Acute and Chronic Subtalar Joint Instability: Does It Really Exist?

Area of Science:

• Orthopedic Surgery
• Sports Medicine
• Biomechanics

Background:

• Subtalar instability frequently coexists with other hindfoot pathologies.
• Diagnosis of isolated subtalar instability is challenging due to limitations in current imaging and clinical assessments.
• A high index of clinical suspicion is crucial for identifying this condition.

Purpose of the Study:

• To highlight the diagnostic challenges associated with acute and chronic subtalar instability.
• To review the current treatment strategies for persistent subtalar instability.
• To discuss the variability and limitations in reported outcomes for subtalar instability.

Main Methods:

• Literature review of diagnostic methods for subtalar instability.
• Analysis of treatment interventions for persistent subtalar instability.
• Evaluation of outcome data from studies on subtalar instability.

Main Results:

• Most imaging modalities and clinical maneuvers demonstrate poor sensitivity for isolated subtalar instability.
• Initial management parallels that of ankle instability.
• Numerous operative interventions exist, but outcomes are inconsistent.

Conclusions:

• Subtalar instability is an underdiagnosed condition requiring heightened clinical awareness.
• Effective management and predictable outcomes for subtalar instability remain areas for further investigation.
• Further research is needed to improve diagnostic accuracy and treatment efficacy.