A fall detection method for detecting the fall of a wear element from among a plurality of wear elements of an earth moving machine, wherein each wear element is provided with a three-axis accelerometer; characterized in that at least one reference axis is selected, and said method comprises the following steps when said earth moving machine is in an operative state: a) for each of said wear elements, obtaining an accelerometer measurement of said wear element provided by said three-axis accelerometer of said wear element; for each of said at least one reference axis: b) for each of said wear elements, determining a rotational position measurement with respect to said reference axis of said wear element based on said accelerometer measurement of said wear element; c) determining a mean reference value based on said rotational position measurements of each of said wear elements; d) for each of said wear elements, determining a deviation value of said wear element based on the deviation between said rotational position measurement of said wear element with respect to said mean reference value; e) for each of said wear elements, determining that there is a fall of said wear element if said deviation value of said wear element exceeds a threshold value; and f) repeating steps (a) to (e) in successive iterations. characterized in that at least one reference axis is selected, and said method comprises the following steps when said earth moving machine is in an operative state: a) for each of said wear elements, obtaining an accelerometer measurement of said wear element provided by said three-axis accelerometer of said wear element; a) for each of said wear elements, obtaining an accelerometer measurement of said wear element provided by said three-axis accelerometer of said wear element; for each of said at least one reference axis: b) for each of said wear elements, determining a rotational position measurement with respect to said reference axis of said wear element based on said accelerometer measurement of said wear element; c) determining a mean reference value based on said rotational position measurements of each of said wear elements; d) for each of said wear elements, determining a deviation value of said wear element based on the deviation between said rotational position measurement of said wear element with respect to said mean reference value; e) for each of said wear elements, determining that there is a fall of said wear element if said deviation value of said wear element exceeds a threshold value; and f) repeating steps (a) to (e) in successive iterations. b) for each of said wear elements, determining a rotational position measurement with respect to said reference axis of said wear element based on said accelerometer measurement of said wear element; c) determining a mean reference value based on said rotational position measurements of each of said wear elements; d) for each of said wear elements, determining a deviation value of said wear element based on the deviation between said rotational position measurement of said wear element with respect to said mean reference value; e) for each of said wear elements, determining that there is a fall of said wear element if said deviation value of said wear element exceeds a threshold value; and f) repeating steps (a) to (e) in successive iterations.