In the subacute stage, what is the maximum recommended intensity for ultrasound use?

In the subacute stage of healing, tissues are still vulnerable and sensitive following injury. Appropriate ultrasound intensity is crucial for promoting healing while avoiding unnecessary stress or damage to the tissue.

The maximum recommended intensity of 1.0 W/cm² for ultrasound during this stage is ideal, as it strikes a balance between providing effective thermal and non-thermal effects without exceeding the threshold that could potentially cause trauma to the recovering tissue. This intensity allows for sufficient penetration and stimulation of cellular activity, which can help in reducing inflammation and facilitating tissue repair.

Using lower intensities such as 0.5 W/cm² may not provide adequate therapeutic effects in this stage, while higher intensities over 1.0 W/cm² risk overheating or damaging sensitive regions that are still in the process of healing. Thus, the recommended maximum of 1.0 W/cm² aligns well with the physiological needs of tissues in the subacute stage.