Who Is a Candidate for an Orthopedic Injection? Eligibility Criteria Explained
Orthopedic injections are a minimally invasive way to manage joint pain and inflammation without surgery. They help people stay active, move comfortably and protect long-term joint health. But not everyone qualifies. Eligibility depends on the condition, medical history and treatment goals. Some patients need only one injection; others need a full plan that matches their health needs. This article explains who is a good fit and how clinicians decide when injections are the right choice.
Understanding Orthopedic Injections
Orthopedic injections deliver targeted care to joints and soft tissues. They can calm inflammation, improve movement or support the body’s natural repair process, and are used for knee pain, shoulder stiffness, tendon irritation and other common joint problems.
- Corticosteroid injections settle inflammation.
- Hyaluronic acid viscosupplements add lubrication and cushioning inside the joint. Options available in Canada include SYNVISC®, MONOVISC®, DUROLANE® and ORTHOVISC®.
- Combination products such as CINGAL® combine hyaluronic acid and a corticosteroid.
- Platelet-rich plasma (PRP) uses a small sample of the patient’s blood to support healing.
Each type works differently, which is why clinicians choose the one that fits the diagnosis. Timing is often discussed at the first appointment too: the frequency of orthopedic injections depends on the product, the joint and the patient’s activity level.
General Eligibility for Orthopedic Injections
A person becomes eligible when their symptoms match what the treatment is designed to address. Injections are often recommended for osteoarthritis of the knee, hip or shoulder, a condition that affects more than four million Canadians according to Arthritis Society Canada. They are also used for tendinitis, bursitis and chronic joint inflammation that does not improve with rest or simple medication.
Eligibility is confirmed through a physical examination and diagnostic imaging. An X-ray or MRI shows how much joint space remains, whether inflammation is present and whether the joint structure is stable. Clinicians also review past treatments: if a patient has tried physiotherapy but pain still returns during daily activity, an injection may be the next step.
Patients with mild to moderate symptoms usually benefit the most, because their joints still move well enough to respond. In these cases, injections can reduce discomfort and help delay surgery, which matters in provinces where wait times for joint replacement can be long.
Key Eligibility Criteria
Clinicians usually work through a clear checklist:
- Persistent pain that does not improve with rest, activity modification or over-the-counter medication.
- A stable joint, without severe destruction of bone or cartilage. When the structure is too damaged, surgery is often more appropriate.
- No active infection at or near the injection site.
- Well-managed general health. Chronic conditions such as diabetes should be under control, especially before a corticosteroid injection, which can temporarily raise blood sugar.
- Realistic expectations. Injections help manage symptoms and improve movement, but they do not reverse every aspect of the condition.
These criteria help avoid unnecessary procedures and ensure injections are used safely. Our article on orthopedic injection safety explains the precautions in more detail.
Who Should Avoid or Delay Orthopedic Injections
Some patients should delay or avoid injections entirely:
- People with an active infection or an uncontrolled bleeding disorder, until these issues are treated.
- People allergic to a component of the injection, such as a local anaesthetic, a corticosteroid or, for some products, avian proteins. The product monograph or instructions for use list the specific contraindications.
- Patients with very advanced joint degeneration, where the joint structure can no longer benefit from treatment.
- Patients who have recently received several injections in a short period. The joint needs time to recover before another treatment.
Evaluating Patient Health Before Treatment
Before recommending an injection, the clinician completes a health screening. The physical exam focuses on pain location, range of motion and the joint’s reaction to pressure.
- Imaging confirms what the exam suggests: X-rays show bone changes, while MRI shows soft tissue.
- Ultrasound can guide the injection for greater accuracy.
- The clinician reviews medications, especially anticoagulants, as well as allergies and previous injection experiences.
Screening is careful but simple. Its purpose is to protect the patient and match the treatment to their needs. In Canada, who may perform the assessment and the injection depends on the province and the professional college.
Preparing for Orthopedic Injection Treatment
Once a patient qualifies, preparation begins. The clinician may ask the patient to pause certain medications if it is safe to do so. Staying hydrated helps, light activity is usually fine, and intense exercise may be discouraged the day before. PRP may require small adjustments because blood is drawn during the appointment, while viscosupplement or corticosteroid injections usually involve fewer steps.
Our guide to preparing for an orthopedic injection covers each step.g instructions helps the procedure run smoothly and increases comfort during and after the session.
When to Consider Alternatives
Not every patient meets the eligibility criteria, and that is normal. Physiotherapy remains a strong option for building strength and reducing joint stress. Exercise programs adapted to joint health, weight management and topical or oral medication under medical guidance also help many people stay active.
When symptoms are severe or the joint is significantly damaged, surgery may be the safer route. Clinicians discuss these alternatives so patients understand every option, not just injections. Clinics can review the full range of viscosupplements and combination products in our orthopedic injections category.
References
Bhadra, A. K., et al. (2016). Appropriate use criteria for hyaluronic acid in the treatment of knee osteoarthritis. PMC. https://pmc.ncbi.nlm.nih.gov/articles/PMC5625860/
Vale Health Clinic. (2025, August 27). Patient selection criteria for hyaluronic acid injections. https://valehealthclinic.co.uk/patient-selection-criteria-for-hyaluronic-acid-injections/
Minnesota Department of Labor and Industry. Orthopedic injection therapy: Types and effectiveness. https://www.dli.mn.gov/sites/default/files/pdf/rehab_update_orthopedic_injection_therapy.pdf
Arch Orthospine. Who is the ideal candidate for orthopedic injections? https://archorthospine.com/who-is-the-ideal-candidate-for-orthopedic-injections/
ZMed Solutions. (2023, December 20). The art and science of orthopedic joint injections: Your comprehensive overview. https://www.zmedsolutions.net/the-art-and-science-of-orthopedic-joint-injections-your-comprehensive-overview/
