Objective
To evaluate the effectiveness of nonsurgical treatment and to evaluate the usefulness of ultrasonographic assessment in postburn hypertrophic scar.

Methods
The subjects were twenty-seven burn patients with hypertrophic scar. Hypertrophic scars were treated by four different methods: triamcinolone acetonide injection (Group I), pressure garment application (Group II), combination treatment of triamcinolone acetonide and garment (Group III) and no treatment (Group IV). To assess the effectiveness of each treatment method, ultrasonographic measurement of scar thickness and punch biopsy of scar were done before and after treatment.

Results
After 4 weeks treatment, the scar thickness decreased by 14.9⁑9.4% in Group I, 4.7⁑8.4% in Group II and 20.5⁑13.2% in Group III. However the scar thickness increased by 10.0⁑13.5% in Group IV (no treatment). The pathologic findings didn't show significant change.

Conclusion
The TA solution injection therapy and pressure garment therapy were effective methods for the treatment of the postburn hypertrophic scar, but the combinations of both therapies was more effective than each single therapy. The ultrasonography can be used as objective measure to assess effectiveness of therapy.