Oblique mandibular parasymphysis fracture treated with cannulated herbert bone screws: case reports

Maxillofacial trauma is in querulous expansion by clinical and biomechanical studies in order to enhance the well-established techniques and to utilize new materials to reduce immobilization period and enhancement of the rigid fixation.²³ The principle of axial compression for better adaptation of fracture segments, with the advantage of increased stability and early function, is a promising means of avoiding the bulky rigid plates used previously.²¹Since 1984 the cannulated Herbert Bone Screw (HBS) proves to be a successful mean of fracture fixation in various fields of orthopaedic surgery, nonetheless with no sufficient evidence about its performance in the maxillofacial trauma field.²³

Purpose of this study was to evaluate clinically and radiographically the performance of Herbert Bone Screw in the treatment of anterior mandibular oblique fractures.

Three Patients with non-comminuted oblique anterior mandibular fracture who had reported to the dept. of OMFS, Institute of Dental Sciences, Siksha ‘o’ Anusandhan University (Deemed to be University) following RTA were treated using Herbert bone screw. Clinical follow up was conducted after one week, four weeks, six weeks and twelve weeks for postoperative occlusion, inter-fragmentary mobility, pain and isodensity values on panoramic radiographs.

By the end of the follow up period, all cases showed normal occlusal and good stability, a decrease in level of pain intensity and an uneventful wound healing with no records of developed infection. Mean bone density after twelve weeks showed a statistically significant.

Fixation of anterior mandible fracture using this technique can achieve good stability and appropriate compression.