Landing Strategies of Athletes with an Asymptomatic Patellar Tendon Abnormality

Edwards, Suzi; Steele, Julie R.; McGhee, Deirdre E.; Beattie, Sue; Purdam, Craig; Cook, Jill

doi:10.1249/mss.0b013e3181e0550b

Cited by 92 publications

(127 citation statements)

References 35 publications

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“…Decreased landing anterior-posterior GRF may reduce shearing or torsional effects on the lower extremity and patellar tendon loading. 14,28,29 Therefore, this may be a positive benefit of strapping but will need to be confirmed.…”

Section: 27mentioning

confidence: 99%

Patellar Tendon Straps Decrease Pain and May Alter Lower Extremity Kinetics in Those With Patellar Tendinopathy During Jump Landing

Rosen¹,

Simpson³

et al. 2017

International Journal of Athletic Therapy and Training

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Patellar tendinopathy participants had decreased pain with a strap while jumping.Anteriorly-directed ground reaction forces in all participants were decreased while wearing the strap.Kinetic changes may influence pain reduction in individuals who wear a patellar tendon strap. Key Points Key PointsPatellar tendinopathy is often managed with a patellar tendon strap, however, their effectiveness is unsubstantiated. The purpose of this study was to determine if straps altered pain or lower extremity kinetics of individuals with patellar tendinopathy during landing. Thirty participants with patellar tendinopathy and 30 controls completed drop jumps with and without patellar tendon straps. Wearing the strap, tendinopathy participants demonstrated significantly decreased pain and reduced knee adductor moment; all participants displayed significantly decreased anterior ground reaction force while wearing a strap. Patellar tendon strapping may reduce pain due to alterations in direction and magnitude of loading.

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Section: 27mentioning

confidence: 99%

Patellar Tendon Straps Decrease Pain and May Alter Lower Extremity Kinetics in Those With Patellar Tendinopathy During Jump Landing

Rosen¹,

Simpson³

et al. 2017

International Journal of Athletic Therapy and Training

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“…The presence of tendon pathology on imaging represents some risk factor for developing patellar tendon pain 1,27 . However, there are a multitude of factors that also contribute to onset of symptoms, where mechanical overload has been shown to be an important risk factor [28][29][30][31][32][33][34] . The patellar tendon is an energy-storage tendon that is loaded by jumping; hence why symptoms are called "jumper's knee."…”

Section: Discussionmentioning

confidence: 99%

Characterising the proximal patellar tendon attachment and its relationship to skeletal maturity in adolescent ballet dancersCharacterising the proximal patellar endon attachment and its relationship to skeletal maturity in adolescent ballet dancers

Rudavsky

Cook

Magnusson

et al. 2017

MLTJ

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SummaryBackground: It is unknown how and when the proximal attachment of the patellar tendon matures; puberty may be key in ensuring normal tendon formation. The aim of this study was to investigate the features of the proximal patellar tendon attachment at different stages of skeletal maturity, to help gain an understanding of how and when the tendon attachment matures. Methods: Sixty adolescent elite ballet students (ages 11-18) and eight mature adults participated. Peak height velocity (PHV) estimated skeletal maturity. Ultrasound tissue characterisation (UTC) scan was taken of the left knee and analysed for stability of echopattern. An image-based grading scale for greyscale ultrasound was developed to describe the tendon appearance. Anterior-posterior thickness was measured at the inferior pole of the patella, 1 and 2 centimetres distally. Outcomes were compared with skeletal maturity. Results: Mid-portion patellar tendon thickness increased with skeletal maturity (p=0.001 at 1cm and p=0.007 at 2 cm). There was more variance in structural appearance (greyscale classification and UTC echopattern) in pre and peri-PHV participants. Tendon attachment one-year post PHV appeared similar to mature tendons. Conclusions: Early adolescence was associated with highly variable tendon appearance, whereas the tendon appeared mature after PHV. Adolescence may be a critical time for the formation of normal tendon attachment. Level of evidence: IIb individual cohort study.

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“…Whereas increased knee valgus has been associated with the risk of ACL rupture, 8 investigators have also related decreased sagittal-plane hip and knee movement with ACL rupture, 8 patellofemoral pain, 6 and patellar tendinopathy. 5,7,9 Consequently, relying solely on frontal-plane knee alignment during jumping and landing may underestimate the level of risk associated with these functional tasks.…”

mentioning

confidence: 99%

Agreement Between Visual Assessment and 2-Dimensional Analysis During Jump Landing Among Healthy Female Athletes

Rabin

Einstein

Kozol

2018

Journal of Athletic Training

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Context: Altered movement patterns, including increased frontal-plane knee movement and decreased sagittal-plane hip and knee movement, have been associated with several knee disorders. Nevertheless, the ability of clinicians to visually detect such altered movement patterns during high-speed athletic tasks is relatively unknown.Objective: To explore the association between visual assessment and 2-dimensional (2D) analysis of frontal-plane knee movement and sagittal-plane hip and knee movement during a jump-landing task among healthy female athletes.Design: Cross-sectional study. Setting: Gymnasiums of participating volleyball teams. Patients or Other Participants: A total of 39 healthy female volleyball players (age ¼ 21.0 6 5.2 years, height ¼ 172.0 6 8.6 cm, mass ¼ 64.2 6 7.2 kg) from Divisions I and II of the Israeli Volleyball Association.Main Outcome Measure(s): Frontal-plane knee movement and sagittal-plane hip and knee movement during jump landing were visually rated as good, moderate, or poor based on previously established criteria. Frontal-plane knee excursion and sagittal-plane hip and knee excursions were measured using free motion-analysis software and compared among athletes with different visual ratings of the corresponding movements.Results: Participants with different visual ratings of frontalplane knee movement displayed differences in 2D frontal-plane knee excursion (P , .01), whereas participants with different visual ratings of sagittal-plane hip and knee movement displayed differences in 2D sagittal-plane hip and knee excursions (P , .01).Conclusions: Visual ratings of frontal-plane knee movement and sagittal-plane hip and knee movement were associated with differences in the corresponding 2D hip and knee excursions. Visual rating of these movements may serve as an initial screening tool for detecting altered movement patterns during jump landings.

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Landing Strategies of Athletes with an Asymptomatic Patellar Tendon Abnormality

Cited by 92 publications

References 35 publications

Patellar Tendon Straps Decrease Pain and May Alter Lower Extremity Kinetics in Those With Patellar Tendinopathy During Jump Landing

Patellar Tendon Straps Decrease Pain and May Alter Lower Extremity Kinetics in Those With Patellar Tendinopathy During Jump Landing

Characterising the proximal patellar tendon attachment and its relationship to skeletal maturity in adolescent ballet dancersCharacterising the proximal patellar endon attachment and its relationship to skeletal maturity in adolescent ballet dancers

Agreement Between Visual Assessment and 2-Dimensional Analysis During Jump Landing Among Healthy Female Athletes

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