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The calcaneal stress fracture squeeze test is a manual compression maneuver performed by a clinician to assess whether sharp pain along the sides of the heel indicates a calcaneal stress fracture rather than plantar fasciitis or bursitis.
Test Procedure
The patient lies prone with the knees flexed to allow clear access to both heels. The examiner then applies pressure using the palms to compress the medial and lateral surfaces of the heel fat pad in three directions: the back, the sides, and the middle. Side compression that produces sharp pain raises suspicion for a calcaneal stress fracture, while central tenderness more often points to plantar fasciitis. The entire maneuver takes only seconds and requires no equipment.
Interpreting Positive and Negative Results
A positive result occurs when squeezing the sides elicits sharp pain localized to the calcaneus, suggesting a possible stress fracture. Pain felt primarily in the central fat pad during middle compression instead supports a diagnosis of plantar fasciitis. Retrocalcaneal bursitis may produce discomfort when pressure is applied to the back of the heel. Superior border calcaneal stress fractures can yield negative squeeze test findings, so absence of pain does not fully exclude injury. Clinicians combine these location-specific responses with the patient history of pain that worsens with prolonged standing and improves after rest.
Limitations of Early Imaging
Plain radiographs frequently appear normal in the first weeks after symptom onset because calcaneal stress fractures often remain invisible until three to four weeks have passed. This delay means the squeeze test serves as an immediate bedside tool before radiographic changes appear. When symptoms persist beyond that window without clear X-ray findings, MRI, bone scan, or CT imaging provides greater sensitivity for confirming the diagnosis. Advanced imaging is not always required if conservative management will not change based on the result.
Differentiating from Plantar Fasciitis
Plantar fasciitis typically presents with inferior heel pain that is worst with the first morning steps and tenderness concentrated at the anteromedial calcaneal tubercle. In contrast, the squeeze test isolates lateral or medial heel pain that is more characteristic of a stress fracture. Both conditions can cause activity-related discomfort, yet the test helps narrow the differential before ordering further studies. Risk factors such as prolonged weight bearing, hard surfaces, and reduced bone density increase the likelihood of fracture over fasciitis alone.
Considerations in Children and Other Conditions
In active children and adolescents, heel pain may stem from Sever disease, an inflammation of the calcaneal apophysis that can mimic fracture on imaging if the growth plate is misread. The squeeze test remains useful but must be interpreted alongside age and activity level. Haglund deformity produces posterior lateral heel pain and visible bony prominence on lateral radiographs, distinguishable from fracture by location and appearance. Achilles tendon involvement may require MRI for separation from calcaneal bone injury.
When Further Evaluation Is Warranted
Patients who cannot bear weight, experience extreme tenderness to touch, or show no improvement after several weeks of rest should receive professional assessment rather than attempting self-compression. Untrained pressure risks aggravating the area without yielding reliable information. Persistent symptoms lasting months justify advanced imaging to guide activity modification and rule out other bony lesions.
Further reading is available from Heel Pain, Plantar Fasciitis, What is the Fat Pad Squeeze Test?, and Delayed Diagnosis of Calcaneal Stress Fracture: A Case Report.
