The Hip and Its Various Injuries

The Hip: A Key Joint for Movement and Body Stability

The hip is one of the most critical joints in the body because it serves as a primary connection point between the trunk and the lower extremities.

Its main function is to facilitate movements such as walking, running, climbing stairs, bending over, or standing. However, it also plays a fundamental role in load distribution and overall body stability.

The hip joint is formed by the articulation between the femoral head and the acetabulum of the pelvis. Although it is a highly stable joint, it requires muscles, tendons, fascia, and the nervous system to work in harmony to maintain efficient movement.

The Hip Does Not Work in Isolation

The hip is often analyzed as an isolated area, but in reality, it is part of a kinetic chain that involves:

• Lumbar spine

• Pelvis

• Glutes

• Deep hip musculature

• Knee

• Ankle

• Foot

When there is a dysfunction in one of these areas, the hip may begin to compensate.

For example:

• Insufficient gluteal activation can destabilize the pelvis and increase the load on the lumbar region or the knee.

• Lack of hip mobility can force other joints to hyper-mobilize to compensate.

The Role of the Gluteal Muscles in Hip Function

The gluteal muscles are essential for joint stability and motor control.

They are involved in the following functions:

• Stabilizing the pelvis during gait

• Controlling hip alignment and positioning

• Assisting in load absorption

• Protecting the lower back and knees

When there is weakness, overload, or poor muscular coordination, discomfort can manifest in different areas, often far from where the dysfunction originated.

Common Hip Injuries and Conditions

The hip can present various conditions depending on the affected tissue structure, the type of mechanical load, and the individual characteristics of each patient.

Bursitis or Lateral Hip Pain

Bursae are small fluid-filled sacs that reduce friction between tissues.

When a bursa becomes irritated or sensitized, pain can develop, typically on the outer side of the hip.

It commonly presents as:

• Pain when lying on the affected side for prolonged periods

• Discomfort while walking

• Tenderness on the lateral aspect of the hip

Currently, clinical consensus views this not merely as "inflammation" but as a complex interplay of factors related to tissue load capacity, sensitivity, and adaptability.

Hip Tendinopathies

Tendons connect muscle to bone and transmit force during physical movement.

When they are subjected to loads that exceed the tissue's adaptive capacity, pain and dysfunction can occur.

Tendinopathies of muscles such as the glutes can cause pain in:

• The lateral aspect of the hip

• The posterior aspect of the hip

• Areas adjacent to the pelvis

Physiotherapy treatment aims to progressively restore the tendon's capacity to tolerate load.

Tensor Fasciae Latae Syndrome

The tensor fasciae latae (TFL) is a muscle located on the lateral side of the hip that contributes to pelvic stability and helps control leg movement during activities such as walking, running, or standing.

When subjected to overload, poor movement mechanics, or improper load distribution, this area can become tense and generate pain.

Critically, pain is not always felt directly in the tensor fasciae latae muscle. Due to its connection to the iliotibial (IT) band—a thick band of connective tissue running down the outside of the thigh—tension can be transmitted to other areas, particularly the lateral aspect of the knee.

Because of this, patients may experience:

• Lateral hip pain

• A sensation of tightness along the outer thigh

• Discomfort radiating down toward the knee

• Pain when walking, running, or climbing stairs

This occurs because the hip, pelvis, and knee operate as a single biomechanical chain. A deficit in hip control can alter knee mechanics and increase load on more distal structures.

Therefore, treating only the site of pain may not be sufficient. A comprehensive assessment must evaluate hip mobility, gluteal activation, pelvic control, and how the entire lower limb distributes forces.

Hip Labral Tears

The labrum is a ring of cartilage that surrounds the socket of the hip joint, helping to secure the femoral head and enhance joint stability.

It can be damaged or torn due to:

• Repetitive microtrauma

• Sports-related movements

• Acute trauma or injury

• Structural biomechanical abnormalities

Symptoms may include:

• Deep hip joint pain

• Groin pain

• A sensation of clicking, catching, or limited range of motion

Hip Dislocation

A dislocation occurs when the head of the femur is forced out of its normal position in the socket (acetabulum). This is typically the result of high-energy trauma.

It can cause:

• Severe acute pain

• Immediate loss of joint mobility

• Compromised joint stability

Physiotherapy rehabilitation targets the following goals:

• Alleviating pain

• Restoring joint range of motion

• Rebuilding muscle strength

• Restoring full joint functionality

Interventions may include:

• Pain and inflammation management using physical modalities, as clinically indicated

• Gentle joint mobilizations and progressive range-of-motion exercises

• Targeted strengthening exercises for the muscles of the hip, pelvis, and lower limb

• Joint stability and balance training

• Gait re-education, with or without assistive devices, based on patient progression

• Proprioceptive training to improve neuromuscular control

• Patient education on joint protection techniques and secondary injury prevention

The treatment plan must be customized to the phase of recovery and medical protocols following the reduction of the dislocation.

Hip Fracture

Hip fractures are serious injuries that require immediate medical and surgical attention.

They are commonly caused by:

• High-impact trauma

• Low-energy falls

• Compromised bone density, such as in osteoporosis

Following medical intervention, physical therapy plays a crucial role in restoring:

• Range of motion

• Muscular strength

• Balance and postural control

• Functional independence

Physiotherapy for Hip Conditions

For all of these conditions, physiotherapy intervention is personalized based on the source of pain, the specific tissues affected, and the patient's stage of recovery.

Treatment plans may utilize:

• Manual therapy

• Myofascial release

• Deep dry needling

• Therapeutic exercise

• Biomechanical assessment and correction

• Advanced modalities such as Percutaneous Electrolysis Therapy (EPTE)

• Pain neuroscience education

Therapeutic exercise remains one of the primary pillars for recovering:

• Gluteal strength

• Pelvic stability

• Movement control

• Progressive load tolerance