Quick Summary
A stress fracture is a small crack in a bone caused by repetitive impact that outpaces the bone's ability to repair itself — one of the most common overuse injuries in runners, dancers and anyone who has recently increased their training. The foot accounts for around a third of all stress fractures, with the second and third metatarsals the most frequently affected bones. Our HCPC-registered physiotherapists help you offload the injured bone, protect healing, and rebuild strength through a carefully staged return to loading, with most low-risk injuries settling over 6–12 weeks.
What Is a Stress Fracture?
A stress fracture is the end point of a continuum known as a bone stress injury. Bone is living tissue that constantly remodels itself — old, microdamaged bone is removed and new bone is laid down in its place. When repetitive loading accumulates faster than the bone can repair, microdamage builds up, producing first a stress reaction (swelling within the bone without a crack) and, if loading continues, a stress fracture (a true crack in the outer shell of the bone).
High-risk and low-risk sites
Stress fractures of the foot and ankle are grouped into high-risk and low-risk sites, and this grouping drives how they are managed. High-risk sites have a poorer blood supply and sit on the tension side of loading, so they are more prone to slow healing — these include the tarsal navicular, the base of the fifth metatarsal, the front surface of the shin bone, the inner ankle bone, the talus and the sesamoids under the big toe. Low-risk sites, such as the second, third and fourth metatarsal shafts, the outer ankle bone and the heel bone, generally heal well with activity modification (Mallee et al., British Journal of Sports Medicine, 2015).
Healing and return to activity
Low-risk metatarsal stress fractures typically need around 6–8 weeks of protected weightbearing, while high-risk navicular or fifth-metatarsal base injuries may need 8–12 weeks or longer, sometimes with a period of non-weightbearing or surgical input. Return to activity is staged rather than sudden: bony tenderness must settle and walking must be comfortable before a graduated walk-run progression begins, with your symptoms guiding each step (Warden et al., JOSPT, 2014; Green et al., Sports Medicine, 2024).
Ordinary X-rays often look normal in the early weeks, so where a high-risk site is suspected or the picture is unclear, an MRI scan or specialist referral may be recommended.
Do You Experience These Symptoms?
✓ A gradually worsening, localised ache in your foot or ankle that builds over days or weeks rather than starting suddenly
✓ Pain that increases with weightbearing activity such as running, jumping or walking, and eases with rest
✓ A pinpoint of tenderness when you press directly over the affected bone
✓ Swelling on the top of your foot or around your ankle
✓ Pain that starts earlier in your activity as the injury progresses
✓ In more advanced cases, pain during ordinary standing or walking, sometimes causing a limp
✓ Occasionally night ache or pain at rest, which is a warning sign that needs prompt review
These symptoms can be treated.
The sooner you begin, the better your chances of a smoother recovery.
What Causes a Stress Fracture?
• Training load error and rapid increases in volume
Stress fractures are fundamentally a problem of doing too much, too soon, without giving the bone enough recovery time between repetitive loading sessions.
A sudden jump in running mileage, intensity, hill work or a new sport is the most common trigger, which is why gradual progression matters so much.
• Footwear and training surface
Worn-out or inappropriate footwear reduces shock absorption and shifts load onto the bone, while hard or uneven surfaces increase repetitive impact.
Abrupt changes — such as moving to minimalist shoes or shifting your training onto concrete — can concentrate stress on one bone before it has had time to adapt.
• Biomechanics, foot type and gait
A high-arched or flat foot, a leg-length difference, reduced calf strength or altered running mechanics all change how forces travel through your foot.
These patterns can repeatedly overload one particular site, such as the navicular or a metatarsal shaft.
• Bone health, nutrition and hormonal factors
Low energy availability relative to training demands, known as RED-S, impairs bone health and is a leading risk factor for bone stress injury (Mountjoy et al., British Journal of Sports Medicine, 2018).
Low vitamin D and calcium intake, menstrual disturbance and reduced bone density all raise risk — a large randomised trial in female Navy recruits found calcium and vitamin D supplementation was associated with a 20% lower stress fracture rate (Lappe et al., Journal of Bone and Mineral Research, 2008).
• Returning too soon, or a previous stress fracture
A previous stress fracture is one of the strongest predictors of another one, and returning to full loading before the bone has healed often causes recurrence.
Rushing the rehabilitation timeline is a common and largely avoidable cause of setbacks.
How We Treat Stress Fractures at J&J Therapy
Hands-On Manual Therapy
Hands-on treatment to support the surrounding structures while your bone heals.
Our physiotherapists use gentle soft-tissue work and joint mobilisation of the foot, ankle and calf to ease the compensatory stiffness and muscle tension that build up during offloading.
We work around the injured bone, never over it, and always within your comfort.
Shockwave Therapy*
Swiss Storz Medical MASTERPULS
is not a first-line treatment for an acute stress fracture, and we do not apply it over a fresh fracture site.
Research supporting shockwave for bone healing largely involves focused, higher-energy devices used for slow-healing fractures under medical and imaging oversight, and evidence for radial shockwave in stress fractures specifically remains limited.
Where an associated soft-tissue overload problem is present, it may be considered following assessment.
Targeted Exercise Programme
A staged loading programme built around your specific injury site.
We begin with protected weightbearing and pain-free cross-training such as pool running, cycling or swimming to maintain your fitness, then progressively reintroduce load as bony tenderness settles.
From there we rebuild calf, intrinsic foot, hip and gluteal strength, address your walking or running mechanics, and guide an individualised walk-run progression with load monitoring to reduce the risk of recurrence.
When to Seek Urgent Medical Help
While most symptoms are not serious, urgent medical attention is required if you experience any of the following:
Pain over the top of the midfoot, the outer base of the little-toe bone, the front of the shin, the inner ankle bone, or referred pain in the groin or hip — these are high-risk sites needing prompt assessment
Sudden inability to bear weight, a sharp increase in pain, or an audible crack, which may indicate the fracture has progressed
Pain that wakes you at night or is present at rest, or any fever, redness and warmth around the area
Recurrent stress fractures, absent or irregular periods, or significant dietary restriction, which need medical review for underlying bone health
FAQs About Stress Fractures
How long does a foot stress fracture take to heal?
Most low-risk stress fractures, such as those in the second, third or fourth metatarsals, heal with around 6–8 weeks of protected weightbearing followed by a gradual return to activity. High-risk fractures — including the navicular and the base of the fifth metatarsal — can take 8–12 weeks or longer and sometimes need a period of non-weightbearing or surgical input. Your timeline depends on which bone is involved and how early the injury was identified.
Do I need a scan to diagnose a stress fracture?
Not always, as many stress fractures are diagnosed clinically from your history and examination. However, ordinary X-rays often appear normal in the first few weeks, so if a high-risk site is suspected or the diagnosis is unclear, an MRI scan or referral for specialist assessment may be recommended. We will advise you if we think imaging is needed and can liaise with your GP.
Can I keep training while it heals?
You will need to stop the activity that caused it, but you usually do not need to stop everything. We help you maintain your fitness with pain-free, low-impact cross-training such as pool running, cycling or swimming, and then guide a staged return to impact once the bone has settled and walking is comfortable.
Can shockwave therapy heal my stress fracture?
Not as a first-line treatment, and not in the early, acute stage. Most of the research supporting shockwave for bone healing uses focused, higher-energy devices for fractures that have failed to heal, under medical supervision and imaging. Our Swiss Storz Medical MASTERPULS is a radial device, and the evidence for radial shockwave in stress fractures specifically is limited, so we would only consider it after careful assessment — usually for a related soft-tissue problem — and often alongside your doctor.
How can I stop it happening again?
Recurrence is common when the underlying cause goes unaddressed, so prevention is a core part of your programme. We review your training load and progression, your footwear and surfaces, your biomechanics, and your bone health and nutrition, including whether low energy availability, low vitamin D or calcium, or menstrual changes may be contributing.
This page is for general information only and does not replace professional medical advice.
Reviewed by Lavya Arigalayan, MSc, HCPC Registered Physiotherapist.
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