Achilles Tendon Injuries Brisbane | Tendonitis, Tenosynovitis & Bursitis
Also known as or related to: Achilles tendonitis, Achilles tendinopathy, insertional Achilles tendonitis, Achilles tenosynovitis, retrocalcaneal bursitis, Achilles bursitis, back of heel pain, mid-portion Achilles pain, calf and Achilles pain.
Written and reviewed by Peter Charles, Sports Podiatrist — Shoes Feet Gear, Bardon.
Achilles tendon injuries are among the most common conditions we treat at our Bardon clinic — and among the most mismanaged. The standard advice of rest, wait, and try again is the single biggest reason Achilles injuries become long-term problems. Understanding how tendons actually respond to load, and how to stimulate repair without causing further damage, is what separates a fast recovery from months or years of recurring pain.
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How Achilles Tendons Get Injured
When the load going through the Achilles tendon exceeds what it can handle at that point in time, tendon fibres become injured. This is most commonly a chronic process — repetitive running, jumping and sprinting that accumulates over a game, a week, a sports carnival, or a peak season. Acute injury from a single explosive movement is less common but does occur.
Once fibres are damaged, the tendon becomes weaker. If high-load sport continues, every sprint or jump that pushes above the tendon's current capacity damages more fibres, weakening it further. This cycle continues until the tendon is injured enough to cause pain with everyday activities — walking, climbing stairs, getting out of bed. At that point, patients often present having tried multiple rest periods that didn't work, because rest alone doesn't stimulate repair.
Understanding this mechanism is also the key to understanding how tendons heal. When load through the tendon approaches — but doesn't exceed — its current capacity, sensors in the tendon detect the stress and signal the body to lay down more fibres. Over weeks of carefully managed loading, the tendon thickens with healthy new fibres and progressively regains strength. This is exactly the same principle as progressive resistance training in the gym: the closer you push to the limit without exceeding it, the faster the adaptation.
The reverse is also true. When running and impact are significantly reduced — during a swimming season, a cycling block, or an off-season — tendons down-regulate and become thinner and weaker within weeks. A sudden return to high running load before the tendon has had time to re-adapt is one of the most common triggers for Achilles injury we see. Athletes who develop shin splints during a return-to-running block often have a concurrent Achilles load issue for the same reason.
Types of Achilles Tendon Injury
Mid-portion Achilles tendonitis refers to injury of the tendon fibres in the middle section of the Achilles — above the heel bone but below the calf muscle bulk. This is the most common presentation in distance runners and field sport athletes.
Insertional Achilles tendonitis refers to injury at the point where the Achilles tendon attaches to the back of the heel bone (calcaneus). This location behaves differently from mid-portion injury and requires a modified treatment approach — particularly with strengthening exercises.
Retrocalcaneal bursitis (Achilles bursitis) describes inflammation of the fluid-filled sac that sits between the Achilles tendon and the back of the heel bone. This is not a separate condition — it develops as a result of insertional Achilles tendon injury, and resolves when the tendon injury is properly treated. We manage the bursitis by managing the tendon.
Achilles tenosynovitis is a distinct condition involving inflammation of the lining (sheath) surrounding the tendon, rather than the tendon fibres themselves. It requires a different clinical approach and is covered in detail below.
How We Diagnose — Without Imaging
In the majority of Achilles cases, imaging is not required. We use a detailed history combined with systematic clinical load testing — progressively increasing stress through the tendon — to identify the type of injury, its location, and its severity.
The history tells us a great deal. If pain appears as soon as the patient tries to run, there is no significant swelling, and pain escalates as we increase load through the tendon in the clinic, we are dealing with Achilles tendonitis. If pain only appears towards the end of a long session, there is puffiness and swelling that settles within a day or two of rest, the patient has been doing high volumes of repetitive activity, and pain does not escalate with progressive clinical load testing — that pattern points to tenosynovitis.
The location of pain on palpation distinguishes mid-portion from insertional injury clearly. The behaviour of pain with heel elevation — whether raising the heel relieves or worsens symptoms — provides additional diagnostic information.
Clinical load testing also allows us to grade the injury. If the tendon is significantly weakened, we know early in the assessment. This directly determines what activities are safe, what load the strengthening program should start at, and how quickly we can progress.
When We Use Imaging
When an Achilles injury is not responding as expected to well-managed treatment, or when the clinical picture suggests something additional may be present, we refer for imaging — typically MRI for complex or non-responding cases.
A useful example: a patient presented with long-standing insertional Achilles tendonitis that had not responded to an appropriate course of treatment. MRI revealed a concurrent stress reaction in the heel bone itself — a separate injury that required a period in an air cast boot before the Achilles rehabilitation could be effective. Once the stress reaction was managed, the Achilles treatment worked as expected. Without imaging, that underlying injury would have continued to be missed.
Imaging changes our management when it reveals a co-existing injury, confirms a suspected partial or complete rupture, or rules out other pathology. For straightforward presentations, it adds cost and delay without changing the clinical decision.
Treatment: Protecting the Tendon from Further Injury
The first priority is establishing what load the tendon can currently handle safely, and keeping activity within that limit. We work through each patient's specific activities — sport, training, work, and daily movement — to identify what needs to be modified and what can continue.
A mildly injured tendon that retains most of its strength can often continue playing sport with modifications. A significantly injured tendon may need protection even from prolonged walking. Getting this assessment right is what prevents the cycle of re-injury that turns a short-term problem into a long-term one. Patients presenting with concurrent plantar fasciitis require particular care, as the load modifications for one condition can affect the other.
Treatment: Reducing Compression and Tension
When tendon fibres are injured, they thicken with increased blood flow as part of the repair process. This thickening becomes compressed when the tendon is stretched and loaded, causing pain and irritating the healing fibres. Reducing tension on the tendon provides significant relief and protects the injured area from day-to-day aggravation.
Heel elevation is one of the most effective immediate interventions. Raising the heel reduces the stretch angle on the Achilles, directly reducing compression on the injured fibres. We select specific shoe brands and models with appropriate heel-to-toe drop, and add heel wedges or lifts inside key shoes — particularly work shoes and training shoes. Going barefoot typically aggravates Achilles injuries and should be avoided during the acute phase.
Soft tissue release — massage, foam rolling, and dry needling — releases tension in the calf and soleus , reducing the compressive load on the tendon. An important nuance: for very irritated and inflamed Achilles tendons, stretching can actually increase compression on the injured fibres and worsen symptoms. In these cases we focus on massage, rolling, and dry needling rather than stretching. Once the tendon settles and inflammation reduces, calf stretching becomes a valuable part of the program.
Treatment: Strengthening — The Critical Part
Strengthening is what actually repairs the tendon. The goal is to load the tendon as close to its current capacity as possible — without exceeding it — to maximally stimulate the body to lay down new fibres. This is the same principle as progressive resistance training: the closer you push to the limit, the faster the adaptation.
If we estimate a tendon is currently at, say, 70% of its normal strength, we need to keep sport and activity below that threshold to prevent further injury — and push the rehabilitation exercises as close to that 70% as possible to drive repair. Exercises that are too easy — simple heel raises when the tendon actually needs high-energy loading — will produce slow, incomplete recovery and leave the patient vulnerable to re-injury when they return to sport.
The type of exercise matters as much as the intensity. We progress through isometric holds (which provide pain relief and initial stimulation), to isotonic eccentric and concentric loading, to higher-energy plyometric and sport-specific movements. The rate of progression is determined by how the tendon responds — assessed at each review appointment — not by a fixed timeline.
For mid-portion injuries, eccentric loading (the lowering phase of calf exercises) is particularly effective at stimulating tendon repair. For insertional injuries, full eccentric loading — dropping the heel below the step — compresses the tendon against the heel bone and can aggravate the injury. The strengthening program for insertional Achilles tendonitis is specifically modified to avoid this compression while still driving repair. Where anterior knee pain is also present, the strengthening program is coordinated to address both conditions without overloading either.
Insertional Achilles Tendonitis — Rehabilitation Videos
Achilles Tenosynovitis — A Different Condition
Tenosynovitis refers to inflammation of the sheath (lining) surrounding the Achilles tendon, rather than injury to the tendon fibres themselves. In isolated tenosynovitis, the tendon fibres are intact and the tendon retains full power — the sheath has simply become inflamed from very high volumes of repetitive movement, or in some cases from footwear rubbing directly against the tendon lining (high-cut hiking boots, work boots, or the heel cup of kicking sport boots in rare cases).
The clinical giveaway is significant swelling and pain, but preserved tendon strength on load testing. With complete rest, the swelling and pain can subside rapidly — much faster than tendon fibre injury.
Tenosynovitis frequently occurs alongside tendonitis, where the tendon lining becomes inflamed as a result of the underlying tendon injury. This combination requires careful management: the high repetition loading used to stimulate tendon repair will rub and irritate the inflamed sheath, making it worse. In these cases we use isometric-style exercises — static holds that load the tendon without movement — to strengthen the Achilles without aggravating the sheath. Return to running is managed with short, sharp bursts rather than long slow distances, which create more sheath friction.
Case Study: The Touch Football Player Who Kept Re-Injuring
A middle-aged touch football player presented after several months of recurring Achilles pain. The pattern was consistent: heel pain after a game, a week or two of rest with no pain, return to football, immediate worsening.
What was happening was straightforward once the injury was properly assessed. The initial injury had left the tendon at roughly 80% of its normal strength. Day-to-day office work and light activity only required 50–60% of tendon capacity — well within the tendon's current ability — so the patient felt completely pain-free and assumed they had recovered. But touch football requires 100% capacity with sprinting and cutting. Each return to football pushed well above the tendon's actual strength, causing further fibre damage. After several cycles of this, the tendon had weakened to the point where even walking to work caused pain.
We assessed and graded the injury, explained what activities were safe at each stage, and built a progressive strengthening program starting with isometric loading and advancing through isotonic and plyometric exercises over several weeks. At each review we assessed tendon strength and adjusted the program accordingly. As the tendon progressed from significantly weakened back toward full strength, sport-specific loading was reintroduced — first jogging, then running, then cutting and sprinting. The patient returned to touch football at full capacity without recurrence.
The key was understanding that pain-free at rest does not mean recovered — and that the tendon needed to be specifically strengthened back to the demands of the sport, not just rested until it stopped hurting.
Frequently Asked Questions
Why does my Achilles feel fine during the day but hurt when I run?
Day-to-day walking and office work typically require only 50–60% of your Achilles tendon's capacity. If your tendon has been injured and is currently at, say, 75% strength, you will be completely pain-free with normal activity — but running and sprinting, which demand close to 100%, will exceed the tendon's current capacity and cause pain or further injury. Feeling pain-free at rest does not mean the tendon has recovered. It means the tendon is strong enough for low-load activity, but not yet ready for sport.
Why didn't rest fix my Achilles?
Rest reduces pain by keeping activity below the tendon's current capacity, but it does not stimulate the tendon to repair and strengthen. In fact, prolonged rest causes tendons to down-regulate — they become thinner and weaker over weeks without load. Returning to sport after a long rest period often results in re-injury because the tendon is actually weaker than before the rest began. Repair requires specific, progressive loading — not absence of load.
What is the difference between mid-portion and insertional Achilles tendonitis?
Mid-portion Achilles tendonitis involves injury to the tendon fibres in the middle section of the Achilles, above the heel bone. Insertional Achilles tendonitis involves injury where the tendon attaches to the back of the heel bone. The location matters clinically because the treatment — particularly the strengthening program — differs between the two. Full eccentric loading (dropping the heel below a step) is effective for mid-portion injury but compresses the tendon against the heel bone in insertional cases and can worsen symptoms. Getting the diagnosis right determines the correct rehabilitation approach.
Do I need a scan for my Achilles?
In most cases, no. We can accurately diagnose the type, location, and severity of Achilles injury through clinical assessment and systematic load testing without imaging. Imaging is used when the injury is not responding as expected, when we suspect a co-existing injury (such as a heel bone stress reaction), or when a partial or complete rupture needs to be confirmed. For straightforward presentations, imaging adds cost and delay without changing the treatment plan.
Can I keep running with Achilles tendonitis?
It depends on the severity of the injury and the type of running. A mildly injured tendon that retains most of its strength can often continue with modified training — reduced volume, lower intensity, avoiding hills and speed work. A significantly injured tendon may need a period of protection from running while strengthening is established. The goal is always to keep you as active as possible within safe limits, not to stop all activity. We assess each patient individually and build a plan around their specific sport and training demands.
How long does Achilles tendonitis take to heal?
With accurate diagnosis and a well-managed strengthening program, mild to moderate Achilles tendonitis typically responds within 6–12 weeks. More severe or long-standing injuries take longer — particularly when the tendon has been repeatedly re-injured through cycles of rest and premature return to sport. The single biggest factor in recovery time is how quickly the correct diagnosis is made and the right rehabilitation started. Patients who have spent months resting and returning without a structured program often take significantly longer to recover than those who start appropriate treatment early.
Related Conditions
Achilles tendon injuries frequently occur alongside or are confused with other lower limb conditions. If you're not sure this is your issue, these pages may help:
- Plantar Fasciitis — pain under the heel and arch, often presenting alongside insertional Achilles tendonitis
- Shin Splints — overload of the muscles and bone of the lower leg, often triggered by the same training errors as Achilles injury
- Calf & Soleus Strains — muscle tears or overuse in the calf complex that feeds directly into Achilles load
- Stress Reactions & Stress Fractures — bone stress in the heel or lower leg that can co-exist with or be mistaken for Achilles tendonitis
- Knee Pain — altered gait from Achilles injury commonly shifts load into the knee
- Prescription Orthotics — how custom orthotics are used to offload the Achilles and address underlying foot mechanics
Our Bardon clinic is located at 148 Boundary Rd, Bardon, and serves runners, athletes and active people from Paddington, Ashgrove, Toowong, Red Hill, The Gap and across Brisbane's inner west. If you're dealing with Achilles pain, book in for an assessment — the sooner the injury is properly graded and loaded, the faster the recovery.