76 The Effect of Splinting of Metacarpophalangeal Joints After Skin Grafting: A Review of the ACT Database
Abstract Introduction Hands are the most common area of the body to sustain a burn injury. Maintaining motion and function throughout the healing process of a burn injury is one of the most important goals of the rehabilitation process. After a deep burn to the dorsal aspect of the hand requiring skin grafting, the adjacent metacarpophalangeal (MCP) joints are at risk for developing a burn scar contracture (BSC), limiting the joints’ ability to fully flex towards a fist position. Post-operative positioning protocols state that patient’s hand should be temporarily immobilized for graft protection. A resting hand splint is used to maintain the wrist in approximately 20–30 degrees of extension, MCP joints at approximately 50–70 degrees of flexion and the interphalangeal joints in full extension. The purpose of this study was to assess the benefit of splinting as a treatment intervention to prevent MCP joint extension contractures following dorsal hand skin grafting. Methods This was a retrospective review of prospectively collected observational data from the “Burn Patient Acuity Demographics, Scar Contractures and Rehabilitation Treatment Time Related to Patient Outcomes” (ACT) study. Patients were included with grafted dorsal hand burns occurring within 1 of the 4 established cutaneous functional units (CFU) along the dorsal aspect of the second through fifth metacarpals. Since most subjects had more than one dorsal hand CFU involved, the number of CFUs were analyzed as opposed to the number of subjects. Isolated MCP joint flexion measurements were utilized to determine incidence of contracture. Included causes of contracture were scar tissue or other soft tissue limitations. Data were then analyzed by two groups: contracted and non-contracted. Results A total of 221 dorsal hand CFUs were included in this study; 119 contracted and 102 non-contracted. There was no statistical significant difference between the average splint wear time between the 2 groups. The average percent of affected CFUs grafted within the contracted group was 92.4% compared to 76.8% in the non-contracted group. In burns to the dorsal hand with less than 99% of the CFU grafted, splinting was effective in preventing 60% of MCP joint extension contractures. When greater than 99% of affected CFU was grafted, splinting was effective in prevention only 36% of contractures. Conclusions Splinting can be an effective intervention option in preventing MCP extension contractures when less than 75% of the affected CFU has been grafted; however, its effectiveness decreases as the percentage of CFU involvement increases to greater than or equal to 99%. Applicability of Research to Practice Determine most effective post-operative rehabilitations plan following dorsal hand skin grafts.