Movement at the ankle is controlled by two joints. The ankle or talocrural joint is formed from the tibia and fibula of the lower leg and talus of the foot. Functionally, it acts as a hinge, allowing dorsiflexion (pulling the foot upwards towards the lower leg) and plantarflexion (pulling the foot downwards away from the lower leg). Eversion (tilting of the sole of the foot away from the midline) and inversion (tilting of the sole of the foot inwards towards the midline) is controlled by the subtalar joint formed between the talus and calcaneus bones of the foot.
Tight hips can stem from multiple things, so I recommend you see a physical therapist, physiotherapist, or personal trainer to help identify the actual issue. Like I mentioned before, your hip flexors may be tight because they are shortened and weakened from desk jockeying all day, or maybe your workout is leading to a muscular imbalance. Perhaps your back is weak and some muscles are pulling double duty, creating extra tension. There’s also a good chance your core is weak and your glutes are underdeveloped.
Tight hip flexors occur for a variety of reasons. Those who run frequently or engage in other activities that put strain on the hip flexors are likely to experience hip flexor tightness at one time or another. A blow to the hip or poor conditioning can also be causes of tight hip flexors. These causes can usually be attributed to tiny tears that occur to our hip flexors through rigorous activity.
Your skeletal, smooth and cardiac muscles work together to keep your body running like a machine. Within this muscular system there are various parts, from muscle fibers to ligaments. You may know about hamstrings, quadriceps and abdominal muscles, but there hundreds of muscles that move within your body. Some are involuntary, like parts of your digestive system, while you control others whenever you go for a walk or lift weights.
Tight hip flexors can also make it harder for your glutes to activate—since they're opposing muscle groups, when one is really tight the other becomes lengthened. When a muscle is more lengthened than it should be, it takes away some of its ability to contract. When your glutes are in this compromised position, it can cause other muscles to do more work than they should, making your workouts less efficient and sometimes, increasing your risk of injury.