Trendelenburg Gait

Original Editor - Emma De Moerloose

Top Contributors - Scott Buxton, Glenn Demeyer, Emma De Moerloose, Oyemi Sillo and Olivia Wayteck  

Definition/ Description

The trendelenburg gait is caused by weakness of the hip abductors, mostly the gluteal musculature. This condition makes it difficult to support the body’s weight on the affected side. In a normal gait situation, both legs bears half of the body weight. When the left leg is lifted, the right leg takes the entire weight. If a person walks, during the stance face of the gait, the pelvis tilts, rising on the side not taking weight. But at the pathologic situation when there is a abductor weakness as muscular dystrophies or in poliomyelitis, the pelvis drops instead of rising on the unsupported side.
In an attempt to lessen this effect, a child compensates by leaning over the affected hip. It means that the center of gravity is over the hip and so it reduces the degree of the pelvic drop.
 [1] [2] [3][4][5]

Trendelenburg gait.jpg

See also: Trendelenburg Test

Clinically Relevant Anatomy

The hip joint is composed of acetabulum and the femur head. This structures are surrounded by soft tissues and twenty two active muscles. The muscles provides the stability and the forces for movement of the femur during activity. [6]

Trendelenbrug is described by a neuromuscular weakness of the hip abductors: the gluteus medius and gluteus minimus. The two muscles abduct the hip, they support the opposition of the pelvis and prevents the pelvis from dropping. The upward displacement of the greater trochanter shortens the fibers of the gluteus medius muscle. The fibers will be more horizontal instead vertical. [7][8]

Posterior Hip Muscles.PNG


In the above right video, Muscle Activation During Gait, concentric muscle contraction is indicated in yellow, isometric contraction in orange and eccentric contraction in purple.

Epidemiology/ Etiology

Trendelenburg gait occurs when the patient has to deal with weakness of the abductors of the hip (Musculus gluteus medius). [11] Patients who have significantly shorter height and greater body mass index sustained the Trendelenburg gait.[12] Level of evidence: B.

Trendelenbrug gait is caused by a neuromuscular weakness of the hip abductors or a hip disease.
By the neuromuscular weakness of the hip abductors caused by a damage or a neuronal injury of the superior gluteal nerve. Sometimes a pathologic condition affecting a proximal hip abductor muscles, most of the time the gluteus medius muscle.[13][14]
Trendelenburg gait is also observed in patients with developmental dysplasia of the hip, congenital cox vara, or cox valga secondary to another disorder in example: Legg-Calvé-Perthes desease or slipped capital femoral epiphysis. In those conditions, the abductor muscles are normal but they have a mechanical disadvantage. Patients with Slipped capital femoral emphysis also have muscular weakness that leads to trendelenburg gait.[15][16]

Trendelenburg gait is also seen after medical surgery. By patients with hip replacement, trendelenburg gait can be noticed. During the medical surgery of hip replacement, the gluteus medius muscle must be cut to expose the joint. It leads to a abductor dysfunction, trendelenburg. Level of evidence: 1B.[15]

Characteristics/Clinical Presentation

A trendelenburg gait, in which there is weakness of the hip abductors (gluteus medius muscle), is characterized by trunk shift over the affected hip and is best visualized from behind of in front of the patient. Observation of the patient’s gait from the side enables the examiner to detect stride and step length deficiendies as well as motion of the trunk and lower extremity in the sagittal plane, including the extensor or gluteus maximus lurch in which the patient thrusts the trunk posteriorly to compensate for weak hip extensors (gluteus maximus muscle). Observation from the side also enables detection of ankle dorsiflexor weakness and footdrop leading to inability of the foot to clear the ground, which is compensated for by excessive lower extremity flexion to facilitate foor clearande of the ground (steppage gait).[17]

Differential Diagnosis

Weak hip abductor muscles: no stabilizing effect of these muscles during stance fase. The patient exhibits an excessive lateral list in which the thorax is thrust laterally to keep the center of gravity over the stance leg.[18]
Bilateral weakness of the gluteus medius muscle: the gait shows accentuated side-to-side movement, resulting a wobbling gait or “chorus girl swing”.[19]
Some people compensate this by flexing their trunk over the weightbearing hip.[20]

This disturbance in the gait cycle is frequently observed in children with the development of congenital dislocation of the hip (CDH), dysplasia of the hip (DDH) and congenital coxa vara. Coxa vara can also occur from other disorders such as Legg-Calvé-Perthes disease or slipped capital femoral epiphysis (SCFE) - these are two of the most common causes of hip pain or limp.[21] [22] [23] The Trendelenburg gait can also occur as the result of a neuronal injury. A lesion of the superior gluteal nerve (SGN), which is the main nerve stimulating the hip abductors, can lead to weakness.[24] [25] This nerve also supplies the gluteus medius, gluteus minimus and tensor fascia lata muscles.[26] Other conditions in which a Trendelenberg gait may be observed include muscular dystrophy and hemiplegic cerebral palsy.[27]

Diagnostic Procedures

The Trendelenburg test determines the integrity of hip abductor muscle function. The therapist can use this test when there is no X-ray taken but there are signs of Trendelenburg. The person has to stand on one leg and tilt the other one up. The test is negative when the hip of the leg that is pulled up, will also go up. There is no sign for trendelenburg. When the hip from the leg is pulled up will become lower then the other one, we talk about a positive sign for the trendelenburg test. These persons may have trendelenburg, to be absolutely sure, these persons have to take an X-ray to confirm the trendelenburg pathology.[28]

When pain in the hip is diagnosed, the surgeon will base the diagnose on data obtained vrom clinical and  X-ray assessments. These two data sources will provide an answer to: 

  • The level of the proximal osteotomy
  • The amount of valgus, extension and derotation at the proximal osteotomy
  • The level of the distal osteotomy
  • The amount of varus and lengthening at the distal osteotomy.[29] [30] [31] Level of evidence: B

Outcome Measures


The modified McKay criteria is useful to assess if a patient has Trendelenburg gait. These criteria measure pain symptoms, gait pattern, Trendelenburg sign status, and the range of hip joint movement. Level of evidence: A2

Grade Criteria
Excellent Stable, painless hip; no limp; negative
Trendelenburg sign; full range of movement
Good Stable, painless hip; slight limp; slight
decrease in range of movement
Fair Stable, painless hip; limp; positive
Trendelenburg sign; and limited range of
movement, or a combination of these
Poor Unstable or painful hip or both; positive
Trendelenburg sign

Medical Management

While no treatment modalities currently exist for patients with compensated Trendelenburg gait, medical management can attempt to deal with the causes underlying a Trendelenburg gait. Open reduction and Salter innominate osteotomy (SIO) without preoperative traction is effective in the management of development dysplasia of the hip in children younger than 6 years. [32] Level of evidence: A2

Pelvic support osteotomies cause a significant improvement in outcomes relating to posture, gait and walking tolerance in patients who had untreated congenital dislocations.[33] [34] Level of evidence: B

Osteopathic Manipulative Treatment (OMT) could result in improved gait parameters for individuals with somatic dysfunctions, as measured by a GaitMat II system. Further research is needed to better understand the relationship between somatic dysfunctions and gait deviations. [35] Level of evidence: C

There is a significant difference in the incidence of a positive Trendelenburg gait between surgical approaches, using trochanteric osteotomy or not. This shows the effectiveness of distal trochanteric transfer.[36] Level of evidence: A2

Physical Therapy Management

Trendelenburg gait can result in the development of other pathologies of the bones in the hip and knee such as arthritis or premature wear in the hip joints. Therefore it is of great importance to find out a form of physical therapy that will cause a reduction in the degree of Trendelenburg gait to minimize the secondary injuries. [37] (LoE: 5) [38] (LoE: 2b)

Trendelenburg gait is an abnormal gait caused by weakness of the hip abductors. Therefore, the main purpose of physical therapy with regards to this impairment is to strengthen the abductors of the hip. An appropriate exercise to strengthen the hip abductors is to have the patient lay side-lying on the less affected side and abduct the upper leg towards the ceiling. To make the exercise more challenging, a weight or theraband can be placed around the active limb. Other exercises in the revalidation of Trendelenburg gait include functional closed-chain exercises, lateral step-ups and functional balance exercises. It is also important to strengthen the rest of the leg on the affected side. Level of evidence: D.

Research has shown the importance of strengthening the muscles. Not only the M. gluteus medius, but also the quadriceps and the hamstrings. These increases in strength of the muscles, results in a reduction of the degree of Trendelenburg gait.

The use of an Electromyogram (EMG) reduces the Trendelenburg gait by an average of 29 degrees. The average stride length has been shown to increase from 0,32 ± 0,3m to 0,45 ± 0,2m and the speed of gait has been shown to increase from 1,6 ± 0,4 kmh−1 to 3,1 ± 0,5 kmh−1. [39] (LoE: 4).

During the treatment, EMG biofeedback has been used. As weakness of the gluteus medius muscles is the prime contributor to Trendelenburg gait, the device provides warning tones giving feedback of improper gait through too little gluteus medius activity.
In every day life the therapist isn’t constantly with the patient. So, when the patient walks incorrectly, trunk shift over the affected hip, during the day, the positive effects of the therapy can be reversed.
With this in mind, researchers investigated the usefulness of a two-channel EMG biofeedback training device that patients could wear at home. The conclusion of this study was that the group that used the home training device, showed almost normal gait after two months. This goal is only achievable when patients are doing exercises which strengthen the hip abductors in combination with the two-channel EMG biofeedback device.[38] (LoE: 2b) [40] (LoE: 4) [41] (LoE: 5)

Patients with trendelenburg suffer from abnormal range of motion in hip and trunk. The purpose of the treatment is to increase the range of motion. The people get visual feedback about how the walk. They get advises from the therapists so they will think about you must walk correctly. This kind of treatment is good for increasing the range of motion of the hip and the trunk.[42] (LoE: 4)

Key Research


Clinical Bottom Line

Recent Related Research (from Pubmed)


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  3. Vasudevan P.N., et al. Can trendelenburg's sign be positive if the hip is normal. R.V. Institute of research Ilizarov Technology, Kerala, India. 2BfckLRCAN TRENDELENBURG’S SIGN BE POSITIVE IF THE HIP IS NORMAL ,P. N. VASUDEVAN, K. V. VAIDYALINGAM, P. BHASKARAN NAIR, From the R. V. Institute of Research in Ilizarov Technology, Kerala, India. 2B
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