Freiberg’s disease (often called Freiberg infraction) is an osteochondrosis/osteonecrosis-like disorder affecting the metatarsal head—most commonly the second metatarsal. It involves subchondral bone injury and collapse with secondary degeneration of the metatarsophalangeal (MTP) joint surface. Clinically it presents as forefoot pain localised to the affected MTP joint, often with swelling and stiffness.
Who gets it and why
Freiberg’s disease is classically described in adolescents and young adults, with a higher reported prevalence in females, though it can occur at any age. It is frequently associated with:
- Repetitive loading of the metatarsal head (sport, dancing, running, occupational standing)
- Long second metatarsal or metatarsal length pattern that increases focal pressure
- Limited ankle dorsiflexion or forefoot loading patterns that shift pressure distally
- Trauma (acute or microtrauma) as a trigger
- Possible contributions from vascular vulnerability of the metatarsal head
The most accepted model is multifactorial: repetitive stress causes subchondral microfracture and impaired healing, leading to collapse of the articular surface and progressive joint degeneration.
Pathophysiology: what’s happening in the joint
The metatarsal head is a small, highly loaded structure. When stress exceeds the bone’s capacity to remodel, a subchondral fracture can occur. This disrupts the supporting “scaffold” beneath the cartilage. Even if the cartilage initially remains intact, loss of subchondral support can lead to:
- Flattening of the metatarsal head
- Dorsal collapse and fragmentation
- Articular incongruity at the MTP joint
- Secondary synovitis, stiffness, and osteoarthritic change
Over time, the plantar portion of the metatarsal head may remain relatively preserved while the dorsal surface collapses—important for understanding why some surgical procedures focus on rotating intact plantar cartilage dorsally.
Symptoms and clinical presentation
Patients typically report:
- Pain at the affected MTP joint, often described as “walking on a stone”
- Pain worsened by push-off, running, or forefoot loading
- Swelling and tenderness over the metatarsal head
- Reduced MTP joint dorsiflexion and a feeling of stiffness
- Sometimes a visible dorsal prominence or toe deviation in later stages
On examination of Freiberg’s disease, you may find focal joint line tenderness, pain with end-range dorsiflexion/plantarflexion, and a positive “grind” test (pain/crepitus with axial load and rotation), particularly in more advanced disease.
Differential diagnosis
Forefoot pain at an MTP joint has a broad differential. Consider:
- MTP synovitis/capsulitis (mechanical overload)
- Stress fracture of the metatarsal shaft/neck
- Plantar plate injury
- Morton’s neuroma (interdigital pain/paraesthesia)
- Inflammatory arthropathy (e.g., rheumatoid arthritis)
- Osteochondral lesion or degenerative osteoarthritis
- Infection (rare, but important if systemic signs)
A careful history, localisation of pain, and imaging help separate these.
Imaging and staging
Plain radiographs are usually the first-line imaging. Early disease may show subtle changes; later stages show flattening, sclerosis, fragmentation, and joint space narrowing.
A commonly used radiographic classification is the Smillie staging system:
- Fissure fracture in subchondral bone (often radiographically subtle)
- Early collapse of the dorsal articular surface
- Depression and fragmentation of the metatarsal head
- Loose bodies and marked articular incongruity
- End-stage arthrosis with flattening and joint degeneration
MRI can detect early marrow oedema, subchondral fracture, and cartilage involvement when X-rays are normal or equivocal. It is particularly useful when symptoms are significant but radiographs are unrevealing.
Management: principles and conservative care
Treatment of Freiberg’s disease depends on stage, symptom severity, activity demands, and patient goals. In earlier stages, non-operative management is often effective.
Key conservative strategies include:
- Activity modification: reduce running/jumping and forefoot loading
- Footwear changes: stiff-soled shoes, rocker soles, wider toe box
- Offloading orthoses: metatarsal pads/bars, custom insoles to reduce pressure under the involved metatarsal head
- Immobilisation: a walking boot or stiff-soled shoe for a period in more painful cases
- Anti-inflammatory measures: short courses of NSAIDs if appropriate, icing, and load management
- Rehabilitation: calf flexibility (if limited dorsiflexion), intrinsic foot strength, graded return to activity
The goal is to reduce joint stress enough to allow symptoms to settle and to limit progression of collapse.
When surgery is considered
Surgery is typically considered when:
- Pain persists despite adequate conservative care
- There is mechanical joint incongruity causing catching/locking
- Disease is more advanced with structural collapse
- The patient’s function and activity goals are significantly limited
Surgical options for Freiberg’s disease vary by stage and surgeon preference. Broad categories include:
- Debridement and loose body removal (often arthroscopic or open) for mechanical symptoms
- Dorsal closing wedge osteotomy (Gauthier-type) to rotate plantar, healthier cartilage dorsally and decompress the joint
- Metatarsal shortening osteotomy to reduce load and improve joint mechanics
- Osteochondral procedures (selected cases) to address focal defects
- Interpositional arthroplasty or implant arthroplasty in later stages
- Resection arthroplasty or salvage procedures for end-stage arthrosis (chosen carefully given risks of transfer metatarsalgia and toe instability)
No single procedure is ideal for all patients; matching procedure to stage and joint surface condition is critical.
Prognosis and practical considerations
Prognosis of Freiberg’s disease is generally better when the condition is identified early and offloading is implemented promptly. Later-stage disease may progress to degenerative arthritis of the MTP joint, with chronic pain and stiffness.
Practical points for clinicians and patients:
- Localise pain precisely to the MTP joint and confirm with imaging.
- Early MRI can be valuable when X-rays are normal but suspicion remains.
- Offloading and footwear changes are not “optional extras”—they are core treatment.
- Expect a gradual return to sport; rushing load can flare symptoms.
- Monitor for transfer metatarsalgia when altering load patterns with orthoses or after surgery.
Freiberg’s disease is a stress-related disorder of the metatarsal head—most often the second—leading to subchondral injury, collapse, and secondary joint degeneration. Patients present with focal MTP pain, swelling, and stiffness. Radiographs and MRI guide staging and management. Early-stage disease often responds well to offloading, footwear modification, and load management, while persistent or advanced cases may require surgical intervention aimed at restoring joint congruity, reducing load, and addressing cartilage damage.
