Trendelenburg gait is an abnormal gait resulting from a defective hip abductor mechanism. The primary musculature involved is the gluteal musculature, including the gluteus medius and gluteus minimus muscles. The weakness of these muscles causes drooping of the pelvis to the contralateral side while walking. The gait gets its name from a German surgeon, Friedrich Trendelenburg, who first reported the test related to this gait in 1895. The physical examination test described by him is useful to uncover hip abductor weakness in a patient with developmental dysplasia of the hip.
Hip joint and its abductor mechanism behave like a class 3 level with the effort and the load on the same side of the fulcrum.
Any pathology of the fulcrum, load, effort or the lever which binds all three will lead to a positive Trendelenburg gait.
Failure of the fulcrum presents in the following conditions:
Osteonecrosis of hip
Developmental dysplasia of the hip
Chronic dislocated hips secondary to trauma
Chronic dislocated hips secondary to infections like tuberculosis of the hip
Failure of the lever is a feature in the following conditions:
Greater trochanteric avulsion
Non-union of the neck of femur
Failure of effort presents in the following conditions:
Superior gluteal nerve damage
Gluteus medius and minimus tendinitis
Gluteus medius and minimus abscess
Post total hip arthroplasty
Trendelenburg gait is a common problem in a patient that has paralysis/paresis of the hip abductors.
The center of gravity of the body passes midway through the pubic symphysis. When one foot lifts off the ground, as during swing phase of the gait cycle, the body remains unsupported on that side, and the pelvis tends to drop to the unsupported side. To prevent the drop, the abductor muscles mainly the gluteus medius and minimus on the supported side contract, providing stabilization of the superimposed trunk. If there is any damage to the hip and its abductor mechanism due to the causes mentioned above, there will be drooping of the pelvis on the opposite side of the pathology.
A patient with a Trendelenburg gait often complains of a limp. The limp can be painful or painless depending on the etiology. If the limp is severe, there is compensatory bending or lurching to the side of pathology to balance the center of gravity of the body. This limp is called the lurching gait. When the pathology is bilateral, the pelvis droops to the unsupported side alternating with each step and is called a waddling type of gait. This gait, when present, provides clues regarding certain possible etiologies, such as non-union of the neck of femur and developmental dysplasia of the hip.
On physical examination of gait, the lurching or waddling type of gait patterns should alert the physician to examine the abductor mechanism of the hip more closely.
Mild Trendelenburg gait may be difficult to appreciate while examining the patient with full clothing. It is necessary to perform a Trendelenburg test to evaluate further.
To perform the test, the examiner sits or stands behind the patient. The patient is then asked to lift each foot off the ground, and the opposite side pelvis is elevated as high as possible alternately for at least 30 seconds.  This modification was suggested by Hardcastle et al. and is now practiced worldwide as a standard practice. In healthy individuals, the unsupported side stays at the same level or rises slightly. When the abductor mechanism is weak, the pelvis drops towards the unsupported side. In case of more serious weakness, the patient leans towards the affected side. This dropping of the pelvis in the standing position suggests a positive Trendelenburg test.
The prerequisites for doing the test are as follows:
The patient should have a painless hip pathology. In case of a painful hip condition, the patient will not be able to balance leading to spurious results.
The must not have abduction or adduction (coronal plane) deformities of the hip. Presence of adductor deformity at the hip leads to elevation of the pelvis leading to the false negative result. Presence of abductor deformity at the hip leads to drooping of the pelvis on the contralateral side leading to the false positive result.
Limitations of the Trendelenburg test:
Kendall et al. have shown that hip abductor weakness induced by superior gluteal nerve block does not correlate with the pelvis drop mainly in athletes and in patients who are asymptomatic but have hip pathology.
In a patient with early stages of osteonecrosis, in spite of having an abductor mechanism defect Trendelenburg sign and therefore gait remain masked.
Pelvis drop can occur even in healthy individuals with normal abductor mechanism when the abductor muscle is not working adequately.
Detailed physical examination should be carried out to diagnose the condition leading to the abnormal gait. Other investigations include X-rays, ultrasonography, computed tomography (CT) scans and magnetic resonance imaging (MRI) to diagnose the primary condition. Blood tests may be performed to corroborate with the radiological findings.
The main focus of the treatment after identification of the etiology involves correction of the etiological factor resulting in the Trendelenburg gait and varies according to the pathology.
Trendelenburg gait by itself wears the hip joint, and appropriate treatment is essential.
Patients who have abductor weakness after an arthroplasty require specific exercises which include:
Non-weight bearing standing abduction
Weight-bearing standing abduction
Resisted side stepping exercises
Weight-bearing exercises have been shown to have a better functional recovery than non-weight bearing exercises.
Alteration of the gait pattern after gait training can also compensate for the hip abductor weakness.
Trendelenburg gait must be differentiated from other gait patterns including the following:
A thorough history and physical examination are essential to rule out other types of abnormal gait patterns.
Trendelenburg gait can be treated efficiently irrespective of the etiology. Timely detection of altered gait, prompt diagnosis and effective treatment of the primary condition are essential for a good outcome.
Chronic untreated abnormal Trendelenburg gait may lead to the development of secondary pathology at the knees or ankles over the years. It is also known to accelerate the process of wear and tear at the hip joint. The wear and tear usually occur at the portions of the hip which are typically not used during normal gait, more so in athletes. Untreated Trendelenburg gait can also lead to dynamic lower extremity valgus.
Pathology can be in the fulcrum, lever or the effort arm of the abductor mechanism.
The Hardcastle modification of Trendelenburg eliminates false positive results.
History and physical examination and investigations guide the workup of a patient with Trendelenburg gait.
Depending on the etiology the following consultations are essential:
Ps need to be aware of the Trendelenburg gait and other abnormal gait patterns and should seek medical treatment promptly which can prevent irreversible damage to the hip joint.
A patient-centric multidisciplinary approach is essential while managing a patient with Trendelenburg gait. This team includes the primary care physician, orthopedic specialists, nursing, and may also include physical therapists and/or a chiropractor, all working in an interdisciplinary team approach. Patients need to follow up with the therapist and orthopedic nurse for many months because recovery is gradual. For benign causes, full recovery is possible but if there is permanent nerve damage, a persistent limp may develop.
We are looking for contributors to author, edit, and peer review our vast library of review articles and multiple choice questions. In as little as 2-3 hours you can make a significant contribution to your specialty. In return for a small amount of your time, you will receive free access to all content and you will be published as an author or editor in eBooks, apps, online CME/CE activities, and an online Learning Management System for students, teachers, and program directors that allows access to review materials in over 500 specialties.
This is an academic project designed to provide inexpensive peer-reviewed Apps, eBooks, and very soon an online CME/CE system to help students identify weaknesses and improve knowledge. We would like you to consider being an author or editor. Please click here to learn more. Thank you for you for your interest, the StatPearls Publishing Editorial Team.
Click Your Answer Below
Would you like to access teaching points and more information on this topic?
Click Your Answer Below
Would you like to access teaching points and more information on this topic?
|Trendelenburg F, Trendelenburg's test: 1895. Clinical orthopaedics and related research. 1998 Oct; [PubMed]|
|Henderson ER,Marulanda GA,Cheong D,Temple HT,Letson GD, Hip abductor moment arm--a mathematical analysis for proximal femoral replacement. Journal of orthopaedic surgery and research. 2011 Jan 25; [PubMed]|
|Caviglia H,Cambiaggi G,Vattani N,Landro ME,Galatro G, Lesion of the hip abductor mechanism. SICOT-J. 2016; [PubMed]|
|Hardcastle P,Nade S, The significance of the Trendelenburg test. The Journal of bone and joint surgery. British volume. 1985 Nov; [PubMed]|
|Kendall KD,Schmidt C,Ferber R, The relationship between hip-abductor strength and the magnitude of pelvic drop in patients with low back pain. Journal of sport rehabilitation. 2010 Nov; [PubMed]|
|Youdas JW,Madson TJ,Hollman JH, Usefulness of the Trendelenburg test for identification of patients with hip joint osteoarthritis. Physiotherapy theory and practice. 2010 Apr 22; [PubMed]|
|Siegel KL,Kepple TM,Stanhope SJ, A case study of gait compensations for hip muscle weakness in idiopathic inflammatory myopathy. Clinical biomechanics (Bristol, Avon). 2007 Mar; [PubMed]|
|Duffy CM,Hill AE,Cosgrove AP,Corry IS,Mollan RA,Graham HK, Three-dimensional gait analysis in spina bifida. Journal of pediatric orthopedics. 1996 Nov-Dec; [PubMed]|
|Hewett TE,Myer GD,Ford KR,Heidt RS Jr,Colosimo AJ,McLean SG,van den Bogert AJ,Paterno MV,Succop P, Biomechanical measures of neuromuscular control and valgus loading of the knee predict anterior cruciate ligament injury risk in female athletes: a prospective study. The American journal of sports medicine. 2005 Apr; [PubMed]|
|Leetun DT,Ireland ML,Willson JD,Ballantyne BT,Davis IM, Core stability measures as risk factors for lower extremity injury in athletes. Medicine and science in sports and exercise. 2004 Jun; [PubMed]|
The intent of StatPearls is to provide practice questions and explanations to assist you in identifying and resolving knowledge deficits. These questions and explanations are not intended to be a source of the knowledge base of all of medicine, nor is it intended to be a board or certification review of Surgery-Orthopaedic. The authors or editors do not warrant the information is complete or accurate. The reader is encouraged to verify each answer and explanation in several references. All drug indications and dosages should be verified before administration.
StatPearls offers the most comprehensive database of free multiple-choice questions with explanations and short review chapters ever developed. This system helps physicians, medical students, dentists, nurses, pharmacists, and allied health professionals identify education deficits and learn new concepts. StatPearls is not a board or certification review system for Surgery-Orthopaedic, it is a learning system that you can use to help improve your knowledge base of medicine for life-long learning. StatPearls will help you identify your weaknesses so that when you are ready to study for a board or certification exam in Surgery-Orthopaedic, you will already be prepared.
Our content is updated continuously through a multi-step peer review process that will help you be prepared and review for a thorough knowledge of Surgery-Orthopaedic. When it is time for the Surgery-Orthopaedic board and certification exam, you will already be ready. Besides online study quizzes, we also publish our peer-reviewed content in eBooks and mobile Apps. We also offer inexpensive CME/CE, so our content can be used to attain education credits while you study Surgery-Orthopaedic.