Comparison of Patellar Mobility in Female Adults With and Without Patellofemoral Pain

Ota, Susumu; Nakashima, Takeshi; Morisaka, Ayako; Ida, Kunio; Kawamura, Morio

doi:10.2519/jospt.2008.2585

Cited by 23 publications

(40 citation statements)

References 32 publications

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“…Remarkable was that all studies described a clear definition of outcome measure (variable that might be associated with PFPS), except for the study from Al-Rawi et al 61. In only five studies the outcome assessor was blinded on health status (PFPS versus controls) of the subjects20 37 39 46 61 (table 2). …”

Section: Resultsmentioning

confidence: 99%

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Factors associated with patellofemoral pain syndrome: a systematic review

2012

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This review systematically summarises factors associated with patellofemoral pain syndrome (PFPS). A systematic literature search was conducted. Studies including ≥20 patients with PFPS that examined ≥1 possible factor associated with PFPS were included. A meta-analysis was performed, clinical heterogeneous data were analysed descriptively. The 47 included studies examined 523 variables, eight were pooled. Pooled data showed a larger Q-angle, sulcus angle and patellar tilt angle (weighted mean differences (WMD) 2.08; 95% CI 0.64, 3.63 and 1.66; 95% CI 0.44, 2.77 and 4.34; 95% CI 1.16 to 7.52, respectively), less hip abduction strength, lower knee extension peak torque and less hip external rotation strength (WMD -3.30; 95% CI -5.60, -1.00 and -37.47; 95% CI -71.75, -3.20 and -1.43; 95% CI -2.71 to -0.16, respectively) in PFPS patients compared to controls. Foot arch height index and congruence angle were not associated with PFPS. Six out of eight pooled variables are associated with PFPS, other factors associated with PFPS were based on single studies. Further research is required.

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Section: Resultsmentioning

confidence: 99%

“…Patella joint kinematics and mobility were described by 15 variables 41 46 65. In one study no statistical significant associations were found for patella joint kinematics and PFPS 46.…”

Section: Resultsmentioning

confidence: 99%

Factors associated with patellofemoral pain syndrome: a systematic review

2012

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“…1,23,45,50 From 20° to 90° of flexion, the patella moves distally with little to no medial-lateral translation 17,50 but may also translate laterally. 22,34,40 From 90° to 135° of flexion, the patella tilts into the intercondylar fossa of the femur, the lateral patellar facet is in contact with the lateral posterior femoral condyle, and the medial patellar facet contacts the medial posterior femoral condyle. 17,22,39,50 At 135°, the lateral patellar facet remains in contact with the lateral posterior femoral condyle and the vertical medial patellar ridge and odd facet contacts the medial posterior femoral condyle.…”

Section: Specimensmentioning

confidence: 99%

“…7 Biomechanical studies describe the movements of the patella and the contact areas and compression forces during movement. 1,3,9,16,17,22,24,26,31,34,37,39,40,45,47,48,50,52,53 During initial flexion (0°-20°), the patella moves medially and the vertical central ridge aligns in the anterior intercondylar groove of the femur. At 20° of flexion, the inferior pole of the patella is in contact with the intercondylar groove and the anterior medial and anterior lateral femoral condyles.…”

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confidence: 99%

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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“…These studies also indicate that the medial facet shows more damage with aging than the lateral facet [20,22] which is different than the observed RPC damages in this study; the lateral facets and medial facets almost equally affected. The authors of some of these studies described the gender differences in patellofemoral anatomy and mechanics [16,17,[29][30][31][32][33] but others describe no gender differences [7,16,20,22,[33][34][35]. Regarding the kneeling ability in this research study; 70% of women participated were unable to kneel (14/20) and only one man (10%) could not kneel before the surgery, furthermore; 90% of men (9/10) and 30% of women (6/20) were able to kneel.…”

Section: Discussionmentioning

confidence: 88%

Retropatellar Cartilage Morphology and Kneeling Ability: Cartilage Wear and Kneeling Function of TKA Patients

Benfayed¹,

Moran²,

Simpson³

et al. 2017

Orthop Muscular Syst

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Objectives: To investigate the retro-patellar cartilage (RPC) morphology and the patterns of retropatellar cartilage wear as well as the patients' kneeling ability to determine whether the kneeling ability is related to the area and pattern of wear in the cartilage.Methods: 30 patients undergoing primary TKAs participated in this study. The patients were seen in the preoperative assessment clinics and consented to allow intraoperative photographing of their retro patellar cartilage. These photographs were used to determine the area and pattern of wear by using Image J software. The total area of the retropatellar cartilage and the area of wear was measured and used to calculate the percentage of RPC wear. The percentages of retro patellar cartilage wear for all the patients were linked with their kneeling ability before the surgery.Results: 15 patients (cases numbered 1-15, termed group A) were able to kneel, and 15 patients (cases numbered 16-30, termed group B) were unable to kneel. The % of wears for all RPC images measured 3 times with a week interval and the average of the records in the 1st, 2nd, and 3rd week recorded for statistical analysis. Mean % of RPC wears in-group A was (15%), and in-group B was (36%). Intra-Rater and Inter-Rater Reliability statistically assessed by using Intraclass Correlation Coefficient. Patients who able to kneel (Group A) had normal RPC superior surfaces with no damages in comparison with patients who unable to kneel (Group B) who had damaged superior surfaces medially and laterally. All the RPC surfaces (Superior, Middle and Inferior) were damaged in Group B patients (Unable to kneel). Conclusion:No direct association was found between the retropatellar cartilage damage and the kneeling ability. The most damaged areas were found in the middle and lower thirds of retropatellar cartilage.

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Comparison of Patellar Mobility in Female Adults With and Without Patellofemoral Pain

Cited by 23 publications

References 32 publications

Factors associated with patellofemoral pain syndrome: a systematic review

Factors associated with patellofemoral pain syndrome: a systematic review

Patterns of Patellofemoral Articular Cartilage Wear in Cadavers

Retropatellar Cartilage Morphology and Kneeling Ability: Cartilage Wear and Kneeling Function of TKA Patients

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