The role of patellar alignment and tracking in vivo: The potential mechanism of patellofemoral pain syndrome

Song, Chen-Yi; Lin, Jiu-Jenq; Jan, Mei-Hwa; Lin, Yeong-Fwu

doi:10.1016/j.ptsp.2011.02.008

Cited by 42 publications

(44 citation statements)

References 39 publications

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“…It is considered that our results showing the increment of patella tilt after ADVANCE MP prosthesis is not so unfavorable for patients. Many previous reports have already stated that symptomatic PF joint is independent of lateral patellar tilt [42,43]. Indeed, the patients followed up in this study are clinically asymptomatic, and doing well.…”

Section: Discussionsupporting

confidence: 53%

Evaluation of patellofemoral joint in ADVANCE® Medial-pivot total knee arthroplasty

Chinzei

Ishida

Matsumoto

et al. 2013

International Orthopaedics (SICOT)

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Purpose ADVANCE® Medial Pivot (MP) (Wright Medical) total knee arthroplasty (TKA) was established to replicate normal tibio-femoral knee joint kinematics, however, its influence on the patello-femoral (PF) joint is unclear. The purpose in this study was to assess the PF joint conditions in Advance MP TKA, via radiography and three-dimensional image-matching software. Methods Ten subjects with osteoarthritis were treated with the ADVANCE MP TKA. Pre-operatively and one month after surgery, skyline views at 30, 60, and 90°of flexion were taken, and patella shift and tilt were measured. With 2D-3D registration techniques using software, implant orientations were matched with the pre-operative CT and changes in the anterior part of the femoral prosthesis, condylar twist angle (CTA) for femoral rotation, and tibial rotation were evaluated. The relationships between morphological and rotational changes were evaluated. Results There were significant differences in patella tilt at 60°a nd patella shift at all angles between pre-and post-operation (p<0.05). No correlation was found between morphological changes in the anterior femur with patella tilt and shift. A positive correlation between postoperative CTA and patella shift at 90°was found (p<0.05); however, no correlation was found between rotational alignment of the tibial component and patella tilt and shift. Conclusions ADVANCE MP TKA changed patello-femoral joint kinematics, compared to that found before surgery. The kinematic features were mainly due to the design concepts for tibio-femoral joint motion, indicating the difficulty to reproduce normal patello-femoral joint kinematics after TKA.

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Section: Discussionsupporting

confidence: 53%

Evaluation of patellofemoral joint in ADVANCE® Medial-pivot total knee arthroplasty

Chinzei

Ishida

Matsumoto

et al. 2013

International Orthopaedics (SICOT)

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“…It is common in young and athletic individuals (Song et al, 2011). The results of our study on nonpathological knees suggest that a high level of activity leads to better dynamic patella stabilization.…”

Section: Discussionmentioning

confidence: 52%

“…Patellofemoral pain syndrome (PFPS) is a common condition causing anterior or retropatellar knee pain with a high prevalence in young athletic individuals (Cook et al, 2010;Song et al, 2011). Estimates of its prevalence vary from 3% to 40% of the population (Callaghan and Selfe, 2009), with the majority of sufferers being female (Boling et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

An investigation into the architecture of the vastus medialis oblique muscle in athletic and sedentary individuals: An in vivo ultrasound study

et al. 2014

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There is thought to be a relationship between the vastus medialis oblique muscle (VMO) and patellofemoral pain syndrome (PFPS), a condition that has a high prevalence in young athletic individuals. Following a suggestion that there may be a link between the architecture of the VMO and an individual's activity level, the aim of this study was to determine any differences in two measurable parameters of the VMO between two populations with widely differing activity levels. The parameters measured were VMO fiber angle and insertion ratio, which is the proportion of the medial patellar border with VMO fibers inserting onto it (%). Eighty-two knees from 26 athletic volunteers and 15 sedentary volunteers (aged 20-28 years) were assessed using ultrasound. Activity level was defined using the Tegner scoring system. The mean VMO angle (°) for the athletic group was significantly higher than for the sedentary group at 67.8° and 53.6°, respectively. There was no significant difference in insertion ratio between the athletic group, 43.0%, and the sedentary group, 39.5%. This study found that greater VMO fiber angles were seen in individuals with higher activity levels, exerting a stronger medial stabilizing force on the patella. This has important implications for the treatment of PFPS, particularly in athletic patients, which frequently focus on VMO strengthening exercises.

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“…However individuals with PFPS do not always present with patellar mal tracking. [9] Hip strengthening, quadriceps strengthening (particularly VMO), patellar taping, patellar and knee bracing and foot orthosis have been suggested as treatment options for PFPS.…”

Section: Overviewmentioning

confidence: 99%

Effect of Pain and Hip Muscle Strength and Flexibility on Functional Status of Females with Patellofemoral Pain Syndrome

2016

IJSR

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Abstract:The objective of this study was to determine the effect of pain and hip muscle strength and flexibility on functional status of females with the Patellofemoral pain syndrome. This cross sectional study was conducted at Chaudhary Mohammad Akram hospital, Sports and Spine center and Ehsan rehabilitation center on a sample of 40 females. Non-probability, purposive sampling was used. Kujala score was used to measure the functional status of females with PFPS. Pain was measured through Visual analogue scale (VAS) and hip muscle strength and flexibility were tested through manual muscle testing (MMT) and special tests respectively. Linear regression was used to assess the effect of pain, muscle strength and flexibility on functional status using Kujala score as dependent variable. Pain explained 37.6% variation in the functional status of females with patellofemoral pain syndrome. Prediction of the functional status of females with PFPS by pain along with gluteus maximus strength was statistically significant (p=.000). The study concludes that pain in unilateral squat and strength of hip extensors are better predictors of functional status in females with patellofemoral pain syndrome. However, Hip muscle flexibility is not a good predictor of functional status.

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The role of patellar alignment and tracking in vivo: The potential mechanism of patellofemoral pain syndrome

Cited by 42 publications

References 39 publications

Evaluation of patellofemoral joint in ADVANCE® Medial-pivot total knee arthroplasty

Evaluation of patellofemoral joint in ADVANCE® Medial-pivot total knee arthroplasty

An investigation into the architecture of the vastus medialis oblique muscle in athletic and sedentary individuals: An in vivo ultrasound study

Effect of Pain and Hip Muscle Strength and Flexibility on Functional Status of Females with Patellofemoral Pain Syndrome

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