What conditions can lead to a ‘groin’ pull?
Brian Yee PT, MPhty, OCS, FAAOMPT
‘Groin pulls’ typically are due to over-compensation and poor mechanics in the legs and core stability. Groin pulls comprise mostly of the adductor muscles of the inner thigh. These injuries usually occur with sports that requie cutting, pivoting and side to side movement such as soccer, lacrosse, and football. It can also occur in runners and cyclists when the hip is required to be used in situations like uphill terrain.
Strength deficits with these injuries are not necessarily in the adductor muscles, but instead from the posterior hip muscles – gluteus maximus and medius. The gluteus maximus and medius are the key stabilizing muscles for the hip to be able to plant and pivot off the leg. When the gluteal muscles are not strong enough to stabilize the hip, the adductor muscles are used to compensate. Anatomically, the adductor muscles are primarily designed to pull the hip inwards, but many people do not realize that the adductor muscles also have a role in extending the hip. As the gluteal muscles should extend the hip to push off, run, climb, the adductor muscles can be used instead – and with time groin strains occur due to overuse.
Groin pulls can also happen due to poor foot contact. Especially if someone is more flat footed or pronated, it causes the knee to draw inwards when you step through it. In this position, the adductor muscles are in a better mechanical advantage to stabilize the hip than the gluteal muscles. Again, groin pulls can occur due to repetition in a poorly aligned position.
Differential diagnosis of ‘sports hernia’, nerve referred pain – primarily from the obturator nerve, sacroiliac joint dysfunction, internal pain from the hip such as arthritis, or referred pain from your internal organs should also be considered as they all commonly refer to the groin.