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Effects of Autologous Microfragmented Adipose Tissue on Bone Healing: A Blinded, Prospective, Randomised Canine Clinical Trial - Lipogems

Luca Pennasilico, Preprints.org, 2023.

Abstract

The aim of this study was to evaluate the effects of autologous microfragmented adipose tissue (MFAT), obtained by mechanical fragmentation, on radiographic bone healing in dogs subjected to tibial plateau levelling osteotomy (TPLO). Twenty dogs with unilateral cranial cruciate disease were enrolled and randomly assigned to the treatment group (MFAT) or the control group (NT). The MFAT group underwent TPLO and autologous MFAT intra-articular administration while the NT group underwent TPLO alone. The adipose tissue was collected from the thigh region and MFAT was obtained by mechanical fragmentation at the end of the surgery. The patients were subjected to X-ray exam preoperatively, immediately postoperatively (T0) and at 4 (T1) and 8 (T2) weeks postoperatively. Two radiographic scores that had previously been described for the evaluation of bone healing after TPLO were used. A 12-point scoring system (from 0 = no healing to 12= complete remodelling) was used at T0, T1 and T2, while a 5-point scoring system (from 0 = no healing to 4 = 76%–100% of healing) was used at T1 and T2. The median healing scores were significantly higher at T1 and T2 for the MFAT group compared with the NT group for the 12- point (p < 0.05) and 5-point (p < 0.05) scoring systems. The intra-articular injection of autologous microfragmented adipose tissue can accelerate bone healing after TPLO without complications.

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