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Patellofemoral osteoarthritis — Clinical Guidelines

Overview

Patellofemoral osteoarthritis (PFOA) is a degenerative joint condition affecting the patella and femur, often evolving from patellofemoral pain (PFP) and characterized by chronic knee pain and functional limitations 3 1.

Diagnosis

Clinical history and physical examination crucial for identifying symptoms and biomechanical issues 1 6.

Imaging studies (X-ray, MRI) help differentiate PFOA from other patellofemoral disorders, assessing cartilage status and bone alignment 1 10.

Venous engorgement on intra-osseous venography observed in both chondromalacia patellae and PFOA, though not diagnostic alone 10.

Management

First-line treatments:

- Physical therapy: Focus on strengthening quadriceps, hip abductors, and improving patellar tracking; exercises include isometrics, terminal knee extensions, and low-impact activities 9 7. - Weight management: Reducing load on the knee joint 3.

Adjunctive treatments:

- Orthotics and bracing: Custom foot orthotics and knee braces to correct alignment and reduce stress 1 7. - Pain management: Nonsteroidal anti-inflammatory drugs (NSAIDs) for symptomatic relief 3.

Special Populations

Pediatrics: Early intervention focusing on biomechanical correction and strengthening exercises to prevent progression 6.

Elderly: Emphasis on conservative management due to higher surgical risks; careful consideration of comorbidities 3.

Comorbidities: Management should account for coexisting conditions affecting mobility and pain perception 3.

Key Recommendations

Implement a comprehensive physical therapy program tailored to strengthen key muscle groups and improve patellar tracking (Evidence: Strong 7 9).

Consider weight management strategies to reduce mechanical stress on the patellofemoral joint (Evidence: Moderate 3).

Use NSAIDs judiciously for pain relief, particularly in managing acute exacerbations (Evidence: Moderate 3).

Early identification and correction of biomechanical issues through orthotics and bracing can prevent disease progression (Evidence: Moderate 1 7).

Monitor for signs of progression to more severe osteoarthritis, especially in patients undergoing osteotomies (Evidence: Weak 5).

References

1 Ophey M, Koëter S, van Ooijen L, van Ark M, Boots F, Ilbrink S et al.. Dutch multidisciplinary guideline on anterior knee pain: Patellofemoral pain and patellar tendinopathy. Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA 2025. link 2 Zambarano EK, Bazett-Jones DM, de Oliveira Silva D, Barton CJ, Glaviano NR. Confidence and Knowledge of Athletic Trainers in Managing Patellofemoral Pain. Journal of athletic training 2022. link 3 Lack S, Neal B, De Oliveira Silva D, Barton C. How to manage patellofemoral pain - Understanding the multifactorial nature and treatment options. Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine 2018. link 4 Bolgla LA, Boling MC, Mace KL, DiStefano MJ, Fithian DC, Powers CM. National Athletic Trainers' Association Position Statement: Management of Individuals With Patellofemoral Pain. Journal of athletic training 2018. link 5 LaPrade RF. Editorial Commentary: Is It the Osteotomy That Is Causing the Development of Patellofemoral Osteoarthritis or Is It the Normal Progression of Preexisting Osteoarthritis?. Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association 2017. link 6 Bessette M, Saluan P. Patellofemoral Pain and Instability in Adolescent Athletes. Sports medicine and arthroscopy review 2016. link 7 Barton CJ, Lack S, Hemmings S, Tufail S, Morrissey D. The 'Best Practice Guide to Conservative Management of Patellofemoral Pain': incorporating level 1 evidence with expert clinical reasoning. British journal of sports medicine 2015. link 8 Naseri Z, Mohri M, Aslani MR, Mohammadi G, Alavi Tabatabaee AA. Effects of short-term over-supplementation of copper in milk on hematology, serum proteins, weight gain, and health in dairy calves. Biological trace element research 2011. link 9 Hungerford DS, Lennox DW. Rehabilitation of the knee in disorders of the patellofemoral joint: relevant biomechanics. The Orthopedic clinics of North America 1983. link 10 Waisbrod H, Treiman N. Intra-osseous venography in patellofemoral disorders. A preliminary report. The Journal of bone and joint surgery. British volume 1980. link 11 Pinals RS. Genu amoris. Arthritis and rheumatism 1976. link

Patellofemoral osteoarthritis