What Causes Pain in the Big Toe Joint During Bending and Stretching?

Joint pain in the big toe—particularly during flexion and extension—is a common clinical complaint that often points to underlying structural or inflammatory conditions affecting the first metatarsophalangeal (MTP) joint. This joint, where the proximal phalanx of the hallux articulates with the head of the first metatarsal, bears significant mechanical stress during gait, making it vulnerable to degeneration, malalignment, and overuse injuries.

One of the most frequent causes is hallux rigidus—a progressive degenerative arthrosis characterized by cartilage loss, osteophyte formation, and reduced dorsiflexion. Patients typically report deep, aching pain exacerbated by weight-bearing activities such as walking uphill or wearing stiff-soled shoes. Stiffness, especially in the morning or after rest, and crepitus on movement are also hallmark features.

Gouty arthritis must be considered in acute or recurrent episodes of severe, sudden-onset pain, swelling, erythema, and warmth localized to the MTP joint. Hyperuricemia leads to monosodium urate crystal deposition in the joint space and periarticular tissues, triggering intense neutrophil-mediated inflammation. A history of similar attacks, dietary triggers (e.g., red meat, alcohol), or comorbidities like hypertension or chronic kidney disease increases suspicion.

Other potential etiologies include sesamoiditis—irritation or microfracture of the tibial or fibular sesamoids beneath the first metatarsal head—often seen in dancers, runners, or individuals with high-arched feet. Inflammatory arthritides such as rheumatoid arthritis or psoriatic arthritis may also involve the first MTP joint, typically presenting with symmetric or asymmetric synovitis, prolonged morning stiffness (>30 minutes), and systemic features.

Less common but clinically important considerations include turf toe (a sprain of the plantar capsule and ligaments due to forced hyperextension), Freiberg’s infraction (osteochondrosis of the second metatarsal head, though occasionally involving the first), or post-traumatic osteoarthritis following prior fracture or dislocation. Accurate diagnosis requires a detailed history, physical examination—including assessment of range of motion, joint stability, and provocative maneuvers—and targeted imaging, such as weight-bearing radiographs or MRI when soft-tissue pathology is suspected.