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Due to the low resonant frequency of the accelerometer attachment on the tibia, recorded impact shock values are prone to error. Besides, spectral analysis of the impact shock can be distorted due to the overlapping of the skin mounted accelerometer attachment response and the frequency response of the impact shock. Despite all this limitations and measurement errors, skin mounting technique is still preferred because of its easiness of using in routine measurement owing to his non-invasive character. Therefore, methods for removing or reducing skin effect have to be found in order to obtain an accurate estimation of the tibial acceleration with skin mounted transducers. We propose a method based on the wavelet shrinkage of the skin mounted signal.