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Association between leg length discrepancy and posterior tibial tendon dysfunction
Jose Antônio Veiga Sanhudo1, Joao Luiz Ellera Gomes
1Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
Foot & Ankle Specialist
|February 15, 2014
Summary
Leg length discrepancy (LLD) is more common and severe in individuals with posterior tibial tendon dysfunction (PTTD). LLD may predispose individuals to developing PTTD due to biomechanical changes.
Area of Science:
- Orthopedics
- Biomechanics
- Podiatry
Background:
- Leg length discrepancy (LLD) is linked to orthopedic issues and altered gait biomechanics.
- LLD may cause posterior tibial tendon (PTT) overload, suggesting a potential link with PTT dysfunction (PTTD).
Purpose of the Study:
- To compare LLD frequency and magnitude in subjects with and without PTTD.
- To investigate associations between clinical features and PTTD presence.
Main Methods:
- A case-control study comparing 118 patients with PTTD to 118 matched controls.
- LLD was measured using scanography (radiographic or CT).
Main Results:
- LLD prevalence was significantly higher in the PTTD group (94.9%) versus controls (79.7%).
- Mean absolute LLD (5.64 mm vs. 3.28 mm) and relative LLD (7.36% vs. 4.18%) were greater in the PTTD group (P < .001).
Conclusions:
- A significant relationship exists between LLD and PTTD.
- LLD may be a predisposing factor for PTTD development due to induced biomechanical changes.
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