The use of LLLT for wound healing has been shown effective in modulating both local and systemic response. Usually the healing process of the bone is slower than the observed in soft tissues. The natural course of bone healing comprises of consecutive phases and differs according to the type and intensity of the trauma and also the extension of the damage to the bone.
Traumatic injuries are major sources of bone fractures.
Confining civilian or military activities such as petroleum platform work, space trips and submarine work, further difficult the management of skeletal injuries. It is known that the lack of gravity and extremely high pressures may impair even more body's abilities to repair. The effects of LLLT on bone are still controversial as previous reports found elsewhere in the literature show different or conflicting results. Most importantly, recent study has suggested that the threshold parameter energy density and intensity are biologically independent from each other. This independence accounts for the success and the failure of LLLT achieved at low-energy density levels as described previously by Sommer et al.