Patellofemoral joint kinetics during squatting in collegiate women athletes

Patellofemoral Joint Forces and Stress During Forward Step-up, Lateral Step-up, and Forward Step-down Exercises

“…Peak PFJRF also was significantly greater during the FSD (51.1  2.7 N/kg) compared to the LSU (44.1  3.4 N/kg; P<.001) and FSU (43.6  2.3 N/kg; P = .023) exercises. Although studies have quantified patellofemoral joint force and stress during various rehabilitation exercises (eg, leg press, squatting, lunging), [14][15][16]34,35,40 the influence of various stepping exercises on patellofemoral joint kinetics has not been described. Therefore, the purpose of the current study was to characterize PFJRF and PFJS during FSU, LSU, and FSD exercises in healthy individuals.…”

Patellofemoral Joint Force and Stress Between a Short- and Long-Step Forward Lunge

“…These findings are consistent with patellofemoral joint force and stress data during the barbell squat from Escamilla et al 12 and Salem and Powers. 25 Escamilla et al 12 reported that patellofemoral joint forces increased until 75° to 80° knee flexion, and then began to plateau or slightly decrease. Salem and Powers 25 reported no significant differences in patellofemoral joint force or stress at 75°, 100°, and 110° knee flexion.…”

“…25 Escamilla et al 12 reported that patellofemoral joint forces increased until 75° to 80° knee flexion, and then began to plateau or slightly decrease. Salem and Powers 25 reported no significant differences in patellofemoral joint force or stress at 75°, 100°, and 110° knee flexion. Therefore, injury risk to the patellofemoral joint may not increase with knee angles between 75° to 110° due to similar magnitudes in patellofemoral joint stress during these knee angles, with the benefit of increased quadriceps, hamstrings, and gastrocnemius activity when training at higher knee angles (75°-110°) compared to lower knee angles (0°-70°).…”

Physiotherapy with and without Superficial Dry Needling Affects Pain and Muscle Strength in Patients with Patellofemoral Pain Syndrome

“…This syndrome is fairly common, and its prevalence is about 25% of the population, with young adults being the most affected [3]. This syndrome is seen to affect both the sexes, but its prevalence is higher in the case of women [4,5]. Studies have shown the high prevalence of this syndrome in runners and athletes who perform jumping movements [3,5].…”

“…This syndrome is seen to affect both the sexes, but its prevalence is higher in the case of women [4,5]. Studies have shown the high prevalence of this syndrome in runners and athletes who perform jumping movements [3,5]. Although there are no confirmed signs and symptoms to diagnose the syndrome, the patients typically suffer from pain in the anterior of the knee due to compression of the patellofemoral joint, which is felt around the patella while performing any sort of physical or sport activity [1,6,7].…”