During posterior cervical stabilization, lateral mass fixation with plate-screw has been found to be a simple and safe application, without the dependence on intact posterior element and immediate rigid fixation. We applied the AME Haid Universal Bone Plate System to six cases of traumatic lower cervical instability with favorable results. Drilling direction was 30 degrees lateral and 15-20 degrees rostral to the vertebral plane, and we have not noticed any complication. Screw loosening, the pitfall of the procedure is described.
Bone Plates*

No abstract available.
Bone Plates* ; Spine*

No abstract available.
Bone Plates* ; Tibia*

No abstract available.
Bone Plates ; Mandible ; Odontoma ; Transplants

Bone Plates ; Humans ; Mandibular Fractures ; surgery

This study briefly introduces the revised content of Guidance for Registration of Metallic Bone Plate Internal Fixation System (Revised in 2021) compared to the original guidance, mainly including the principles of dividing registration unit, main performance indicators of standard specification, physical and mechanical performance research, and clinical evaluation. At the same time, in order to provide some references for the registration of metallic bone plate internal fixation system, this study analyzes the main concerns in the review process of these products based on the accumulation of experience combining with the current review requirements.
Bone Plates ; Fracture Fixation, Internal ; Biomechanical Phenomena

Bone Plates ; Bone Screws ; Humans ; Internal Fixators ; Mandible ; surgery

We reported a 23-year-old man who was involved in a high-speed motorcycle accident. He sustained a closed fracture at the right distal femur. The primary fracture happened on February 2008. He underwent open reduction and internal fixation with cloverleaf plate. And one hundred days after the surgery, the proximal screws were pulled-out, but the bone union was not achieved. Treatment consisted of exchanging the cloverleaf plate with a locking compression plate and using an auto-iliac bone graft to fill the nonunion gap. In July 2009, the patient had a sharp pain in the right lower limb. The X-ray revealed that the plate implanted last year was broken, causing a nonunion at the fracture site. Immediately the plate and screws were removed and an intramedullary nail was inserted reversely from the distal femur as well as a 7 cm long bone from the right fibula was extracted and longitudinally split into two pieces to construct cortical bone plates. Then we placed them laterally and medially to fracture site, drilled two holes respectively, and fastened them with suture. We carried on auto-iliac bone grafting with the nonunion bone grafts. The follow-up at 15 months after operation showed that the treatment was successful, X-ray confirmed that there was no rotation and no angular or short deformity. We briefly reviewed the literature regarding such an unusual presentation and discussed in details the possible etiology and the advantages of autologous double-strut fibular grafts to cope with such an intractable situation.
Bone Plates ; Femur ; Fibula ; Fracture Fixation, Internal ; Fractures, Bone ; Humans

This study was performed to evaluate the effect that screw number and length have on the ability of two types of plate to resist vertical masticatory force. Five trials were done with two, four, or six screws, using screws 4 mm, or 12 mm in lenght and mini bone plates or mini compression plates. The fractured ribs were subjected to increasing weights until failure. With the mini bone plate, increasing the number of screws increased the weight resisted than screw length. For the mini compression plate, increasing screw length and the number of screws increased weight resisted.
Bite Force ; Bone Plates ; Mandibular Fractures* ; Ribs ; Weights and Measures

OBJECTIVEThis study aimed to compare the treatment effects of simultaneous surgical treatment and stage operation for patients with craniomaxillofacial fracture combined with other injuries.

METHODSFifty patients with maxillofacial fractures combined with other injuries were chosen and divided into simultaneous (28 patients) and staging (22 patients) operation groups. In simultaneous operation group, maxillofacial fracture reduction, internal fixation, and other parts of the surgery were simultaneously operated by relevant departments jointly. In the staging operation group, maxillofacial fracture reduction and internal fixation were performed after treatment of other injuries. Data on the treatment efficacy and associated injuries of the two groups were statistically analyzed.

RESULTSIn the simultaneous operation group, 26 patients had good occluding relation, the maximum mouth opening was (34.5 +/- 3.7) mm, the symmetry and shape of hard tissues recovered well, and the bone plate of one patient was removed because of internal fixation infection. In the staging operation group, 14 patients had good occluding relation, the maximum mouth opening was (28.5 +/- 3.5) mm, the symmetry and shape of hard tissues poorly recovered, and the bone plates of 5 patients were removed because of internal fixation infection. Statistical significance was determined among occluding relation, maximum mouth opening, postoperative complications, and length of stay of the two groups (P< 0.05). Treatment of the simultaneous operation group was more effective than that of the staging operation group.

CONCLUSIONWhen a patient's condition is relatively stable, simultaneous surgical treatment of multiple specialties should be conducted to treat craniomaxillofacial fracture combined with other injuries.