In-depth Analysis
CLINICAL SHEET
Use of Micro - and Nano - Fragmented Adipose Tissue in:
MODERATE - TO - SEVERE OSTEOARTHRITIS
Treatment Description
Autologous adipose tissue, processed through mechanical micro- or nano-fragmentation, is a rich biological source of mesenchymal stromal cells (ADSCs), immunomodulatory cytokines, and growth factors (VEGF, TGF-β, IGF-1). When injected intra-articularly or peri-articularly, it is used as a regenerative co-treatment in patients with advanced osteoarthritis in the pre-arthroplasty phase or as a temporary alternative to joint replacement in those with surgical contraindications.
Biological and Pathophysiological Effects
→ Modulation of the synovial environment and reduction of chronic inflammation
→ Stimulation of chondrocyte activity and cartilage metabolism
→ Rebalancing between extracellular matrix degradation and synthesis
→ Trophic effects on periarticular structures (capsule, ligaments, synovium)
→ Slowing of degenerative progression in joint compartments
Specific Clinical Indications
→ Grade II-III knee or hip osteoarthritis (Kellgren-Lawrence) in non-surgical candidates
→ Palliative treatment to improve joint function in frail patients or those with comorbidities
→ Chronic joint pain refractory to conventional intra-articular injections
→ Biological co-treatment in minimally invasive alignment or stabilization surgery
→ Intraoperative injection during primary joint replacement in high-risk inflammatory patients
Documented Clinical Benefits
→ Significant reduction in pain and joint swelling
→ Improved mobility and joint function (WOMAC, KOOS scores)
→ Delayed need for joint replacement in younger or high-risk patients
→ Decreased use of systemic anti-inflammatory drugs or corticosteroid injections
→ High safety profile with no systemic adverse events
Conclusions
The use of autologous micro-/nano-fragmented adipose tissue in moderate-to-severe osteoarthritis represents a safe and biologically active regenerative option. It plays a role in both advanced conservative management and as an adjunct in surgical pathways, contributing to joint stabilization and improved patient quality of life.
KNEE ARTHROPLASTY
Treatment Overview
Autologous adipose tissue, processed through mechanical fragmentation (micro- or nano-fat), can be used in joint replacement surgery as a regenerative biomaterial. Periprosthetic infiltration, performed intraoperatively or in the early postoperative period, aims to modulate the local biological environment and promote tissue integration.
Biological and Pathophysiological Effects
→ Release of anti-inflammatory cytokines and growth factors (IGF-1, HGF, VEGF)
→ Modulation of local inflammation and inhibition of capsular fibrosis
→ Promotion of periarticular neovascularization
→ Biological support to surrounding soft tissues
Specific Clinical Indications
→ Total knee arthroplasty in patients with compromised soft tissues
→ Revision surgeries with inflammatory or fibrotic outcomes
→ Poor biological response in elderly or comorbid patients
→ High risk of postoperative stiffness
Documented Clinical Benefits
→ Improved postoperative range of motion
→ Reduced local edema and inflammation
→ Lower incidence of periprosthetic adhesions
→ Favorable safety profile with autologous use
Conclusions
Micro- and nano-fat may serve as a useful biological adjunct in knee replacement surgery, especially in high-risk patients, fostering a more favorable environment for tissue healing and implant integration.
FRACTURE AT HIGH RISK OF DELAYED UNION
Treatment Overview
In patients with complex fractures or risk factors for impaired bone healing, perifracture injection of micro/nano-fragmented adipose tissue can act as a biological enhancer alongside mechanical stabilization.
Biological and Pathophysiological Effects
→ Paracrine action of adipose-derived mesenchymal stem cells (ADSCs)
→ Activation of endogenous osteogenic precursors
→ Reduction of chronic local inflammation
→ Enhancement of local angiogenesis
Specific Clinical Indications
→ Complex articular or diaphyseal fractures at risk for non-union
→ Open fractures or those with significant soft tissue damage
→ Advanced osteoporosis or systemic comorbidities impacting bone healing
→ Delayed union following initial surgery
Documented Clinical Benefits
→ Enhanced callus formation
→ Acceleration of the reparative process
→ Reduction in chronic pain associated with pseudoarthrosis
→ Safe use in traumatology settings
Conclusions
Autologous adipose tissue, owing to its regenerative and immunomodulatory potential, represents a promising biological option to support bone healing and prevent non-union in high-risk fracture scenarios.
CHRONIC POST-PROSTHETIC SYNOVITIS
Treatment Overview
Intra-articular administration of nano-fragmented adipose tissue may be used in patients with symptomatic joint prostheses suffering from chronic, non-septic synovitis or persistent reactive effusions.
Biological and Pathophysiological Effects
→ Reduction in pro-inflammatory synovial activity
→ Modulation of the peri-prosthetic joint environment
→ Trophic effect on residual synovial and capsular cells
→ Stabilization of joint lubrication balance
Specific Clinical Indications
→ Chronic post-prosthetic joint pain without signs of infection
→ Recurrent effusions with negative imaging and lab work-up
→ Reactive or degenerative inflammatory synovitis
→ Non-surgical candidates for revision procedures
Documented Clinical Benefits
→ Pain relief and symptom reduction
→ Decrease in joint effusion volume
→ Functional stabilization over follow-up
→ Excellent safety profile with no implant interference
Conclusions
In the absence of surgical indications, intra-articular nano-fat infiltration offers a conservative, biologically active treatment for chronic synovitis in prosthetic joints, supported by its anti-inflammatory action.
POST-TRAUMATIC SOFT TISSUE FIBROSIS
Treatment Overview
Ultrasound-guided injection of nano-fragmented adipose tissue into fibrotic soft tissues aims to modulate fibroblastic activity and restore biomechanical properties of the affected structures.
Biological and Pathophysiological Effects
→ Inhibition of fibroblast activation and disorganized collagen deposition
→ Improvement in tissue elasticity and fascial trophism
→ Downregulation of pro-fibrotic cytokines
→ Restoration of fascial and capsuloligamentous gliding
Specific Clinical Indications
→ Postoperative stiffness due to periarticular fibrosis
→ Adhesions following surgery or fracture
→ Scar tissue following necrosis or infection
→ Chronic myofascial pain from contractures
Documented Clinical Benefits
→ Improved passive joint mobility
→ Pain reduction during movement and stretching
→ Prevention of capsular contracture
→ Well-tolerated local response
Conclusions
Nano-fat infiltration in post-traumatic fibrotic tissue may serve as an adjunctive therapy for functional recovery by exerting antifibrotic effects and restoring local tissue homeostasis.
COMPLEX PROSTHETIC REVISION
Treatment Overview
In prosthetic revision surgeries, autologous micro/nano-fragmented adipose tissue can be applied perioperatively as a regenerative adjunct to improve tissue biocompatibility and enhance biological integration of the new implant.
Biological and Pathophysiological Effects
→ Modulation of peri-prosthetic inflammatory response
→ Promotion of angiogenesis in damaged tissues
→ Support of soft tissue trophism following extensive revisions
→ Trophic effects on residual joint capsule
Specific Clinical Indications
→ Revision of failed implants with soft tissue compromise
→ Reimplantation after infection (post-septic loosening)
→ Painful mechanical loosening with instability
→ Complex revision procedures in frail patients
Documented Clinical Benefits
→ Reduction in postoperative joint stiffness
→ Support for wound healing and soft tissue coverage
→ Decrease in local inflammatory recurrence
→ No mechanical interference with prosthetic components
Conclusions
The intraoperative use of autologous adipose tissue in complex prosthetic revision procedures may enhance the local biological environment, supporting implant integration and postoperative functional outcomes.
POLYTRAUMA PATIENTS
Treatment Overview
In polytrauma patients, the use of autologous micro- or nano-fragmented adipose tissue represents a regenerative approach complementary to surgical stabilization and systemic support strategies. Local infiltration at the site of soft tissue injuries, peri-fracture zones, or areas prone to post-traumatic necrosis can enhance tissue repair quality. Application may also occur intraoperatively during osteosynthesis or fasciotomy procedures.
Biological and Pathophysiological Effects
→ Modulation of local inflammation and reduction of tissue edema
→ Stimulation of vascular regeneration in hypoperfused areas
→ Anti-fibrotic action in damaged soft tissues
→ Trophic support to the regeneration of muscle, fascia, skin, and joint capsule
→ Restoration of homeostasis in traumatized microenvironments
Specific Clinical Indications
→ Polytrauma with complex soft tissue injuries (limbs, pelvis, chest)
→ Open fractures with necrosis or wound dehiscence
→ Peripheral vascular compromise or delayed healing
→ Postoperative complications (fibrosis, adhesions, fistulas)
→ Biological support in unstable patients or those with systemic comorbidities
Documented Clinical Benefits
→ Improved wound healing and tissue vitality
→ Reduction of local inflammatory complications (seroma, necrosis, fistulas)
→ Preservation of peri-osseous tissue quality in frail patients
→ Lower incidence of post-traumatic joint stiffness
→ High safety profile even in critical settings due to autologous origin
Conclusions
Treatment with micro- and nano-fragmented adipose tissue in polytrauma patients constitutes a valuable biological adjunct in complex surgical pathways. Its ability to modulate inflammation, promote vascular regeneration, and reduce soft tissue complications makes it particularly suitable in cases of high systemic instability, extensive tissue damage, or impaired reparative capacity.