Patellofemoral Joint Contact Area Is Influenced by Tibiofemoral Rotation Alignment in Individuals Who Have Patellofemoral Pain

Salsich, Gretchen B.; Perman, William H.

doi:10.2519/jospt.2007.37.9.521

Cited by 126 publications

(60 citation statements)

References 37 publications

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“…Abnormal anthropometrics of the patella or distal femoral condyles due to aging or repetitive movement of the knee would alter the joint function and tend to affect the joint-specific wear pattern [18]. Previous studies analysed the RPC wear and patterns of damage.…”

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%

See 1 more Smart Citation

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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Section: Discussionmentioning

confidence: 99%

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

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“…There is increasing evidence that proximal factors may be associated with the pathogenesis of PFP.Biomechanical studies have shown that excessive femoral internal rotation in weight bearing leads to increased lateral patellar tracking, reduction in patellofemoral contact area (Besier et al, 2008;Huberti and Hayes, 1984;Lee et al, 2003;Li et al, 2004;Salsich and Perman, 2007) and increased lateral patellofemoral joint stress (Souza et al, 2010). This is proposed to lead to change in the patellofemoral joint articular cartilage, overloading the subchondral bone, causing pain .…”

Section: Introductionmentioning

confidence: 99%

The outcome of hip exercise in patellofemoral pain: A systematic review

et al. 2016

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Patellofemoral pain (PFP) is one of the most common lower extremity conditions seen in clinical practice. Current evidence shows that there are hip strength deficits, delayed onset and shorter activation of gluteus medius in people with PFP. The aim of this review was to systematically review the literature to investigate the outcome of hip exercise in people with PFP.Method AMED, CINAHL, Cochrane, EMBASE, PEDro, Pubmed, Science direct and SPORTDiscus databases were searched from inception to November 2014 for RCTs, non-randomised studies and case studies. Two independent reviewers assessed each paper for inclusion and quality. ResultsTwenty one papers were identified;eighteen investigating strengthening exercise, two investigating the effect of neuromuscular exercise and one study investigated the effect of hip exercise for the prevention of PFP.Hip and knee strengthening programmes were shown to be equally effective. Limited evidence indicates that the addition of hip exercise to an exercise programme is beneficial. Limited evidence demonstrates that motor skill retraining in a participant group who displayed abnormal hip alignment in running improves pain. ConclusionThe evidence consistently demonstrated that both hip strengthening and neuromuscular exercise has a beneficial effect on pain and function in people with PFP. Strengthening exercise predominantly addressed abductor and external rotator muscle groups. 2 A consensus from PFP researchers for standardisation of methodology is recommended to enable meaningful comparison between trials.

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“…The patellofemoral contact area was described in accordance with the Salsich et al, [22] recommendations. PCP = PTCF / contact area (5)…”

Section: Data Processingmentioning

confidence: 99%

Effects of front and back squat techniques on patellofemoral joint kinetics in males

Sinclair¹,

Atkins²,

Kudiersky³

et al. 2015

JBEI

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Purpose: The barbell squat is fundamental in strength and conditioning, with two principal variants; the back and front squat. Unfortunately, the propensity for injury is high particularly at the knee. The aim of the current investigation was examine the influence of front and back squat variations on patellofemoral joint load. Methods:Patellofemoral loads were obtained from thirty-five experienced male participants, who completed both back and front squats at 70% of 1 RM. Differences between squat conditions were examined using Bonferroni adjusted (P = 0.008) paired t-tests. Results:The results showed that significant differences (P < .008) in patellofemoral load were identified between both conditions with the highest load being experienced during the back squat exercise.Conclusions: Given the proposed relationship between the magnitude of the load experienced by the patellofemoral joint and associated injury pathology, the back squat appears to place lifters at greater risk from injury. Therefore, it may be prudent therefore for lifters who are predisposed to patellofemoral pain syndrome to utilize the front squat in their training.

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Patellofemoral Joint Contact Area Is Influenced by Tibiofemoral Rotation Alignment in Individuals Who Have Patellofemoral Pain

Cited by 126 publications

References 37 publications

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

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

The outcome of hip exercise in patellofemoral pain: A systematic review

Effects of front and back squat techniques on patellofemoral joint kinetics in males

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