LDRT vs. Hip Replacement: Which Is Right for You?

These two options are not really competing for the same job. Hip replacement removes the damaged joint and installs a working one. LDRT leaves the joint alone and tries to quiet the pain. Which one fits you depends on how far your arthritis has gone, what your health allows, and what you need out of the result. Here is an honest look at both, starting with what each actually does.

What Hip Replacement Does

Total hip replacement is, in the words of the American Academy of Orthopaedic Surgeons, "one of the most successful operations in all of medicine"^[1]. More than 450,000 are performed each year in the United States. The surgeon removes the worn-out ball and socket of the hip and replaces them with artificial parts. Most people who have it "experience a dramatic reduction of hip pain and a significant improvement in their ability to perform the common activities of daily living"^[1].

The results hold up over time. A Lancet meta-analysis of case series and national registries found pooled implant survival of 85.7 percent at 15 years, 78.8 percent at 20 years, and 77.6 percent at 25 years^[2]. One long-term follow-up study reported 96 percent patient satisfaction an average of 16 years after surgery^[3]. It is a safe operation: serious complications such as joint infection occur in fewer than 2 percent of cases^[1].

The price of all that is that it is major surgery: anesthesia, a hospital stay, and weeks to months of rehabilitation. Surgeons recommend it when pain limits your everyday activities, pain occurs even at rest, stiffness restricts leg movement, and anti-inflammatory drugs, physical therapy, and walking supports have not given adequate relief^[1].

What LDRT Does for Hip Arthritis

LDRT is a course of low-dose radiation treatments aimed at reducing arthritis pain. It does not replace anything, resurface the joint, or correct bone-on-bone deformity. For hip arthritis specifically, the evidence is thinner than for knees and hands. Hip studies are small, but it is real.

In 2026, the American Radium Society published appropriate-use criteria for low-dose radiotherapy in osteoarthritis. A multispecialty panel of radiation oncologists, rheumatologists, orthopedic surgeons, and a patient advocate reviewed 44 studies plus 8 supplemental analyses and reported overall response rates of 60 to 90 percent for pain reduction, mobility, and quality of life^[4]. For the hip specifically, the panel concluded that LDRT "may be appropriate for the typical case with OA of the hip when refractory or unable to tolerate other therapies." That means patients who have exhausted conservative treatments, medications, and injections and are not candidates for surgery^[4].

The panel was honest about the limits: for the most advanced hip arthritis (Kellgren-Lawrence grade 4), response rates were estimated at 40 to 50 percent, lower than for earlier stages^[4]. A 2025 U.S. retrospective study of 69 patients and 168 joints found 80 percent of joints had significant pain improvement at the end of treatment and 72 percent maintained it at the 10-week follow-up, with no significant difference across joint types; the authors called for randomized trials to confirm the findings^[5]. A small 2019 study including 4 hips found 50 percent of joints had clinically relevant pain reduction at 6 weeks, falling to 25 percent at 52 weeks, and its authors called the long-term effect limited^[6]. And a 2025 meta-analysis of twelve studies found no significant benefit over sham treatment for pain or function^[8]. The current arthritis treatment guideline from the American College of Rheumatology and the Arthritis Foundation does not include LDRT among its recommended treatments^[7].

Put plainly: LDRT is a legitimate option with a growing evidence base, but its long-term evidence is not in the same league as hip replacement's.

Side by Side

• What it changes: replacement removes the diseased joint and installs new parts; LDRT targets pain and leaves the joint structure unchanged.
• The procedure: major surgery with anesthesia and a hospital stay versus outpatient treatment sessions with no anesthesia and no overnight stay.
• Recovery: weeks to months of rehabilitation after replacement; LDRT has essentially no downtime.
• Durability: about 86 percent of hip implants survive 15 years^[2]; LDRT's long-term data are limited, with one small study showing benefit fading in most patients by one year^[6].
• Repeatability: a failed implant needs revision surgery; LDRT can be repeated. A third of joints in one study received a second course with further pain reduction^[5].
• Advanced bone-on-bone disease: replacement is the definitive answer; LDRT's response drops to an estimated 40 to 50 percent at the most advanced stage^[4].
• Can you still have surgery later? Yes. No published data suggest LDRT increases the risks of future surgical procedures, and it is typically used before surgery^[4].

When Each One Makes More Sense

Hip replacement is usually the right call when your arthritis is advanced and bone-on-bone, pain limits your daily life despite medications, physical therapy, and walking supports, and you need a solution that is proven to last decades^[1]. It is the definitive treatment for end-stage hip arthritis.

LDRT is worth discussing when you cannot safely have surgery because of heart, lung, or other health conditions, you have tried conservative measures and are not ready for a replacement, or your arthritis is moderate rather than bone-on-bone. The American Radium Society panel specifically positioned it for patients who are refractory to conservative treatments, medications, and injections and are not candidates for hip arthroplasty^[4]. It can also be a way to buy time: because there is no evidence it jeopardizes a later operation, trying LDRT first does not close the door on surgery^[4].

One honest framing: if you are a good surgical candidate with advanced arthritis, replacement is the stronger bet. The evidence is deep and the durability is measured in decades. If surgery is not an option or you are not ready for it, LDRT is a reasonable, low-burden option to discuss with your doctors. Talk with both your orthopedic surgeon and a radiation oncologist before deciding.

References:
1. Total Hip Replacement. OrthoInfo, American Academy of Orthopaedic Surgeons. OrthoInfo
2. Evans JT, et al. How long does a hip replacement last? A systematic review and meta-analysis of case series and national registry reports with more than 15 years of follow-up. Lancet. 2019;393(10172):647-654. PubMed
3. Mariconda M, et al. Quality of life and functionality after total hip arthroplasty: a long-term follow-up study. BMC Musculoskeletal Disorders. 2011;12:222. PubMed
4. Dove A, et al. American Radium Society (ARS) Appropriate Use Criteria (AUC) for Low-Dose Radiotherapy for Treatment of Osteoarthritis. American Journal of Clinical Oncology. Published online May 25, 2026, ahead of print. PubMed
5. Koneru BN, et al. Low-Dose Radiation Therapy for Osteoarthritis: A Retrospective Single-Institution Analysis of 69 Patients and 168 Joints. International Journal of Radiation Oncology, Biology, Physics. 2025;123(2):352-360. PubMed
6. Koc B, et al. Evaluation of the clinical effectiveness of low-dose radiotherapy for hip and knee osteoarthritis. Strahlentherapie und Onkologie. 2019. PubMed
7. Kolasinski SL, et al. 2019 American College of Rheumatology/Arthritis Foundation Guideline for the Management of Osteoarthritis of the Hand, Hip, and Knee. Arthritis and Rheumatology. 2020;72(2):220-233. PubMed
8. Hammadeh M, et al. Efficacy, safety, and pain management of low-dose radiation therapy in osteoarthritis: a comprehensive systematic review and meta-analysis. Rheumatology International. 2025;45(9):210. PubMed