The methods include posterior ring internalfixation by using sacral bars, four-hole square plates or cancellous screwswith anterior ring fixed by plates.
固定方法有：前环骨折采用钢板固定；后环骨折分离采用骶骨棒，四孔方形钢板，松质骨螺钉固定。
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CONCLUSION: Bioabsorbable PDLLA plates and screws can be selectively used for internalfixation in single linear mandibular fractures, with the advantage that they do not need to be removed.
Methods 55 patients with patellar transverse fractures which are all close and fresh underwent internalfixationwith two parallel absorbable screws, tension bands and absorbable sutures.