July 07, 2017
1 min read

Patients with prior microfracture have slightly less clinical improvement after TKA

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Aaron J. Kyrch

Patients with a prior history of microfracture who underwent total knee arthroplasty experienced slightly less clinical improvement compared with patients who did not undergo microfracture surgery, according to results.

Aaron J. Krych, MD, and colleagues matched 21 patients with a prior history of microfracture who underwent total knee arthroplasty (TKA) with 42 patients undergoing TKA with no prior microfracture. Researchers documented both subjective and functional Knee Society Score, as well as complications.

Data showed a significantly smaller increase in mean subjective Knee Society Score among the microfracture group (52.9 to 77.6) vs. the control group (51.3 to 83.8). Researchers observed similar results regarding mean functional Knee Society Score in the microfracture group (63 to 88.9) vs. the control group (52.4 to 87.1). They further noted a 4.8% failure rate, defined as revision arthroplasty for any reason, in the microfracture group vs. 2.4% in the control group at 5 years.

Older age at TKA resulted in smaller improvement in subjective Knee Society Score, according to multivariate analysis. Subjective Knee Society Score was negatively affected by paired relationships between increased age and decreased preoperative range of motion and women with an increased BMI, results showed. – by Casey Tingle

Disclosures: Krych is a paid consultant for Arthrex and has received research support from Ceterix and Histogenics. Please see the full study for a list of all other authors’ relevant financial disclosures.