Microfracture is one of the most frequently used cartilage repair techniques. According to a comparative study performed at the Hospital for Special Surgery in collaboration with Cornell University, researchers found that smaller diameter instruments (Nanofracture®) showed the best prospects of accessing repair cells and were substantially less damaging to the underlying bone when compared to traditional microfracture or k-wire instruments.
The authors noted that bone marrow stimulation techniques using instruments with larger diameters resulted in increased bone compaction and sclerosis surrounding the defect. K-Wire and microfracture techniques resulted in less open communicating bone marrow channels denoting a reduction in marrow access. Larger diameter devices resulted in greater micro-architecture disturbances than the thinner nanofracture procedure. Based on these findings, the authors concluded that the choice of cartilage repair technique should be carefully considered. Read the Abstract Here.
Gianakos AL, Yasui Y, Fraser EJ, Ross KA, Prado MP, Fortier LA, Kennedy JG.
The Effect of Different Bone Marrow Stimulation Techniques on Human Talar
Subchondral Bone: A Micro-Computed Tomography Evaluation. Arthroscopy. 2016 May
- pii: S0749-8063(16)00269-3. doi: 10.1016/j.arthro.2016.03.028. (Epub ahead of print) PubMed PMID: 27234650