## Overview Curb chain trauma is injury to the chin groove or adjacent soft tissues from an improperly fitted, overly tight, or harshly used curb chain. Lesions range from superficial abrasions and hair loss to deep ulceration. Chronic pressure can produce thickening or depigmentation. ## Causes Excessive tension, rough or twisted chain, or poor adjustment that allows the chain to rise out of the chin groove. ## Diagnosis Visual inspection of the chin groove after removing the bridle reveals abrasions, ulcers, or scarring. ## Treatment Remove the offending chain, keep the area clean, and allow healing. Most lesions resolve in one to two weeks. Address bit and curb adjustment to prevent recurrence. ## Recovery and Prognosis Excellent once pressure is eliminated. ## Prevention Correct curb chain fit (flat in the groove, activated only when needed) and smooth materials.
abrasions or ulcers in the chin groove; hair loss; sensitivity when the curb is applied; scarring in chronic cases
## Overview Curb chain trauma is injury to the chin groove or adjacent soft tissues from an improperly fitted, overly tight, or harshly used curb chain. Lesions range from superficial abrasions and hair loss to deep ulceration. Chronic pressure can produce thickening or depigmentation. ## Causes Excessive tension, rough or twisted chain, or poor adjustment that allows the chain to rise out of the chin groove. ## Diagnosis Visual inspection of the chin groove after removing the bridle reveals abrasions, ulcers, or scarring. ## Treatment Remove the offending chain, keep the area clean, and allow healing. Most lesions resolve in one to two weeks. Address bit and curb adjustment to prevent recurrence. ## Recovery and Prognosis Excellent once pressure is eliminated. ## Prevention Correct curb chain fit (flat in the groove, activated only when needed) and smooth materials.
abrasions or ulcers in the chin groove; hair loss; sensitivity when the curb is applied; scarring in chronic cases