Patellofemoral relationships and cartilage breakdown

Harilainen, Arsi; Lindroos, Marko; Sandelin, Jerker; Tallroth, Kaj

doi:10.1007/s00167-003-0467-3

Cited by 18 publications

(25 citation statements)

References 14 publications

(17 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…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%

See 1 more Smart Citation

Patterns of Patellofemoral Articular Cartilage Wear in Cadavers

Gorniak¹

2009

J Orthop Sports Phys Ther

View full text Add to dashboard Cite

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.

show abstract

Section: Specimensmentioning

confidence: 99%

Section: Specimensmentioning

confidence: 99%

Patterns of Patellofemoral Articular Cartilage Wear in Cadavers

Gorniak¹

2009

J Orthop Sports Phys Ther

View full text Add to dashboard Cite

show abstract

“…Additionally, the Q -angle as measured as the tibial tubercle-trochlear groove distance (TT-TG) has been found to be greater in those with PFOA [2]. To date, there have been few reports comparing PFJD to radiographic indices of patellofemoral alignment [5, 11, 14]. One study did find that individuals with lateral-sided PFJD had greater lateral patella tilt and displacement and no difference in patella height [14].…”

Section: Introductionmentioning

confidence: 99%

Radiographic parameters associated with lateral patella degeneration in young patients

Noehren

Duncan

Lattermann

2012

Knee Surg Sports Traumatol Arthrosc

View full text Add to dashboard Cite

Purpose Localized articular cartilage degeneration in the patellofemoral joint is a common but yet understudied condition in younger patients. The purpose of this paper was to determine whether there are significant differences in radiographic alignment between those with and without isolated lateral patellofemoral degeneration. Methods Subjects with isolated symptomatic lateral patellofemoral degeneration and control subjects with no radiographic degeneration participated in the study. Variables of interest included the Caton-Deschamps index, sulcus angle, lateral patellofemoral angle, Dejour classification of trochlear dysplasia, patella linear displacement and the tibial tubercle-trochlear groove distance. Results We found significant differences between the patellofemoral degeneration group versus control group, respectively, for the Caton-Deschamps index (1.12 ± 0.1 vs. 1.00 ± 0.1), lateral patellofemoral angle (10.6 ± 4.3 vs. 16.6 ± 5.5) and tibial tubercle-trochlear groove distance (16.6 ± 4.0 vs. 9.0 ± 4.3). However, we found no difference in the sulcus angle (141.2 ± 8.2 vs. 137.0 ± 6.0), patella linear displacement (3.7 ± 1.9 vs. 4.0 ± 1.7) or in the Dejour Classification. Conclusion It appears that isolated lateral patellofemoral degeneration is associated with specific radiographic indices. Even though the radiographic measures in patients with degeneration may not be considered pathologic, they are “high normal” and may represent a risk factor for the development of focal chondral degeneration in the lateral trochlea and patella.

show abstract

“…Many of these studies assessed the PF dysfunction but not specifically relate the observed retropatellar cartilage changes to the kneeling ability. Certain studies described the damage in the medial facet [14,[19][20][21][22][23]; the lateral facet [14,19,20,[22][23][24][25][26][27][28]; the central patella [22,23,25]; the medial femoral condyle [23,24] and the lateral femoral condyle [22][23][24]. These studies reported that the lateral and medial facets could be damaged with malalignment of the patella.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover; the lateral patellar facet is mainly involved with chondromalacia patellae and with patellofemoral compression syndrome. Studies on patellofemoral dysfunction and pain describe increased lateral contact and patellofemoral joint pressure [13,17,18,[23][24][25] and suggests an increase in lateral patellar and lateral femoral articular wear. 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.…”

Section: Discussionmentioning

confidence: 99%

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

Benfayed¹,

Moran²,

Simpson³

et al. 2017

Orthop Muscular Syst

View full text Add to dashboard Cite

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.

show abstract

Patellofemoral relationships and cartilage breakdown

Cited by 18 publications

References 14 publications

Patterns of Patellofemoral Articular Cartilage Wear in Cadavers

Patterns of Patellofemoral Articular Cartilage Wear in Cadavers

Radiographic parameters associated with lateral patella degeneration in young patients

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

Contact Info

Product

Resources

About