foundation Inc: $33,800 over 2y, 0.0% of budgetNEW YORK SOCIETY FOR THE RELIEF OF THE RUPTURED AND CRIPPLED MAINTAINING THE: $33,800 over 2y, 0.0% of budgetMULTICARE HEALTH SYSTEM: $33,800 over 2y, 0.0% of budgetTEXAS ORTHOPEDIC RESEARCH AND EDUCATION FOUNDATION INC: $33,800 over 2y, 24% of budgetDUKE UNIVERSITY: $33,800 over 2y, 0.0% of budgetTHE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY: $33,800 over 2y, 0.0% of budgetNorthwestern University: $33,800 over 2y, 0.0% of budgetRush University Medical Center: $33,800 over 2y, 0.0% of budgetEndeavor Health Clinical Operations: $33,800 over 2y, 0.0% of budgetVanderbilt University Medical Center: $33,800 over 2y, 0.0% of budgetWAKE FOREST UNIVERSITY HEALTH SCIENCES: $33,800 over 2y, 0.0% of budgetCarilion Medical Center: $33,800 over 2y, 0.0% of budgetHOLY CROSS HOSPITAL INC: $33,800 over 2y, 0.0% of budgetMAYO CLINIC: $33,800 over 2y, 0.0% of budgetTMH PHYSICIAN ORGANIZATION: $33,800 over 2y, 0.0% of budgetMISSISSIPPI SPORTS MEDICINE FOUNDATION: $33,800 over 2y, 6.7% of budgetTRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA: $33,800 over 2y, 0.0% of budgetUniversity of Louisville Research Foundation: $33,800 over 2y, 0.0% of budgetFOUNDATION FOR ORTHOPAEDIC RESEARCH AND EDUCATION INC: $33,800 over 2y, 0.6% of budgetMONTEFIORE MEDICAL CENTER: $20,000 over 1y, 0.0% of budgetORTHOPAEDIC EDUCATION AND RESEARCH INSTITUTE OF SOUTHERN CALIFORNIA: $20,000 over 1y, 1.1% of budgetYale University: $20,000 over 1y, 0.0% of budgetPrisma Health-Upstate: $20,000 over 1y, 0.0% of budgetDESERT ORTHOPAEDIC RESEARCH FOUNDAT FOUNDATION: $20,000 over 1y, 35% of budgetORTHOPAEDIC ASSOCIATES OF GRAND RAPIDS RESEARCH & EDUCATION INSTITUTE: $20,000 over 1y, 11% of budgetScott & White Healthcare Foundation: $20,000 over 1y, 0.1% of budgetBaylor College of Medicine: $13,800 over 1y, 0.0% of budgetUniversity of Chicago: $13,800 over 1y, 0.0% of budgetWASHINGTON UNIVERSITY: $13,800 over 1y, 0.0% of budgetBETH ISRAEL DEACONESS MEDICAL CENTER INC: $13,800 over 1y, 0.0% of budgetCOLORADO ORTHOPAEDIC RESEARCH INSTITUTE: $13,800 over 1y, 11% of budgetNew York University: $13,800 over 1y, 0.0% of budgetCEDARS-SINAI MEDICAL CENTER: $13,800 over 1y, 0.0% of budget
Grantee by grantee: a decade per organization, before and after funding

A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

Omega Medical Grants AssociationIL39× affinity16 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Omega Medical Grants Association · Muscular Dystrophy Association Inc · Arthroscopy Association of North America · American Cancer Society Inc · Cystic Fibrosis Foundation · American Heart Association Inc · American Orthopaedic Foot & Ankle Society Inc · The Children's Hospital of Philadelphia · Reach Out and Read Inc · The Children's Oncology Group Foundation Inc · Rheumatology Research Foundation · Mayo Clinic

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

How much its grantees rely on government

Each dot is one organization American Association of Hip & Knee Surgeons funds: left to right is the share of its income from government, bottom to top the share from American Association of Hip & Knee Surgeons. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 20%3%10%23%40%funder's share of their income ↑0%23%45%68%90%share of the org’s income from government →median 5%
  • Yale University: 12% of income from government
  • Beth Israel Deaconess Medical Center Inc: 6% of income from government
  • University of Miami: 5% of income from government
  • Sinai Hospital of Baltimore Inc: 0% of income from government
  • Holy Cross Hospital Inc: 0% of income from government
no gov moneyreceives it· size = income
2get no government money at all
3report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–90%
typical government reliance, FY20–25
How this is measured
Government income is each org’s traced federal awards (USASpending grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that a grant caused the public funding. Coverage is precision-first, a floor rather than a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12 to 24 months.
05Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to American Association of Hip & Knee Surgeons?

Find your warmest path to American Association of Hip & Knee Surgeons through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.

Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 78 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990 e-file return for fiscal year 2024, released 2024. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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