One of the most common questions younger patients ask is whether they are "too young" for a hip or knee replacement. The answer is nuanced. Age-related factors do play a role in the decision, but there are no hard age cutoffs. Instead, I assess patient-specific elements — overall health, bone quality, activity level, and symptom severity — to determine if joint replacement is appropriate, regardless of chronological age.
What Really Matters
I have performed total hip replacements on patients as young as 21 years old. Age alone does not preclude surgery. What matters far more is whether the patient has genuine joint disease, whether they are medically fit for surgery and anaesthesia, and whether the potential benefits outweigh the risks.
We always try to optimise non-operative measures first before recommending surgery. This includes physiotherapy, weight management, pain medications, walking aids, and activity modification. Surgery is considered when these measures have been exhausted and quality of life is significantly impacted. For younger patients, the revision rate data is important to understand — a joint replacement performed at 35 may need to be revised at 55 or 65, and revision surgery is more complex than the primary procedure. The decision is always individual, and we will discuss your specific circumstances, activity goals, and long-term expectations at your consultation.
"Age is just a number. Fitness, health, and genuine joint disease — these are the true determinants of suitability."
— Dr Chien-Wen LiewSpecific Considerations for Younger People
For younger patients considering joint replacement, I focus on several specific factors. First, I confirm that there is genuine, significant joint disease requiring surgery — not just pain or minor arthritis. Second, I assess whether conservative treatments (physiotherapy, weight management, activity modification) have been exhausted. Third, I evaluate overall health and fitness for surgery.
Activity level is considered carefully in younger patients. If a young person has demanding physical or sports goals, we discuss how joint replacement may affect those activities. Most joint replacements perform well with activity, but very high-impact sports may accelerate wear over time.
Watch Dr Chien-Wen Liew discuss this topic.
The Reality of Young Patients with Joint Disease
There is no established lower age limit for hip or knee replacement. Some younger patients have early-onset osteoarthritis due to genetic factors, previous injuries, inflammatory conditions, or developmental abnormalities. If surgery would significantly improve their function and quality of life, it is appropriate to proceed regardless of age.
The 21-year-old who received their hip replacement had severe osteoarthritis and significant functional limitation. They were otherwise healthy and medically fit. The surgery transformed their quality of life — they can now walk pain-free and pursue normal activities that were impossible before surgery.
What You Should Ask Instead
Rather than asking "Am I too young?", ask yourself these questions: Do I have genuine, significant joint disease? Have conservative treatments not worked? Am I medically fit for surgery? Would joint replacement improve my daily function and quality of life? If you answer yes to all four, then age is likely not the barrier to surgery.
A thorough assessment by your orthopaedic surgeon will determine your suitability. This includes physical examination, imaging, blood tests, and often cardiopulmonary evaluation to ensure you are fit for anaesthesia. The goal is always to help you regain function and relieve pain — age is secondary to that goal.
Assess Your Suitability
A detailed guide to factors that determine if you're a good candidate for joint replacement.