The prevalence of joint replacement surgery is rising among individuals under 50, driven by factors such as past injuries, particularly from sports, and the impact of obesity, which accelerate joint degeneration. Younger patients often seek to maintain an active lifestyle and may opt for surgery when pain and functional limitations persist despite non-surgical treatments.

The prevalence of joint replacement surgery is rising among individuals under 50, driven by factors such as past injuries, particularly from sports, and the impact of obesity, which accelerate joint degeneration. Younger patients often seek to maintain an active lifestyle and may opt for surgery when pain and functional limitations persist despite non-surgical treatments.

The prevalence of joint replacement surgery is rising among individuals under 50, driven by factors such as past injuries, particularly from sports, and the impact of obesity, which accelerate joint degeneration. Younger patients often seek to maintain an active lifestyle and may opt for surgery when pain and functional limitations persist despite non-surgical treatments.

Historically, joint replacement was largely linked to people in their 60s and 70s. Today, more and more orthopaedic patients are younger than 50 years of age and are presenting with severely damaged joints. This doesn’t mean early surgery for everyone with joint pain. Rather, it is a reflection of a changing patient profile and the effect of injuries, lifestyle and degenerative conditions at a younger age.

One key factor is old injury. Sports injuries, torn ligaments, fractures and subsequent surgeries can all gradually damage the joint and accelerate arthritis. In a 2024 study of patients undergoing total knee replacement, 28 per cent of those operated on before age 50 had post-traumatic arthritis versus 7 per cent in older patients. The younger group also had significantly more previous ACL injuries and knee surgeries.

Another big factor is obesity. Excess body weight increases the mechanical load of weight-bearing joints and is strongly associated with osteoarthritis. So younger patients who develop severe arthritis along with obesity may reach the stage of requiring joint replacement earlier.

And expectations change as well. Today, people in their 40s want to stay physically active, work without limits and travel, play sports and be active in family activities. When other treatments no longer provide meaningful relief, it is even harder to accept living with ongoing pain, stiffness and limited mobility for years.

But there is no reason to decide on joint replacement based on age alone. Surgery is generally considered if pain and functional limitation are substantial, imaging reveals severe joint damage and suitable non-surgical treatments such as physiotherapy, weight management, medication and activity modification have not resulted in sufficient pain relief.

For younger patients, the issue is longevity. But younger, more active patients have more years of use ahead of them and may face a greater lifetime risk of revision surgery. However, a replacement joint can provide significant pain relief and improve function. Recent evidence demonstrates promising implant survivorship and functional outcomes in well-selected patients below 50 years of age, but long-term revision still plays an important role in the discussion.

The aim should not be to replace a joint just because a person is young or because the operation exists. This is a procedure of last resort for irreparably damaged joints when all other reasonable options have been exhausted to restore quality of life.

In the younger patient a complete workup is indicated. Knowing what is causing the joint damage, considering overall health and activity levels, optimising weight and muscle strength, and selecting the most suitable surgical or joint-preserving option can make a big difference.

Joint replacement at 45 isn’t unthinkable now. But it has to be a carefully considered decision, not a shortcut for pain that can still be managed without surgery.

(The author is a senior consultant trauma & orthopaedics surgeon at HOSMAT Hospital)

The opinions expressed in this article are those of the author and do not purport to reflect the opinions or views of THE WEEK.

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