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Animal experiment: Radiological analysis of the LPM reattachment1957(15) Murray et al.(16) suggested that the inferior part can be further divided into four zones. They used fine-wire electrodes to measure LPM activity and found a total of 374 single motor units. The superomedial part initiates protrusive and contralateral movements, and the superolateral and inferomedial parts follow through with these movements. The specific function of the inferolateral part has not been determined. The generally accepted hypothesis is that the superior belly has a role in retrusive movements and closing of the jaw, but Murray et al.(16) found this hypothesis to be false. They found that the superior belly also participates in contralateral and protrusive movements. The medial part does not display any additional activity, but the lateral part also activates during retrusion and closure of the mouth. Using EMG-based research, Huang et al.(17) also found that the inferior belly is the principal muscle for laterotrusive movement when the teeth are in contact; the other masticatory muscles have at most a facilitatory role.Fig. 8: Bony connection between lateral pterygoid muscle (LPM) and the implant scaffold. (a) Sheep no. 8087; (b) sheep no. 4249. Red arro bony connection between the LPM and the implant scaffold; black arro partial calcification of the LPM; Blue arro significant calcification of the LPM.To our knowledge, there are only two articles that discuss the reinsertion of the lateral pterygoid muscle when placing a TMJR. Collins et al.(18)attempted to reattach the lateral pterygoid muscle below the point of the condylectomy in 20 joints. They then compared functionality to Nikolas de Meurechy NW.indd 195 05-06-2024 10:14