The joints serve as the convergence spot of two or more bones. When it comes to the hip joint, it is the femur which connects to the pelvis. When standing, the femur suspends in a direct manner from the pelvis which is a position called hip extension. When a step is taken, the individual lifts the thigh and moves the leg in front, reducing the angle between the femur and the pelvis. Take note that this action flexes the hip joint. As for hyperextension, it works in the opposite manner in which the femur moves past the straight, extended position to move behind the body.
Hyperextension is one of the movements of the body that is utilized in various functions. On the other hand, excess stress or strain can result to pain that can disrupt with the activities of the individual whether at home or in the workplace.
Muscles responsible for extending the hip
In order to move the thigh from a flexion position to extension, the hip extensors are used. These are situated on the rear side of the body which include the gluteus maximus and the upper fibers of the hamstrings. Take note that these muscles move the thigh way beyond extension into hyperextension. If there is weakness among these muscles, it will prevent the full extension of the hip.
Muscles which stretch to extend the hip
Once the muscles on the rear of the hip and upper thigh contract to extend the hip, the muscles on the front of the hip should stretch. The main muscle group that should stretch includes the iliopsoas which is a strong hip flexor. This muscle helps prevent the extension of the hip while at the same time pulls the upper part of the pelvis forward. Once the pelvis is tipped, it places a substantial amount of strain on the lumbar vertebrae and can result to low back pain and diminished movement. By enrolling in a first aid class today, you will learn the measures to perform in order to effectively manage back pain.
Problems with the hip structure
Aside from weak hip extensors and tightened hip flexors, there are various ligaments that limit hip hyperextension. It is important to note that the hip is comprised of external ligaments – pubofemoral ligament, iliofemoral ligament and ischiofemoral ligament. One of the main functions of these three ligaments particularly the iliofemoral ligament is to prevent the hyperextension of the hip.
What are the degrees of hyperextension?
Due to the ligaments of the hip, the normal range of hyperextension starts from 0 to 15 degrees. Once the leg moves way beyond this degree of hyperextension, most of the movement comes from the lumbar spine, not from the hip anymore. In order to neutralize this tendency when assessing the degree of hip hyperextension, therapists will stabilize the lower back so that movement will originate from the hip.