Conditions
Sports Injuries: Persistent Pain, Recovery and Return to Sport
"I can function normally, but every time I return to my sport, the pain comes back." At Centre Algos in Fribourg we assess persistent, recurrent and load-related sports pain, and how to get back to training.
Sport-related pain can follow an acute injury, repeated loading, gradual overload or an earlier injury that remains symptomatic, and it can appear as soon as training volume or intensity increases. The same words, sports injury, therefore cover very different clinical situations.

It describes the runner whose knee hurts whenever mileage increases, the athlete with recurring Achilles or patellar tendon pain, the ice hockey player with persistent joint or muscle symptoms, the tennis player whose elbow or shoulder flares each season, and anyone returning to skiing, football, cycling or gym training after an injury.
At Centre Algos in Fribourg we start from your sporting history, from what actually provokes the symptoms and from what has already been done, then discuss the treatment options that fit and a graded return that matches your sport.
Acute injury, gradual overload and persistent pain
The words sports injury cover very different clinical situations, which are neither assessed nor managed in the same way.
Acute traumatic injury
This happens at an identifiable moment: an ankle sprain, a muscle tear, a ligament injury, a direct impact or a joint injury. The mechanism is usually clear and the athlete remembers it.
Gradual overload
Symptoms develop because current training demands exceed what a tissue or system can presently tolerate. Patellofemoral pain, Achilles and patellar tendon pain and many muscle or tendon overload problems follow this pattern.
Persistent or recurrent sports pain
The original injury may have recovered enough for ordinary daily life while sport-specific loads still provoke symptoms. That does not automatically mean tissue is being damaged again at every session.
Separating these three situations is not theoretical: it shapes the examination, the pace of the return and which treatments genuinely make sense.
Runner's knee and knee pain when running
Runner's knee usually refers to patellofemoral pain: pain felt around or behind the kneecap, related to how the joint between the kneecap and the thigh bone is loaded.
Typical symptoms
The picture is usually recognisable:
- pain around or behind the kneecap
- pain during or after running
- discomfort on stairs, especially going down
- pain when squatting or jumping
- in some people, discomfort after prolonged sitting
- symptoms that appear when training volume or intensity increases
Why it happens
There is rarely one universal cause. International consensus work on patellofemoral pain describes a combination of factors that differs from person to person.
- a recent change in training load
- the current load capacity of the tissues
- strength of the leg and hip muscles
- movement strategy while running
- the demands of terrain, hills and pace
- a previous injury
- the quality of recovery
- individual anatomy and biomechanics, where clinically relevant
Blaming posture, foot position or a single biomechanical finding as the universal cause does not match current knowledge. An abnormal image does not automatically explain the symptoms either.
What usually helps
Clinical practice guidelines support education, progressive knee-targeted and hip-targeted exercise, temporary load adjustment and, where appropriate, running retraining or other individually selected measures.
That is the foundation. At Centre Algos we start from it and then discuss which complementary approaches may make sense in your situation.
Tendon pain in athletes
Sport-related tendon pain often involves the Achilles tendon, the patellar tendon, the elbow or the shoulder. It tracks closely with loading and changes with what the tendon is asked to handle.
Complete rest often eases symptoms in the short term but is usually not the long-term answer: an unloaded tendon tolerates less when sport resumes. Progressive, dosed loading followed over time remains central.
Symptoms can return when sporting demand rises faster than current capacity. The mechanisms behind persistent tendon pain are covered in detail on our tendinopathy page.
Muscle injuries and recurrent strains
Sport-related muscle injuries frequently involve the hamstrings, calf, quadriceps or adductors, typically during sprinting, acceleration, change of direction or explosive effort.
Returning too early, or returning without the sport-specific capacity the activity requires, raises the risk of recurrence. Consensus work on muscle injury emphasises graded progression rather than a fixed number of weeks.
Graded re-exposure covers running, sprinting, acceleration and deceleration, jumping and change of direction, depending on the sport. No programme removes the risk of recurrence, but a coherent progression makes it more manageable.
Sprains and joint-related sports pain
Ankle sprain is one of the most common sports injuries, and the knee, shoulder or wrist are frequently involved too.
Once serious injury has been excluded or treated, some people continue to experience pain, stiffness, reduced load tolerance, a sense of instability or reduced confidence during sport.
Persistent symptoms deserve assessment rather than being read automatically as an injury that never healed. Often there is a gap between current capacity and sporting demand, sometimes with persistent local sensitivity.
Every sport has its own demands
Returning to sport does not mean the same thing for everyone. Planning has to reflect the sport actually practised.
- distance running requires tolerance of repeated loading over long durations
- ice hockey and football require acceleration, deceleration and change of direction
- skiing places distinct joint and neuromuscular demands, often eccentric
- cycling involves sustained positions and repeated loading at high cadence
- tennis repeatedly loads the shoulder, elbow and lower limbs
- strength training requires structured load progression and good joint tolerance
A runner who can run thirty minutes without pain is not in the same position as a player who has to absorb contact and sharp changes of direction.
Why sports pain can keep coming back
The core idea is simple: the load being asked for exceeds current capacity. Several factors can contribute, and several often coexist.
- training volume increasing too quickly
- intensity increasing too quickly
- insufficient recovery between sessions
- inadequate strength or sport-specific capacity
- a previous injury
- rehabilitation stopped before it was complete
- an abrupt return to competition
- poor sleep and limited recovery
- inadequate nutrition, where clinically relevant
- a diagnosis that does not fully explain the presentation
- pain sensitivity that persists after the original injury
- other musculoskeletal or neurological factors
Not every recurrence is explained by deficiencies, inflammation or a general imbalance. When pain outlasts the expected healing period, the mechanisms described on our chronic pain page can also play a part.
Pain does not always mean new damage
Pain during sport should be taken seriously. It does not necessarily mean tissue is being newly damaged each time symptoms appear, particularly when pain has been present for a long time.
Symptoms can be influenced by local tissue sensitivity, current load tolerance, a previous injury, nervous-system sensitivity, fatigue, recovery and the specific demands of the sport.
This is not an argument for pushing through symptoms. It means the plan is set from the overall clinical picture rather than from the intensity felt at a single moment.
When is imaging useful?
X-ray, ultrasound or MRI is appropriate when the history and examination suggest a fracture, significant structural injury, major ligament injury, tendon rupture, a course that is not following expectations, or another diagnosis that needs clarification. Validated decision rules exist for some situations, such as the ankle.
Outside those situations, imaging is not automatically required for persistent sports pain. It is useful when it can change management.
An imaging abnormality also does not automatically identify the source of pain: changes without symptoms are common in active people and in the general population.
Recovery is not the same as complete rest
Reducing or modifying load for a short period is often appropriate after an injury or a flare of symptoms.
For many musculoskeletal sports problems, however, prolonged complete inactivity is not the objective and can reduce physical capacity, making the return to sport more difficult.
Recovery usually means gradually rebuilding the ability to tolerate the movements and loads the sport requires. The dose is set individually rather than by a general rule.
Return to sport
Return to sport is a process rather than a date. International consensus frameworks separate three stages that are not the same thing.
- return to participation and training
- return to the sport itself, with its real demands
- return to previous performance
Progress depends on symptoms, strength, function and movement quality, confidence, sport-specific capacity, response to training, the type of injury and any medical considerations. The decision is made together with the athlete, not for them.
Return to running
For running, progression usually involves several variables, rarely changed at the same time:
- alternating walking and running
- session duration
- distance covered
- weekly frequency
- speed
- hills
- intervals
The principle is neither to wait for zero pain before starting nor to run through significant symptoms. Progression follows the response during the session and over the following twenty-four hours.
How we assess sports-related pain
Our assessment starts from your sporting history and from what has already been done:
- how the injury started, suddenly or gradually
- the sport involved and its level of demand
- training volume and any recent changes
- competition demands ahead
- where the symptoms are
- how they behave during and after activity
- previous injuries
- previous treatment and rehabilitation
- current functional limitations
- imaging already carried out
- medical history and current medication
- sleep and recovery where relevant
- nutrition where relevant
- a targeted physical and neurological assessment
- whether further investigation or medical referral is appropriate
The aim is to understand why you are currently limited and which factors can realistically be influenced. The treatment plan is then built together with you.
Percutaneous hydrotomy
At Centre Algos, percutaneous hydrotomy may be considered in selected persistent sport-related musculoskeletal pain presentations: persistent knee symptoms in runners, selected tendon-related complaints, joint-related pain and persistent regional pain, including symptoms following an earlier sports injury.
Depending on the clinical situation, it may also be relevant in selected nerve-related or radicular presentations.
Wilfried Beijersbergen has particular clinical experience using this approach with active patients, including runners with persistent knee symptoms.
We explain the therapeutic rationale, the expected benefits, the available evidence and any uncertainties, and where appropriate integrate the treatment into a broader strategy that can also include progressive rehabilitation, load management and a graded return to activity.
Functional biology and micronutrition
For some athletes, nutritional or metabolic questions are part of the clinical picture: overall nutritional status, a clinically relevant deficiency, iron status where indicated, vitamin B12 or vitamin D depending on the situation, metabolic health, recovery difficulties or fatigue accompanying repeated injuries.
Not every athlete needs laboratory testing. The principle stays the same: targeted testing should answer a clinical question and should have the potential to change the strategy.
Centre Algos can prescribe targeted blood testing, including investigations beyond a routine standard panel when clinically justified. Where a clinically meaningful deficiency or laboratory abnormality is identified, it can inform a more targeted strategy, discussed with you and reviewed over time.
Low energy availability
Recurrent injuries, poor recovery, lasting fatigue or declining performance can sometimes occur in the context of energy intake that is insufficient for the training load. IOC consensus work describes this in male as well as female athletes.
This is not diagnosed from nonspecific symptoms. Where the history raises the question, broader medical or nutritional assessment is appropriate.
Naturopathy
Naturopathy can be relevant where sleep, recovery, nutrition, stress, training rhythm or general health form part of the clinical picture.
These factors are not the universal cause of sports injuries. They are addressed alongside the musculoskeletal assessment, when they genuinely matter in your situation.
Phytotherapy
Phytotherapy may be offered as a selected supportive option, chosen according to symptoms, sport and medical context, taking current medication and possible interactions into account, including anticoagulants and certain pain medicines.
Cupping therapy
Cupping therapy can be used selectively for certain muscular tension presentations or for managing localised symptoms, alongside progressive loading work.
When a sports injury needs prompt medical assessment
Some situations take priority over the routine treatment of persistent sports pain and need prompt conventional medical assessment:
- suspected fracture
- obvious deformity or dislocation
- inability to bear weight after a significant injury
- suspected complete tendon rupture
- severe, rapidly increasing swelling
- major joint instability after trauma
- loss of sensation
- new muscle weakness
- signs of compromised circulation, a cold, pale or bluish limb
- severe pain after substantial trauma
- significant head injury or suspected concussion
- neck injury with neurological symptoms
- severe chest or abdominal trauma
- symptoms suggesting infection or another serious medical condition
Where concussion is suspected, recognised medical assessment is required. Centre Algos does not provide emergency sports medicine, concussion management or return-to-play clearance after concussion.
Consultation at Centre Algos
The consultation is used to understand the injury history, the real demands of your sport, previous diagnosis and treatment, what currently provokes symptoms and what limits you in practice.
We consider whether further investigation is appropriate, identify clinically relevant contributors and discuss the treatment options available, including the place of appropriate rehabilitation and conventional medical care.
We explain what appears clinically plausible, what remains uncertain and which next steps or treatment options can reasonably be considered. The plan is then built together with you, with realistic steps.
Frequently asked questions
- Why does my sports injury keep coming back?
- Usually because the load being asked for exceeds current capacity: returning too quickly, rehabilitation stopped early, insufficient strength or sport-specific capacity, limited recovery, or a diagnosis that does not explain everything. Working out which of these dominates in your case is what the assessment is for.
- Why does my knee hurt every time I run?
- Knee pain that appears reliably with running often suggests patellofemoral pain, especially when it sits around or behind the kneecap and worsens on stairs or when squatting. It frequently follows an increase in volume, pace or hills.
- What is runner's knee?
- The term usually refers to patellofemoral pain, felt around or behind the kneecap and related to loading of the joint between the kneecap and the thigh bone. It is neither inevitable wear nor a single uniform diagnosis.
- Should I stop running if my knee hurts?
- Not necessarily. Temporarily adjusting volume, pace or hills, combined with progressive strengthening, is often enough. Long periods of complete rest reduce capacity and make the return harder. Severe pain, swelling or locking should be examined.
- How do I know when I am ready to return to sport?
- Readiness is judged on several criteria: how symptoms are evolving, strength, movement quality, sport-specific capacity, confidence and how you respond to training sessions. It is a graded process rather than a date fixed in advance.
- Do I need an MRI for a sports injury?
- Not routinely. Imaging is useful when examination suggests a fracture, significant structural injury, tendon rupture or an unusual course. In overuse problems it often does not change management and may show findings unrelated to the symptoms.
- Can an old sports injury start hurting again?
- Yes. A previously injured area can stay more sensitive or tolerate certain loads less well, particularly when training increases. That does not necessarily mean a new injury, but it is worth assessing.
- Why does my tendon hurt when I increase training?
- Tendon pain follows loading closely. When demand rises faster than the tendon's current capacity, symptoms appear, often at the start of a session or the next day. Structured, graded loading usually works better than rest alone.
- Is complete rest best for an overuse injury?
- Rarely over time. A temporary reduction in load often helps, but prolonged complete inactivity lowers tissue tolerance. The objective is to rebuild capacity for the demands of the sport step by step.
- Can I return to sport before I am completely pain-free?
- In many situations yes, provided progression is controlled and the response to it stays acceptable. After a structural injury, more specific criteria apply. This decision is made case by case.
- Can percutaneous hydrotomy be considered for sports-related pain?
- It can be considered in selected persistent sport-related musculoskeletal presentations, after clinical assessment. It forms part of a wider strategy and does not replace progressive loading.
- Can hydrotomy be used for runner's knee?
- We have clinical experience using hydrotomy with runners who have persistent knee symptoms. Whether it is appropriate depends on the individual presentation and is assessed as part of the wider treatment and return-to-activity strategy.
- Can blood tests be useful when sports injuries keep recurring?
- Sometimes. Where the history suggests persistent fatigue, poor recovery or insufficient energy intake, targeted testing such as iron status can be justified. It is not a standard panel for every athlete.
- When does a sports injury need urgent medical assessment?
- With suspected fracture, obvious deformity, inability to bear weight, suspected tendon rupture, rapidly increasing swelling, major joint instability, loss of sensation, new weakness, head injury or suspected concussion. These take priority over treating persistent pain.
- Can Centre Algos help if I have already had physiotherapy?
- Yes, and without setting the two against each other. Rehabilitation and progressive exercise remain essential. We assess the wider clinical picture, including factors not yet explored, and our treatments can be considered alongside appropriate rehabilitation.
Related treatments
Percutaneous Hydrotomy
Considered in selected persistent sports pain presentations: knee symptoms in runners, selected tendon or joint complaints, regional pain after an injury.
Functional Biology & Micronutrition
Targeted testing when recovery, fatigue or insufficient intake are part of the picture, for example iron status.
Naturopathy
Work on sleep, recovery, nutrition, stress and training rhythm, alongside the musculoskeletal assessment.
Phytotherapy
A selective supportive option, chosen according to symptoms, sport and current medication.
Cupping Therapy
Used selectively for certain muscular tension or localised sport-related symptom management.
Medical sources and further reading
- BJSM, international consensus on patellofemoral painReference framework for the mechanisms and management of runner's knee.
- JOSPT, clinical practice guideline on patellofemoral painProgressive exercise, education and individually selected interventions.
- BJSM, Bern consensus on return to sportReturn to sport as a staged process decided through shared decision making.
- BJSM, ICON consensus on tendinopathy terminologyCurrent terminology and model for load-related tendon pain.
- BJSM, Munich consensus on muscle injuriesMuscle injury classification and principles of graded re-exposure.
- BJSM, IOC consensus on relative energy deficiency in sportContext for insufficient energy availability in female and male athletes.
- BMJ, Ottawa ankle and foot rulesAn example of selective imaging after trauma.
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