Podoclínica Guimarães

31/12/2025

Flat feet collapse the tripod base during squats, driving knee valgus (inward collapse), hip impingement, medial knee overload, and compensatory low-back strain up the chain.
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How flat feet disrupt squat mechanics
Without a stable arch, weight shifts medially onto the inner foot, pronating the subtalar joint and internally rotating the tibia/knee into valgus, stressing the medial knee compartment and patellofemoral joint.
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This foot collapse drags the femur inward, pinching the anterior hip capsule/labrum (impingement) and forcing early hip rise or lumbar rounding to maintain balance.
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Upstream compensations
Knee valgus increases medial knee stress (PFPS, MCL strain) while one-sided pronation asymmetry tilts the pelvis, overloading the contralateral QL/low back.
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Hips shoot up early and back rounds because the unstable base leaks power, so the trunk overcompensates to hit depth.
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Optimal tripod squat foot position
Maintain three points: heel center, big toe base, little toe base—spread weight evenly, grip the floor, and keep knees tracking over toes (not midline).
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If any point lifts during descent/ascent, reset: cue arch lift, glute activation, and knee-out pressure to restore chain integrity.

27/12/2025

Cada modalidade desportiva exige palmilhas específicas e calçado diferenciado, em função do piso e do gesto desportivo realizado.

24/12/2025

A PODOCLINICA deseja a todos os pacientes e amigos um Santo e Feliz Natal 🎁🎄

15/12/2025

07/12/2025

26/11/2025

👣 Os pés são verdadeiras "máquinas" de precisão. Cada passo envolve a ação coordenada de cerca de 200 músculos. Mais um motivo para cuidarmos deles com atenção e rigor.

18/08/2025

Study Demonstrates Importance of Plantar Fascia and Windlass in Maintaining Stiffness of Longitudinal Arch of Foot

Finite Element Analysis of Plantar Fascia During Walking: A Quasi-static Simulation

Yen-Nien Chen, MSc, Chih-Wei Chang, MD, MSc, Chun-Ting Li, MSc, Chih-Han Chang, PhD, and Cheng-Feng Lin, PT, PhD

Abstract: The plantar fascia is a primary arch supporting structure of the foot and is often stressed with high tension during ambulation. When the loading on the plantar fascia exceeds its capacity, the inflammatory reaction known as plantar fasciitis may occur. Mechanical overload has been identified as the primary causative factor of plantar fasciitis. However, a knowledge gap exists between how the internal mechanical responses of the plantar fascia react to simple daily activities. Therefore, this study investigated the biomechanical responses of the plantar fascia during loaded stance phase by use of the finite element (FE) modeling.

Methods: A 3-dimensional (3-D) FE foot model comprising bones, cartilage, ligaments, and a complex-shaped plantar fascia was constructed. During the stance phase, the kinematics of the foot movement was reproduced and Achilles tendon force was applied to the insertion site on the calcaneus. All the calculations were made on a single healthy subject.

Results: The results indicated that the plantar fascia underwent peak tension at preswing (83.3% of the stance phase) at approximately 493 N (0.7 body weight). Stress concentrated near the medial calcaneal tubercle. The peak von Mises stress of the fascia increased 2.3 times between the midstance and preswing. The fascia tension increased 66% because of the windlass mechanism.

Conclusion: Because of the membrane element used in the ligament tissue, this FE model was able to simulate the mechanical structure of the foot. After prescribing kinematics of the distal tibia, the proposed model indicated the internal fascia was stressed in response to the loaded stance phase.

Clinical Relevance: Based on the findings of this study, adjustment of gait pattern to reduce heel rise and Achilles tendon force may lower the fascia loading and may further reduce pain in patients with plantar fasciitis.

(Chen YN, Chang CW, Li CT, Chang CH, Lin CF. Finite element analysis of plantar fascia during walking: a quasi-static simulation. Foot & ankle international. 2015 Jan;36(1):90-97.)

https://journals.sagepub.com/.../10.1177/1071100714549189