Evaluation of a one-stage ACL revision technique using bone void filler after cyclic loading

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering
• Sports Medicine

Background:

• Anterior cruciate ligament (ACL) reconstruction revisions often necessitate a two-stage surgical approach.
• This study investigates a novel one-stage ACL revision technique utilizing calcium phosphate bone cement.

Purpose of the Study:

• To evaluate the biomechanical properties of a one-stage ACL revision technique.
• To compare the cyclic loading performance of a calcium phosphate bone cement-filled revision against standard ACL reconstruction.

Main Methods:

• Five pairs of matched cadaveric knees underwent arthroscopic ACL reconstruction.
• The experimental group received a revision with calcium phosphate bone cement in a prepared defect, while the control group had standard reconstruction.
• Specimens were subjected to cyclic loading and load-to-failure testing to assess ultimate load, stiffness, and failure modes.

Main Results:

• All specimens successfully completed mechanical testing.
• No statistically significant differences were observed in maximum load or stiffness between the control and experimental groups.
• Bone mineral density did not correlate with maximum load in the tested specimens.

Conclusions:

• The one-stage ACL revision technique using calcium phosphate bone cement demonstrates biomechanical viability.
• Further long-term animal studies and human clinical trials are recommended for clinical acceptance.