Running Injuries: The Overuse Problems and How to Train Around Them
Most running injuries are not accidents. They are the predictable result of asking tissue to adapt faster than it can, and they follow a small number of recognisable patterns.
The underlying principle
Tissue adapts to load, but slowly. Bone, tendon and fascia remodel over weeks to months, while cardiovascular fitness improves within days. That mismatch is why enthusiastic beginners and returning runners get injured: the lungs are ready long before the tendons are.
Roughly 80 percent of running injuries are training-load errors, not biomechanical flaws.
The common injuries
Medial tibial stress syndrome, shin splints. Diffuse ache along the inner border of the shin, worse at the start of a run, easing then returning. Caused by rapid mileage increase, hard surfaces, worn shoes and weak calves and hips. Treated by reducing load, calf and hip strengthening, and gradual return.
Distinguish from a tibial stress fracture: pain becomes focal, you can point to one spot, it hurts at rest and at night, and hopping on that leg reproduces it. A stress fracture needs rest from impact and medical assessment, and running through it risks a complete fracture.
Patellofemoral pain, runner’s knee. Vague ache around or behind the kneecap, worse on stairs, squatting and after prolonged sitting. Strongly associated with weak hip abductors and quadriceps. Treated with hip and quadriceps strengthening, a slightly higher cadence, and temporary reduction in hills and downhill running.
Iliotibial band syndrome. Sharp pain on the outside of the knee, typically appearing at a consistent distance into every run and worse downhill. Related to hip weakness and running mechanics. Foam rolling the ITB itself is of limited value; strengthening the hip abductors is the treatment.
Achilles tendinopathy. Pain and stiffness in the tendon, worst on the first steps in the morning and at the start of exercise. Treated with progressive loading, specifically heavy slow resistance or eccentric calf raises, not rest. Complete rest weakens the tendon further. Expect three months or more.
Plantar fasciitis. Sharp heel pain with the first steps in the morning and after sitting. Treated with calf and plantar fascia stretching, high-load plantar fascia strengthening, supportive footwear, and sometimes orthoses or night splints. Also slow: three to twelve months.
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Bone stress injuries in the metatarsals, femoral neck and pelvis, especially with low energy availability, menstrual disturbance or low bone density. Femoral neck stress fractures are serious and need prompt assessment.
Hamstring and gluteal tendinopathy, presenting as deep buttock or sit-bone pain, worse with sitting and uphill running.
Load rules that prevent most of this
- Increase weekly mileage by roughly 10 percent at most, and hold steady or drop every fourth week
- Change one variable at a time: distance, speed or surface, not all three
- Follow hard days with easy days. Most recreational runners run their easy runs too fast and their hard runs too slow
- Keep most running easy, at a pace where you can hold a conversation
- Build a base before adding speed work
- Increase cadence slightly if overstriding; around 170 to 180 steps per minute reduces load on the knee for many runners, and a 5 to 10 percent increase is a reasonable experiment
- Replace shoes every 500 to 800 km. Choose comfort over shoe category; the evidence for prescribing shoes by foot type is weak
- Strength train twice a week. Resistance training reduces running injury risk substantially in trials and is the most under-used preventive measure available. Focus on calves, hips, glutes and single-leg work
- Sleep and eat enough. Under-fuelling, relative energy deficiency in sport, causes bone stress injuries, hormonal disruption and poor recovery
- Vary surfaces and avoid always running the same camber
Running through pain
A workable guide:
- Pain under 3 out of 10, not worsening during the run, settled by the next morning: usually acceptable to continue with reduced load
- Pain that increases during the run, alters your gait, or is still present the next day: stop and reduce
- Any focal bone pain, night pain, or pain causing a limp: stop, and get assessed
Cross-training while injured
Maintain fitness with cycling, swimming, deep-water running or the elliptical, chosen so it does not provoke the injured tissue. Keep strength work going. Returning from a layoff should follow a walk-run progression rather than resuming previous mileage.
When to get professional help
Pain lasting more than two weeks despite reduced load, focal bone tenderness, night pain, swelling, numbness or tingling, a joint that gives way or locks, recurring injury in the same place, or any pain that changes how you run. A physiotherapist who treats runners will assess load history and strength rather than only the sore spot.
This is general information. Persistent or focal pain, especially suspected bone stress injury, needs assessment rather than rest-and-hope.