Patellofemoral Pain Syndrome: A Critical Analysis of Current Concepts

Cleland, Josh; McRae, Meghann

doi:10.1179/108331902235001606

Cited by 9 publications

(7 citation statements)

References 31 publications

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“…6,17,22,26,39,50 However, the medial facet was a primary area of wear in this study. In addition, the odd facet showed high wear, even though the odd facet should not make contact with the medial femoral condyle until 135° of flexion when the patella is tilted into the intercondylar fossa.…”

Section: 24mentioning

confidence: 80%

“…7,12,38,44 These studies state that the lateral patellar facet is mainly involved with chondromalacia patellae and with patellofemoral compression syndrome, while either the lateral or medial facets can be damaged with patellar malalignment. This literature on patellofemoral dysfunction and pain describes increased lateral contact and patellofemoral joint pressure, 6,7,21,22,42,44,48 and suggests an increase in lateral patellar and lateral femoral articular wear. This literature also indicates that the medial facet shows more degeneration with aging than the lateral facet.…”

Section: Specimensmentioning

confidence: 99%

“…There were 13 males and 13 feor damage to the medial patellar facet, 3,12,15,26,29,38,44,49,50 the lateral patellar facet, 3,6,7,12,15,21,26,29,35,44,48,49,52 the central patella, 12,21,38,44 the medial femoral condyle, 7,12,44 and the lateral femoral condyle. 7,12,38,44 These studies state that the lateral patellar facet is mainly involved with chondromalacia patellae and with patellofemoral compression syndrome, while either the lateral or medial facets can be damaged with patellar malalignment.…”

Section: Specimensmentioning

confidence: 99%

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Patterns of Patellofemoral Articular Cartilage Wear in Cadavers

Gorniak¹

2009

J Orthop Sports Phys Ther

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Anatomical studies describe the structure of the articulating bones, the articular cartilage, and the lack of joint congruity. 7,12,17,44,[50][51][52] The triangular patella has a rounded superior pole and a pointed inferior pole (FiGUre 1). Anteriorly, its surface is embedded in the quadriceps tendon. Posteriorly, its surface articulates with t STUdY deSiGn: Descriptive.t oBJeCTiVe: Describe and compare patellar and femoral condylar wear patterns, and the wear frequency of both, relative to each other, gender, and sidedness.t BaCkGroUnd: Studies on normal and pathological patellar cartilage and patellofemoral joint biomechanics are plentiful. However, patellar wear patterns are undefined, as is the relationship of patellar to femoral condylar wear.t MeTHodS: Articular wear was described for 50 patellae and matching femurs from 26 cadavers. Wear locations were transcribed to gridded templates, and these were compared graphically for frequency, gender, and sidedness of wear. The percent frequency of wear was calculated and areas of wear described.t reSULTS: Three patellar and 2 femoral types of wear patterns were observed, and 12 areas of patellar wear and 3 areas of femoral wear described. Patella wear was along the horizontal middle of the patella, with marked medial and odd facet wear. Femoral wear was on the anterior and posterior aspects of the medial condyle, and posterior aspect of the lateral femoral condyle. Patellar and femoral wear frequencies were similar bilaterally, but patellar wear may differ with gender.t ConCLUSionS: Patella and distal femur showed distinct wear patterns. The wear area under the patella matches the contact area between the patella and distal femur normally occurring between 45° to 90° of knee flexion. Patellofemoral assessment and treatment may differ for the aged population because of mechanical changes due to wear.

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Section: 24mentioning

confidence: 80%

Section: Specimensmentioning

confidence: 99%

Section: Specimensmentioning

confidence: 99%

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Patterns of Patellofemoral Articular Cartilage Wear in Cadavers

Gorniak¹

2009

J Orthop Sports Phys Ther

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“…Many theories have been proposed to explain the origin of PF pain, considering three main factors: lower extremity malalignment, muscular imbalance, and overuse (Adirim and Cheng, 2003;Bray and Roth, 1987;Cleland and McRae, 2002;Davidson, 1993;Green, 2005;Thomee et al, 1999). All factors assume disrupted PF tracking leading to increased stress above soft tissue thresholds (Earl and Vetter, 2007).…”

Section: Proposed Mechanismsmentioning

confidence: 97%

“…Patellofemoral pain syndrome (PFPS) affects approximately one in four people (Cleland and McRae, 2002); however, the cause of pain is unclear. While contributing factors in PFPS remain uncertain, abnormal patellar and femoral surface tracking has been commonly cited (Adirim and Cheng, 2003;Bray and Roth, 1987;Davidson, 1993;Green, 2005;Grelsamer and Weinstein, 2001).…”

Section: Introductionmentioning

confidence: 99%