膝关节置换术费用是多少？
Total knee replacement, also known as total knee arthroplasty, is a surgical procedure to resurface a knee damaged by arthritis or injury. Metal and plastic parts are used to cap the ends of the bones that form the knee joint.
无保险
$35,000
有保险
$10,500
Medicare
$8,000
全国平均
$25,000
By Elena Bellini, MPH, Health Policy & Management · Last reviewed 2026-04-16 ·
Sources: CMS Medicare Provider Utilization and Payment Data 2025 · Methodology · Editorial standards 概览
Total knee replacement (total knee arthroplasty, or TKA) is one of the most common orthopedic surgeries in the United States, with roughly 800,000 procedures performed per year. It replaces the diseased cartilage and bone of the knee joint — most commonly damaged by osteoarthritis — with metal and polyethylene components. The operation itself takes 1–2 hours under regional or general anesthesia. Most surgeons perform TKA on an outpatient basis at an ambulatory surgery center for appropriate candidates, with recovery at home and structured physical therapy over 6–12 weeks; higher-risk patients may stay 1–3 nights in the hospital. The total allowed amount spans the preoperative workup, the surgery itself, the implant hardware, the anesthesia, the facility, and the bundled postoperative visits — each of which may be billed by a different provider.
影响费用的因素
- Site of service: ambulatory surgery center (ASC) episodes are typically 30–50% cheaper than inpatient hospital surgery for eligible patients.
- Bundled vs unbundled billing: a bundled surgical package covers surgeon, anesthesia, and facility in one negotiated rate; unbundled episodes are billed piece by piece.
- Implant choice: standard cobalt-chrome and polyethylene components cost less than custom or robotic-assisted implants.
- Use of robotic assistance: robotic-arm-assisted TKA can add $1,500–$3,000 to the facility fee.
- Complexity and revision status: revision knee replacement is materially more expensive than a primary replacement.
- Post-acute care: discharge to a skilled nursing facility or inpatient rehab adds substantial cost versus home-based PT.
省钱攻略
- Ask the surgeon whether an ambulatory surgery center is clinically appropriate for your case — it is the single biggest cost lever.
- Request a bundled Good Faith Estimate that includes surgeon, anesthesia, facility, implant, and 90-day post-op care.
- Verify every participant — surgeon, anesthesiologist, facility, any assistant surgeon — is in-network.
- For insured patients, ask about surgery Centers of Excellence programs; many employer plans waive cost-sharing at designated centers.
- If uninsured, ask the facility about self-pay bundled surgery rates — these are often 40–60% below the chargemaster.
- Schedule the procedure after your deductible has been met for the year if the timing is clinically reasonable.
保险及承保说明
Knee replacement is covered by Medicare Part A (inpatient) or Part B (outpatient), commercial insurance, and most Medicaid programs when medical necessity criteria are met. Commercial plans virtually always require prior authorization, and many plans apply step-therapy requirements (documented trials of conservative management including physical therapy, weight management, and intra-articular injections). Medicare removed TKA from the inpatient-only list in 2018, which means Medicare will reimburse outpatient TKA at ambulatory surgery centers where appropriate. Patients should obtain a written Good Faith Estimate or Advanced Explanation of Benefits before scheduling, because the bundled rate often exceeds the annual out-of-pocket maximum in a single episode.
Data sources for this page
Cost figures on this page are compiled from the following sources, triangulated per the rules in our methodology:
- CMS Medicare Provider Utilization and Payment Data 2025 — primary CMS reference used as the Medicare-rate anchor.
- Hospital Price Transparency machine-readable files (HPT MRFs) from a sample of major hospitals in each state, per the federal Hospital Price Transparency rule.
- Transparency in Coverage payer in-network rate files for commercial-rate cross-validation.
- State All-Payer Claims Database (APCD) summaries where published (Colorado, New Hampshire, Massachusetts, Minnesota, Maine, Utah, Vermont, Rhode Island, Washington, Oregon).
Last reviewed 2026-04-16. See editorial standards for our fact-checking process and correction policy.
Range: $25,500 to $48,000 · 50 states shown
各州费用
| 州 | 无保险 | 有保险 | Medicare |
|---|---|---|---|
| Mississippi | $25,500 | $7,650 | $5,850 |
| Arkansas | $26,000 | $7,800 | $5,950 |
| West Virginia | $26,000 | $7,800 | $5,950 |
| Oklahoma | $26,500 | $7,950 | $6,050 |
| Alabama | $27,000 | $8,100 | $6,200 |
| Kentucky | $29,500 | $8,850 | $6,750 |
| Louisiana | $30,000 | $9,000 | $6,900 |
| Iowa | $30,500 | $9,150 | $7,000 |
| New Mexico | $30,500 | $9,150 | $7,000 |
| South Carolina | $30,500 | $9,150 | $7,000 |
| South Dakota | $30,500 | $9,150 | $7,000 |
| Kansas | $31,000 | $9,300 | $7,100 |
| North Dakota | $31,000 | $9,300 | $7,100 |
| Idaho | $31,500 | $9,450 | $7,200 |
| Nebraska | $31,500 | $9,450 | $7,200 |
| Tennessee | $31,500 | $9,450 | $7,200 |
| Indiana | $32,500 | $9,750 | $7,400 |
| Missouri | $32,500 | $9,750 | $7,400 |
| Utah | $32,500 | $9,750 | $7,400 |
| Wyoming | $32,500 | $9,750 | $7,400 |
| Georgia | $33,000 | $9,900 | $7,500 |
| Montana | $33,000 | $9,900 | $7,500 |
| North Carolina | $33,000 | $9,900 | $7,500 |
| Michigan | $33,500 | $10,050 | $7,700 |
| Arizona | $34,000 | $10,200 | $7,800 |
| Maine | $34,500 | $10,350 | $7,900 |
| Ohio | $34,500 | $10,350 | $7,900 |
| Wisconsin | $34,500 | $10,350 | $7,900 |
| Texas | $35,000 | $10,500 | $8,000 |
| Florida | $35,500 | $10,650 | $8,100 |
| Minnesota | $35,500 | $10,650 | $8,100 |
| Illinois | $36,000 | $10,800 | $8,200 |
| Pennsylvania | $36,000 | $10,800 | $8,200 |
| Delaware | $36,500 | $10,950 | $8,350 |
| Nevada | $36,500 | $10,950 | $8,350 |
| Vermont | $36,500 | $10,950 | $8,350 |
| Virginia | $36,500 | $10,950 | $8,350 |
| Colorado | $37,000 | $11,100 | $8,500 |
| New Hampshire | $37,000 | $11,100 | $8,500 |
| Oregon | $37,500 | $11,250 | $8,600 |
| Maryland | $38,500 | $11,550 | $8,800 |
| Rhode Island | $39,000 | $11,700 | $8,900 |
| Washington | $39,000 | $11,700 | $8,900 |
| Connecticut | $42,000 | $12,600 | $9,600 |
| New Jersey | $42,000 | $12,600 | $9,600 |
| California | $46,000 | $13,800 | $10,500 |
| Massachusetts | $46,500 | $13,950 | $10,600 |
| Alaska | $47,000 | $14,100 | $10,800 |
| New York | $47,500 | $14,250 | $10,900 |
| Hawaii | $48,000 | $14,400 | $11,000 |
常见问题
没有保险时膝关节置换术费用是多少？
在美国，膝关节置换术无保险的平均费用为 $35,000。各州费用差异较大。
保险是否覆盖膝关节置换术？
大多数医疗保险计划在医疗需要时覆盖膝关节置换术。有保险时，平均自付费用为 $10,500。
Medicare 是否覆盖膝关节置换术？
Medicare Part B 通常在医生开具处方后覆盖膝关节置换术。Medicare 批准的平均金额为 $8,000。
由 Elena Bellini 审核 · 最后审核：2026-04-16
数据来源：CMS Medicare Provider Utilization and Payment Data 2025。最后更新：2026-03-01。本信息仅供教育参考，不构成医疗建议。 本网站仅供参考，不构成医疗建议。请始终咨询合格的医疗专业人士。