Hydrogel dressings are most suitable for wounds with exposed bone or tendon because they provide moisture to dry wounds, promoting autolytic debridement and aiding in the preservation of delicate tissues. They help prevent desiccation and necrosis of exposed structures, which is critical for wound healing in these cases. Unlike foam or hydrocolloid dressings, hydrogels do not adhere to the wound bed, minimizing trauma on dressing changes over sensitive areas. This maintains an optimal healing environment and reduces risk of further injury. Gauze dressings lack the moisture-retentive properties essential for exposed tendon or bone management.

Reference: Wong's Essentials of Surgical Nursing, 10th Edition.