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Patellofemoral Arthritis Differential Diagnoses

  • Author: Dinesh Patel, MD, FACS; Chief Editor: Thomas M DeBerardino, MD  more...
 
Updated: Mar 31, 2015
 
 

Diagnostic Considerations

Patellofemoral arthritis usually affects the same patient population affected by arthritis of other joints. Increasing age, obesity, overuse, chronic joint instability, prior interarticular fractures, and systemic inflammatory conditions are risk factors for the development of arthritis in the hip, knee, patella, and other weight-bearing joints. Patellofemoral arthritis can also occur in younger patients as a result of malalignment or trauma.

Differential Diagnoses

 
 
Contributor Information and Disclosures
Author

Dinesh Patel, MD, FACS Associate Clinical Professor of Orthopedic Surgery, Harvard Medical School; Chief of Arthroscopic Surgery, Department of Orthopedic Surgery, Massachusetts General Hospital

Dinesh Patel, MD, FACS is a member of the following medical societies: American Academy of Orthopaedic Surgeons

Disclosure: Nothing to disclose.

Coauthor(s)

H Del Schutte, Jr, MD Associate Professor of Orthopedic Surgery, Department of Orthopedic Surgery, Medical University of South Carolina

H Del Schutte, Jr, MD is a member of the following medical societies: American Academy of Orthopaedic Surgeons, American Medical Association, American Orthopaedic Association, California Medical Association, South Carolina Medical Association, Southern Medical Association, Southern Orthopaedic Association, Orthopaedic Research Society, American Association of Hip and Knee Surgeons

Disclosure: Nothing to disclose.

Kathleen A Hogan, MD Fellow in Arthroplasty, Department of Orthopedics, Brigham and Women's Hospital

Kathleen A Hogan, MD is a member of the following medical societies: Sigma Xi

Disclosure: Nothing to disclose.

Specialty Editor Board

Francisco Talavera, PharmD, PhD Adjunct Assistant Professor, University of Nebraska Medical Center College of Pharmacy; Editor-in-Chief, Medscape Drug Reference

Disclosure: Received salary from Medscape for employment. for: Medscape.

Chief Editor

Thomas M DeBerardino, MD Associate Professor, Department of Orthopedic Surgery, Consulting Surgeon, Sports Medicine, Arthroscopy and Reconstruction of the Knee, Hip and Shoulder, Team Physician, Orthopedic Consultant to UConn Department of Athletics, University of Connecticut Health Center

Thomas M DeBerardino, MD is a member of the following medical societies: American Academy of Orthopaedic Surgeons, American Orthopaedic Association, American Orthopaedic Society for Sports Medicine

Disclosure: Serve(d) as a director, officer, partner, employee, advisor, consultant or trustee for: Arthrex, Inc.; Ivy Sports Medicine; MTF; Aesculap; The Foundry, Cotera; ABMT<br/>Received research grant from: Histogenics; Cotera; Arthrex.

Additional Contributors

Charles T Mehlman, DO, MPH Professor of Pediatrics and Pediatric Orthopedic Surgery, Division of Pediatric Orthopedic Surgery, Director, Musculoskeletal Outcomes Research, Cincinnati Children's Hospital Medical Center

Charles T Mehlman, DO, MPH is a member of the following medical societies: American Academy of Pediatrics, American Fracture Association, Scoliosis Research Society, Pediatric Orthopaedic Society of North America, American Medical Association, American Orthopaedic Foot and Ankle Society, American Osteopathic Association, Arthroscopy Association of North America, North American Spine Society, Ohio State Medical Association

Disclosure: Nothing to disclose.

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Patellofemoral arthritis. The sulcus angle is the angle formed by the condyles and the sulcus. This is a measurement of trochlear depth. A finding greater than 138° indicates the presence of patellofemoral dysplasia.
Patellofemoral arthritis. The patellofemoral index is the ratio of M, the closest distance between the articular ridge and the medial condyle, and L, the closest distance between the lateral facet and condyle.
Patellofemoral arthritis. The lateral patellofemoral angle is the angle between the intercondylar line and the lateral facet.
Patellofemoral arthritis. The Insall-Salvati ratio is used to assess the position of the patella and determine if the patella alta or patella baja is present. The ratio of the height of the patella to the length of the patella tendon should be 1:1.
Patellofemoral arthritis. Anteroposterior, lateral, and patellar views of an arthritic knee demonstrate severe patellofemoral arthritis. This patient subsequently underwent total knee arthroplasty.
Patellofemoral arthritis. Poor bone quality of the patella made a patella resurfacing procedure impossible in this patient who underwent total knee arthroscopy for severe arthritis.
Patellofemoral arthritis. This patient had severe medial compartment arthritis but a relatively normal patellofemoral joint. Therefore, patellofemoral resurfacing was not performed at the time of surgery.
Patellofemoral arthritis.
 
 
 
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