An Innovative Pubic Symphyseal Plate for the Treatment of Open-Book Injury: A Biomechanical Feasibility Study

Area of Science:

• Orthopedic biomechanics
• Surgical implant technology
• Pelvic trauma research

Background:

• Investigating novel fixation devices for pelvic symphysis injuries.
• Assessing biomechanical stability of a new 6-hole L-shaped plate.
• Comparing novel plate performance against standard pubic symphyseal plates.

Purpose of the Study:

• To evaluate the biomechanical stability of a novel 6-hole L-shaped plate for symphyseal fixation.
• To compare the novel plate's performance against a standard 6-hole pubic symphyseal plate.
• To determine the suitability of the novel plate as an alternative surgical option.

Main Methods:

• Pelvic models simulating APC III injury were used for testing.
• Cyclic biomechanical single-leg-stance tests (30,000 cycles) were performed.
• Load-to-failure tests evaluated ultimate strength and stiffness.

Main Results:

• No significant difference in stiffness between the novel and standard plates (p=0.514).
• The novel plate group showed significantly lower cumulative plastic deformation (p=0.005).
• Both plate constructs demonstrated similar ultimate strength in load-to-failure tests (p=0.804).

Conclusions:

• The novel L-shaped plate offers comparable biomechanical stability to the standard plate.
• The novel plate may be a viable alternative for symphyseal fixation.
• Further clinical research is needed to confirm long-term outcomes and efficacy.