- Saint Lucia, Queensland, Australia
Study Design: Cross-sectional study of adults with PFP. Background: Aetiology of PFP is multifactorial, with intrinsic factors ranging from proximal and distal deficiencies relative to the knee. In healthy populations, relationships... more
Study Design: Cross-sectional study of adults with PFP.
Background: Aetiology of PFP is multifactorial, with intrinsic factors ranging from proximal and distal deficiencies relative to the knee. In healthy populations, relationships between foot and ankle mobility, and FPPA have been established, however, no studies have explored this relationship in PFP subjects.
Objectives: Evaluate relationship between foot and ankle mobility, frontal plane projection angle (FPPA) and hip adduction angle (HADD) in adults with patellofemoral pain (PFP).
Methods: 69 adults with PFP (subjects: 46 females and 23 males; mean age: 35.4(6.5) years) were assessed for foot and ankle mobility (weight bearing ankle dorsiflexion, midfoot arch height mobility and midfoot width mobility). Subjects were videoed performing 5 single leg squats (SLSq) bilaterally. FPPA and HADD of the SLSq were analysed using a 2-D video analysis system (Neorehab). Multiple linear regression models were used to examine the relationship between foot mobility and frontal plane angles.
Results: Less ankle dorsiflexion range of motion (ROM) was a significant predictor of increased peak FPPA (β-1.189, 95% CI [-1.685 to -0.694], p<0.001) and increased peak HADD (β 0.851, 95% CI [.512 to 1.191], p<0.001). Arch height and midfoot width mobility were not associated with frontal plane angle measures (all p>0.05).
Conclusion: Less ankle mobility is associated with greater FPPA and HADD, Improving ankle dorsiflexion ROM could reduce dynamic knee valgus, improving functional biomechanics for PFP individuals.
Key Words: ankle dorsiflexion, fppa, hadd, ankle dorsiflexion, physical therapy
Background: Aetiology of PFP is multifactorial, with intrinsic factors ranging from proximal and distal deficiencies relative to the knee. In healthy populations, relationships between foot and ankle mobility, and FPPA have been established, however, no studies have explored this relationship in PFP subjects.
Objectives: Evaluate relationship between foot and ankle mobility, frontal plane projection angle (FPPA) and hip adduction angle (HADD) in adults with patellofemoral pain (PFP).
Methods: 69 adults with PFP (subjects: 46 females and 23 males; mean age: 35.4(6.5) years) were assessed for foot and ankle mobility (weight bearing ankle dorsiflexion, midfoot arch height mobility and midfoot width mobility). Subjects were videoed performing 5 single leg squats (SLSq) bilaterally. FPPA and HADD of the SLSq were analysed using a 2-D video analysis system (Neorehab). Multiple linear regression models were used to examine the relationship between foot mobility and frontal plane angles.
Results: Less ankle dorsiflexion range of motion (ROM) was a significant predictor of increased peak FPPA (β-1.189, 95% CI [-1.685 to -0.694], p<0.001) and increased peak HADD (β 0.851, 95% CI [.512 to 1.191], p<0.001). Arch height and midfoot width mobility were not associated with frontal plane angle measures (all p>0.05).
Conclusion: Less ankle mobility is associated with greater FPPA and HADD, Improving ankle dorsiflexion ROM could reduce dynamic knee valgus, improving functional biomechanics for PFP individuals.
Key Words: ankle dorsiflexion, fppa, hadd, ankle dorsiflexion, physical therapy
Research Interests:
A literature review examining conventional proprioceptive interventions (i.e. unstable surface training) and novel proprioceptive interventions (i.e. tactile and vibratory stimulation) of the ankle and foot on measures of proprioception... more
A literature review examining conventional proprioceptive interventions (i.e. unstable surface training) and novel proprioceptive interventions (i.e. tactile and vibratory stimulation) of the ankle and foot on measures of proprioception (i.e. joint position sense, joint movement perception threshold) and balance/postural sway (i.e. center-of-pressure) in young healthy adults and those with FAI or acute ankle injury. Directives for ankle/foot rehabilitation protocols and propositions for future research are included.
Research Interests:
Research Interests:
The anterior cruciate ligament (ACL) is a key ligament in knee stability and balance. The quality of performance during the single-leg squat (SLS) exercise has emerged as an indicator of potential ACL injury risk. Many studies have... more
The anterior cruciate ligament (ACL) is a key ligament in knee stability and balance. The quality of
performance during the single-leg squat (SLS) exercise has emerged as an indicator of potential ACL
injury risk. Many studies have compared SLS performance between men and women, however no
study has compared SLS performance between trained and untrained subjects. Furthermore, no studies
have examined center-of-pressure (COP) stability during performance of the SLS. This study examined
COP stability and frontal-plane knee translation during the SLS in trained and untrained individuals.
Trained individuals demonstrated better COP stability and less frontal plane knee translation in
comparison to untrained subjects. COP stability is related to SLS performance and thus may be
indirectly related to ACL injury risk. Subsequent studies are essential to support these findings.
performance during the single-leg squat (SLS) exercise has emerged as an indicator of potential ACL
injury risk. Many studies have compared SLS performance between men and women, however no
study has compared SLS performance between trained and untrained subjects. Furthermore, no studies
have examined center-of-pressure (COP) stability during performance of the SLS. This study examined
COP stability and frontal-plane knee translation during the SLS in trained and untrained individuals.
Trained individuals demonstrated better COP stability and less frontal plane knee translation in
comparison to untrained subjects. COP stability is related to SLS performance and thus may be
indirectly related to ACL injury risk. Subsequent studies are essential to support these findings.
Research Interests:
Brief epidemiology, patho-physiology, risk factors and directives for patient interview, physical examination, non-surgical and surgical treatment options along with concomitant strength of evidence for successful treatment outcomes.