Returning to sport is just another milestone, not the end.
TLDR – Follow the link to my instagram
A common presentation we see in sports physiotherapy is an athlete returning with a painful or swollen knee six months, twelve months or even several years after surgery.
They may have returned to football, netball, basketball, running or recreational sport. They may have completed a long rehabilitation process and successfully played for an extended period.
However, somewhere along the way, the gym work gradually declined. It became repetitive. They were back playing sport, so it did not feel necessary anymore. But the athlete is still asking the knee to run, jump, land, accelerate, decelerate and change direction. The targeted strength training that helped the knee tolerate those demands is no longer part of the weekly routine.This is where I think a mortgage analogy can be helpful.
Early rehabilitation is like saving for a deposit
The first phase after surgery often requires a significant investment and sacrifice, much like saving for a house deposit.
The athlete may need to step away from their sport or substantially modify their participation. They may spend several days each week in the gym or at a rehabilitation facility rebuilding strength, restoring range of motion, controlling swelling, optimising movement quality and gradually reintroducing running, landing, jumping and change-of-direction tasks.
Like saving for a deposit, this phase requires sacrifice. It takes time, focus and repetition over many months.
When the athlete returns to sport, it can feel like the job is finished. It is an important milestone and a time to celebrate.But the job is not done.
In reality, the job is never completely done while the person still aspires to play high-impact sport.Slapping the sold sticker on the auction board does not mean the financial commitment is over. It means the mortgage repayments begin. The sacrifices may become smaller, but consistent investment is still required.
Returning to sport is the start of the repayment phase
A reconstructed or repaired knee is not necessarily a bad knee.
Surgery can restore stability, repair damaged tissue and create an opportunity for someone to return to a high level of function.
But surgery does not make the original injury unhappen.
Putting it bluntly, your knee now has a history. It may function extremely well, but it is not a blank slate.
A knee that has experienced an ACL rupture, meniscal injury, cartilage injury or multi-ligament trauma may not respond to load in exactly the same way as it did before the injury. Its passive structures may need greater support from the active system (muscles) if the athlete wants to tolerate the high loads of sport. The great thing is, we know this is more than possible! This does not mean the athlete needs to live in fear of movement or stop playing sport. But the way they go about their week needs to change.
It means they should approach the new normal with their eyes open and understand what is required to keep the knee functioning at the highest possible level.
Paying your dues
Ongoing strength work should be viewed as part of the cost of continuing to participate. It is the regular direct debit that remains due.
The early rehabilitation phase may involve a larger investment. Once the athlete is back playing, the program can often become more efficient and sustainable.But it should not disappear completely. The repayments still need to be made. Playing sport is not enough to maintain knee function.
Sport is an excellent way to expose the body to movement, metabolic demands, high forces and decision-making under pressure.
However, playing sport does not automatically maintain every physical quality required to support performance and tolerate load.
This can be a confusing concept for someone who played sport before their injury without supplementary strength and conditioning. But the game changes after a significant injury. The absence of an injury in the past does not necessarily mean the risk was never there.
A field or court session may include hundreds of accelerations, decelerations, landings and changes of direction. These are meaningful exposures, but they may not provide a sufficient or progressive strength stimulus.
How much is the repayment?
Targeted gym work allows us to maintain qualities that can otherwise gradually decline:
• Quadriceps strength to tolerate knee-dominant loading
• Hamstring strength to support force production and control
• Hip strength to contribute to trunk and lower-limb control
• Calf and plantar-flexor strength to manage running, jumping and repeated ground contacts
• Eccentric strength to absorb force when landing or slowing down
• Power and rate of force development to produce force quickly
• Confidence and movement quality during high-speed or reactive tasks
The objective is not to build the largest possible program.
It is to identify the most important qualities for the athlete and maintain them with a realistic weekly dose.
Importantly, maintenance may require less time than many athletes assume.
In a study of professional footballers, Rønnestad and colleagues found that one strength-maintenance session per week was sufficient to retain strength and sprint improvements over the first twelve weeks of the season. By comparison, completing one session every second week was not enough to maintain the same gains. This does not mean one weekly session is the correct prescription for every athlete or every post-operative knee. Some people will need more support depending on their injury history, symptoms, sport and training load.
But it highlights an important point: a sustainable maintenance program does not need to dominate your week to make a meaningful difference.
Consistency matters. Compound Interest or missed repayments
A painful or swollen knee can create a difficult cycle. When a knee becomes painful or swollen, the athlete may begin to move differently.
They may feel apprehensive when landing or decelerating. They may become less confident when changing direction and adopt new strategies to spare the knee. The quadriceps may become more difficult to activate effectively. Gym sessions can feel harder or more painful, so strength work is reduced even further.
Sport continues, but the athlete may rely more heavily on the other limb or adopt compensatory movement strategies.
This can contribute to further deconditioning and an increasingly difficult cycle:
Reduced strength training → lower physical capacity → sport becomes relatively more demanding → pain or swelling increases → movement strategies change → confidence declines → strength work becomes more difficult and less effective
The solution is not always to stop activity completely.
Sometimes a temporary reduction in training intensity, volume or frequency is sufficient when combined with targeted strength work.
However, it is not always appropriate to push through symptoms. A persistently painful or swollen knee should be assessed properly.
Setting up a payment plan
The first step is to understand why the knee is reacting. From there, the athlete may need to temporarily modify training loads, rebuild strength and gradually restore exposure to the movements that matter for their sport.
Maintenance should be discussed earlier – Talk about maintenance expectations
This conversation should not begin when an athlete returns with a swollen knee years after surgery. It should begin before surgery or during the early stages of rehabilitation. Athletes deserve to understand that completing rehabilitation is not the same as permanently fixing the issue.
Optimism is important, but so is honesty.
Knowing your obligations – Read the contract
We should set expectations early and help the athlete understand the requirements of both rehabilitation and long-term maintenance. It is a little like receiving the giant pack of loan documents when buying a house. You need to understand what you are signing up for. The longer-term objective is to develop a sustainable system that allows the athlete to keep doing what they enjoy.
For some people, this may involve one or two purposeful strength sessions each week during the season. For others, the dosage may need to change depending on their injury history, sport, training load, symptoms and performance goals.
The program does not need to dominate their life.
It should become a sustainable part of their routine, just like attending training. But it cannot disappear completely while the demands of sport remain high.
The goal is not fear. It is ownership. Take control
This is not a message that athletes with a history of knee surgery are fragile.
It is the opposite. A well-managed post-operative knee can tolerate a lot. Many athletes return to demanding sports and perform at an excellent level.
The goal is to give the athlete a realistic understanding of what supports that outcome and the ongoing investment required.
Rehab is the deposit. Returning to sport is a major milestone.
But maintaining the strength, power and movement qualities that helped you get there is the mortgage repayment that allows you to keep enjoying the house.