Hip Labral Disorders: Difference between revisions

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<div class="noeditbox">Welcome to [[Vrije Universiteit Brussel Evidence-based Practice Project|Vrije Universiteit Brussel's Evidence-based Practice project]]. This space was created by and for the students in the Rehabilitation Sciences and Physiotherapy program of the Vrije Universiteit Brussel, Brussels, Belgium. Please do not edit unless you are involved in this project, but please come back in the near future to check out new information!!</div> <div class="editorbox">
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'''Original Editor '''- [[User:Karolyn Conolty|Karolyn Conolty]], [[User:Kenny Bosmans|Kenny Bosmans]]
'''Original Editor '''- [[User:Karolyn Conolty|Karolyn Conolty]], [[User:Kenny Bosmans|Kenny Bosmans]]  


'''Lead Editors''' &nbsp; 
'''Lead Editors'''- [[User:Scott Buxton|Scott Buxton]]
</div>  
</div>  
== Search Strategy ==
== &nbsp;<br>Definition/Description ==


add text here related to databases searched, keywords, and search timeline <br>
Hip labral disorders are pathologies which cause pain due to damage the acetabular labrum. In most cases this is caused by a tear in the labrum but it can also be caused by a dislocation, misalignment from bony structures ore a not optimal angle of the caput femoris.  
 
== Definition/Description  ==
 
Hip labral disorders are pathologies which cause pain due to damage the acetabular labrum. In most cases this is caused by a tear in the labrum but it can also be caused by a dislocation, misalignment from bony structures ore a not optimal angle of the caput femoris.


== Clinically Relevant Anatomy  ==
== Clinically Relevant Anatomy  ==
Line 18: Line 14:
== Epidemiology /Etiology  ==
== Epidemiology /Etiology  ==


The labrum is susceptible to traumatic injury from shearing forces that occur with twisting, pivoting and falling. The most common mechanism is an external rotation force in a hyperextended position.In some cases pain develops over time. It is believed the microtraumata are responsible of the labral lasions in these cases.<br>[[Hip_Dysplasia|Hip dysplasia]] is an important risk factor. Hip dysplasia is a general term used to describe certain abnormalities of the femur or the acetabulum, or both that result in inadequate containment of the femoral head within the acetabulum. A shallow acetabulum, a femoral or acetabular anteversion, and a decreased head offset or perpendicular distance from the center of the femoral head to the axis of the femoral shaft are a few of those bony abnormalities.<br><br>
The labrum is susceptible to traumatic injury from shearing forces that occur with twisting, pivoting and falling. The most common mechanism is an external rotation force in a hyperextended position.In some cases pain develops over time. It is believed the microtraumata are responsible of the labral lasions in these cases.<br>[[Hip Dysplasia|Hip dysplasia]] is an important risk factor. Hip dysplasia is a general term used to describe certain abnormalities of the femur or the acetabulum, or both that result in inadequate containment of the femoral head within the acetabulum. A shallow acetabulum, a femoral or acetabular anteversion, and a decreased head offset or perpendicular distance from the center of the femoral head to the axis of the femoral shaft are a few of those bony abnormalities.<br><br>  


== Characteristics/Clinical Presentation  ==
== Characteristics/Clinical Presentation  ==


Patients with pain deep in the groin, instability of the hip, a "clicking" or "locking" feeling and stiffness of the hip might be suffering from an acetabular labral tear. These symptoms can increase when the patient's bearing weight or performing twisting movements of the hip. Pain may also occur while climbing stairs. Most patients (90%)<ref name="Groh et al">Groh M,Herrera J. “A comprehensive review of hip labral tears.” Curr Rev Musculoskelet Med 2009;2:105-117</ref>&nbsp;diagnosed with acetabular labral tears have had complaints of pain in the anterior hip or groin. This can be an indication for an anterior labral tear, whereas buttock pain is more consistent with posterior tears and less common.&nbsp;<ref name="Groh et al" />
Patients with pain deep in the groin, instability of the hip, a "clicking" or "locking" feeling and stiffness of the hip might be suffering from an acetabular labral tear. These symptoms can increase when the patient's bearing weight or performing twisting movements of the hip. Pain may also occur while climbing stairs. Most patients (90%)<ref name="Groh et al">Groh M,Herrera J. “A comprehensive review of hip labral tears.” Curr Rev Musculoskelet Med 2009;2:105-117</ref>&nbsp;diagnosed with acetabular labral tears have had complaints of pain in the anterior hip or groin. This can be an indication for an anterior labral tear, whereas buttock pain is more consistent with posterior tears and less common.&nbsp;<ref name="Groh et al" />  


<br>Labral tears have been classified into 4 types:<br> - radial flap: most common, disruption of free margin of the labrum<br> - radial fibrillated: fraying of the free margin, associated with degenerative joint disease<br> - longitudinal peripheral: least common<br> - abnormally mobile: can result from a detached labrum<br>
<br>Labral tears have been classified into 4 types:<br> - radial flap: most common, disruption of free margin of the labrum<br> - radial fibrillated: fraying of the free margin, associated with degenerative joint disease<br> - longitudinal peripheral: least common<br> - abnormally mobile: can result from a detached labrum<br>  


== Differential Diagnosis<br>  ==
== Differential Diagnosis<br>  ==


A variety of pathologies have to be taken into account when facing hip pain. In most cases this pain is situated in the anterior hip or goin region. Some patients might also complain about pain in the lateral region or deep in the posterior buttocks, but this is less common. Pain in the hip region van be due to hip joint contusion, strain, athlethis pubalgia, osteitis pubis, inflammatory arthritis, osteoarthritis, septic arthritis, piriformis syndrome, snapping hip syndrome, bursitis, femoral head avascular necrosis, fracture, dislocation, tumor, hernia, slipped femoral capital epiphysis, Legg-Calve-Perthes disease, or referred pain from the lumbosacral and sacroiliac areas.&nbsp;<ref name="Schmerl et al">Schmerl M, Pollard H, Hoskins W. “Labral injuries of the hip: a review of diagnosis and management.” J Manipulative Physiol Ther. 2005;28(8):632.</ref>
A variety of pathologies have to be taken into account when facing hip pain. In most cases this pain is situated in the anterior hip or goin region. Some patients might also complain about pain in the lateral region or deep in the posterior buttocks, but this is less common. Pain in the hip region van be due to hip joint contusion, strain, athlethis pubalgia, osteitis pubis, inflammatory arthritis, osteoarthritis, septic arthritis, piriformis syndrome, snapping hip syndrome, bursitis, femoral head avascular necrosis, fracture, dislocation, tumor, hernia, slipped femoral capital epiphysis, Legg-Calve-Perthes disease, or referred pain from the lumbosacral and sacroiliac areas.&nbsp;<ref name="Schmerl et al">Schmerl M, Pollard H, Hoskins W. “Labral injuries of the hip: a review of diagnosis and management.” J Manipulative Physiol Ther. 2005;28(8):632.</ref>  


== Diagnostic Procedures  ==
== Diagnostic Procedures  ==


Imaging from plain radiographs, computed tomography (CT) and magnetic resonance imaging (MRI) are rather useless when identifying labral tears. The magnetic resonance arthrography (MRa) on the other hand is proven to be more succesful.<ref name="Groh et al" /> MRa uses a dye injection into the hip capsule before imaging several planes with an MR. Although an MRa can give some indications for labral tears, studies have indicated that the sensitivity and specificity of the test varies. Diagnosis is there for best based on the combination of MRa, physical examination and arthroscopy. Arthroscopy is considered the golden standard and can be used for diagnostic as well as therapeutic means.<ref name="Groh et al" />
Imaging from plain radiographs, computed tomography (CT) and magnetic resonance imaging (MRI) are rather useless when identifying labral tears. The magnetic resonance arthrography (MRa) on the other hand is proven to be more succesful.<ref name="Groh et al" /> MRa uses a dye injection into the hip capsule before imaging several planes with an MR. Although an MRa can give some indications for labral tears, studies have indicated that the sensitivity and specificity of the test varies. Diagnosis is there for best based on the combination of MRa, physical examination and arthroscopy. Arthroscopy is considered the golden standard and can be used for diagnostic as well as therapeutic means.<ref name="Groh et al" />  


== Outcome Measures  ==
== Outcome Measures  ==
Line 42: Line 38:
Hip labral disorders can be diagnosed during a thorough physical examination. In some cases the first signs can be spotted while observing the patient. During a brief walk the knee on the side of the affected hip might be slightly bend to absorb the shocks and lowering the weight bearing on that side. the step length of the affected leg may also be shortened to lower the pain.&nbsp;Aside from simple observation there are a number of provocative tests that can be performed. Because each test stresses a particular part of the acetabular labrum, they can also give an indication of where the tear is located.  
Hip labral disorders can be diagnosed during a thorough physical examination. In some cases the first signs can be spotted while observing the patient. During a brief walk the knee on the side of the affected hip might be slightly bend to absorb the shocks and lowering the weight bearing on that side. the step length of the affected leg may also be shortened to lower the pain.&nbsp;Aside from simple observation there are a number of provocative tests that can be performed. Because each test stresses a particular part of the acetabular labrum, they can also give an indication of where the tear is located.  


<br>
<br>  


for the [http://www.physio-pedia.com/index.php5?title=McCarthy_test McCarthy test], both hips have to be in a flexed position. The affected hip needs to be brought into extension. If this movement reproduces a painful click, the patient is suffering from a labral tear.<ref name="McCarty et al">McCarthy JC, Noble P, Schuck M, Alusio FV, Wright J, Lee J. “Acetabular and labral pathology.” In: McCarthy JC, editor. Early hip disorders. New York7 Springer Verlag; 2003. p. 113-33.</ref>  
for the [http://www.physio-pedia.com/index.php5?title=McCarthy_test McCarthy test], both hips have to be in a flexed position. The affected hip needs to be brought into extension. If this movement reproduces a painful click, the patient is suffering from a labral tear.<ref name="McCarty et al">McCarthy JC, Noble P, Schuck M, Alusio FV, Wright J, Lee J. “Acetabular and labral pathology.” In: McCarthy JC, editor. Early hip disorders. New York7 Springer Verlag; 2003. p. 113-33.</ref>  


The flexion-abduction-external rotation test(FABER) test elicates 88% of the patient with an articular pathology, But the FABER test didn’t find any correlation between the pisitive test result and the tipes of hip joint pathology.
The flexion-abduction-external rotation test(FABER) test elicates 88% of the patient with an articular pathology, But the FABER test didn’t find any correlation between the pisitive test result and the tipes of hip joint pathology.  


To identify an anterior labral tear, the patient's leg has to be brought into full flexion, lateral rotation and full abduction. Then the leg has to be extended with medial rotation and adduction. Patients with an anterior labral tear will experience sharp catching pain and in some cases there might be a "clicking" of the hip.  
To identify an anterior labral tear, the patient's leg has to be brought into full flexion, lateral rotation and full abduction. Then the leg has to be extended with medial rotation and adduction. Patients with an anterior labral tear will experience sharp catching pain and in some cases there might be a "clicking" of the hip.  


<br>
<br>  


A posterior Labral tear is identified by bringing the patient's leg into extension, abduction and lateral rotation followed by an extension with medial rotation and adduction of the leg. Sharp catching pain with or without a "click" will be an indication for a posterior labral tear.
A posterior Labral tear is identified by bringing the patient's leg into extension, abduction and lateral rotation followed by an extension with medial rotation and adduction of the leg. Sharp catching pain with or without a "click" will be an indication for a posterior labral tear.  


== Medical Management <br> ==
== Medical Management <br> ==


The most commen treatment uses anti-inflammatory drugs. Hip Labral Disorders can also be treated with débridement or with churgical ripair. There is a bioabsorbeble suture angor placed witch is needed to stabilize the fibrocartilaginous tissue back to the rim of the acetabulum when the labrum is detached from the bone. The goal of this artoscopic theatment is to releave the pain by eliminating the unstable flap tear that causes this discomfort. Pelvic osteotomies is a surgical treatment that is used when the alignment of the bone structures isn’t optimal. Due to this misalignment of the socket, witch is usually created by a disease during childhood the hip is going to wear out prematurely. When the angel of the caput femoris isn’t optimal a femoral osteotomy can be done. A femoral osteotomy is a surgical treatment where the femur is cut and angled differently in an attempt to improve the mechanics of the leg. As last resort an arthodesis can be used. Witch this churgical treatment an artificial induction of joint ossification is placed between two bones. <br><br>
The most commen treatment uses anti-inflammatory drugs. Hip Labral Disorders can also be treated with débridement or with churgical ripair. There is a bioabsorbeble suture angor placed witch is needed to stabilize the fibrocartilaginous tissue back to the rim of the acetabulum when the labrum is detached from the bone. The goal of this artoscopic theatment is to releave the pain by eliminating the unstable flap tear that causes this discomfort. Pelvic osteotomies is a surgical treatment that is used when the alignment of the bone structures isn’t optimal. Due to this misalignment of the socket, witch is usually created by a disease during childhood the hip is going to wear out prematurely. When the angel of the caput femoris isn’t optimal a femoral osteotomy can be done. A femoral osteotomy is a surgical treatment where the femur is cut and angled differently in an attempt to improve the mechanics of the leg. As last resort an arthodesis can be used. Witch this churgical treatment an artificial induction of joint ossification is placed between two bones. <br><br>  


== Physical Therapy Management <br>  ==
== Physical Therapy Management <br>  ==


So far there has been no research on the efficacy of hip mobilization or manipulation in the treatment of labral disorders. Although it is suggested that the therapy should focus on optimizing the alignment of the hip joint and the precision of joint motion, avoiding pivoting motions and correcting gait patterns.&nbsp;<ref name="Schmerl et al" /><ref name="Lewis et al" /><br>
So far there has been no research on the efficacy of hip mobilization or manipulation in the treatment of labral disorders. Although it is suggested that the therapy should focus on optimizing the alignment of the hip joint and the precision of joint motion, avoiding pivoting motions and correcting gait patterns.&nbsp;<ref name="Schmerl et al" /><ref name="Lewis et al" /><br>  


== Key Research  ==
== Key Research  ==


add links and reviews of high quality evidence here (case studies should be added on new pages using the [[Template:Case Study|case study template]])<br>
add links and reviews of high quality evidence here (case studies should be added on new pages using the [[Template:Case Study|case study template]])<br>  


Austin A, Meyer J, Powers C, Souza R. Identification of abnormal hip motion associated with acetabular labral pathology. J Orthop Sports Phys Ther. 2008;38(9):558-565.<br>
Austin A, Meyer J, Powers C, Souza R. Identification of abnormal hip motion associated with acetabular labral pathology. J Orthop Sports Phys Ther. 2008;38(9):558-565.<br>  


Steadman Hawkins Research Foundation, Vail, Colorado, USA. New frontiers in hip arthroscopy: the role of arthroscopic hip labral repair and capsulorrhaphy in the treatment of hip disorders. Instr Course Lect. 2006;55:309-16.
Steadman Hawkins Research Foundation, Vail, Colorado, USA. New frontiers in hip arthroscopy: the role of arthroscopic hip labral repair and capsulorrhaphy in the treatment of hip disorders. Instr Course Lect. 2006;55:309-16.  


== Resources <br>  ==
== Resources <br>  ==
Line 74: Line 70:
Groh M, Herrera J. A comprehensive review of hip labral tears. Curr Rev Musculoskelet Med 2009;2:105-117  
Groh M, Herrera J. A comprehensive review of hip labral tears. Curr Rev Musculoskelet Med 2009;2:105-117  


<br>


Enseki K, Martin R, Draovitch P, Kelly B, Philippon M, Shunker M. The hip joint: Arthroscopic procedures and postoperative rehabilitation. J Orthop Sports Phys Ther. 2006;36(7):516-525.


Enseki K, Martin R, Draovitch P, Kelly B, Philippon M, Shunker M. The hip joint: Arthroscopic procedures and postoperative rehabilitation. J Orthop Sports Phys Ther. 2006;36(7):516-525.
<br>
 
 
 
Lewis CL, Sahrmann SA. Acetabular labral tears. Physical Therapy. 2006;89:110-21.
 


Lewis CL, Sahrmann SA. Acetabular labral tears. Physical Therapy. 2006;89:110-21.


Schmerl M, Pollard H, Hoskins W. Labral Injuries of the hip: a review of diagnosis and management. J Manipulative Physiol Ther. 2005;28(8):632.
<br>


== Clinical Bottom Line  ==
Schmerl M, Pollard H, Hoskins W. Labral Injuries of the hip: a review of diagnosis and management. J Manipulative Physiol Ther. 2005;28(8):632.


add text here <br>  
== &nbsp;<br> ==


== Recent Related Research (from [http://www.ncbi.nlm.nih.gov/pubmed/ Pubmed])  ==
== Recent Related Research (from [http://www.ncbi.nlm.nih.gov/pubmed/ Pubmed])  ==
Line 104: Line 98:
Enseki K, Martin R, Draovitch P, Kelly B, Philippon M, Schenker M. The hip joint: Arthroscopic procedures and postoperative rehabilitation. J Orthop Sports Phys Ther. 2006;36(7):516-525.<br>  
Enseki K, Martin R, Draovitch P, Kelly B, Philippon M, Schenker M. The hip joint: Arthroscopic procedures and postoperative rehabilitation. J Orthop Sports Phys Ther. 2006;36(7):516-525.<br>  


[[Category:Vrije_Universiteit_Brussel_Project|Template:VUB]]     [[Category:Hip]] [[Category:EIM_Residency_Project]] [[Category:Musculoskeletal/Orthopaedics]]
[[Category:Vrije_Universiteit_Brussel_Project|Template:VUB]] [[Category:Hip]] [[Category:EIM_Residency_Project]] [[Category:Musculoskeletal/Orthopaedics]]

Revision as of 11:26, 30 July 2013

Original Editor - Karolyn Conolty, Kenny Bosmans

Lead Editors- Scott Buxton

 
Definition/Description
[edit | edit source]

Hip labral disorders are pathologies which cause pain due to damage the acetabular labrum. In most cases this is caused by a tear in the labrum but it can also be caused by a dislocation, misalignment from bony structures ore a not optimal angle of the caput femoris.

Clinically Relevant Anatomy[edit | edit source]

The labrum of the hip is responsible for deepening the acetabulum to provide increased joint stability. It contains nerve endings to enhance proprioception, but may also be a source of pain.

Epidemiology /Etiology[edit | edit source]

The labrum is susceptible to traumatic injury from shearing forces that occur with twisting, pivoting and falling. The most common mechanism is an external rotation force in a hyperextended position.In some cases pain develops over time. It is believed the microtraumata are responsible of the labral lasions in these cases.
Hip dysplasia is an important risk factor. Hip dysplasia is a general term used to describe certain abnormalities of the femur or the acetabulum, or both that result in inadequate containment of the femoral head within the acetabulum. A shallow acetabulum, a femoral or acetabular anteversion, and a decreased head offset or perpendicular distance from the center of the femoral head to the axis of the femoral shaft are a few of those bony abnormalities.

Characteristics/Clinical Presentation[edit | edit source]

Patients with pain deep in the groin, instability of the hip, a "clicking" or "locking" feeling and stiffness of the hip might be suffering from an acetabular labral tear. These symptoms can increase when the patient's bearing weight or performing twisting movements of the hip. Pain may also occur while climbing stairs. Most patients (90%)[1] diagnosed with acetabular labral tears have had complaints of pain in the anterior hip or groin. This can be an indication for an anterior labral tear, whereas buttock pain is more consistent with posterior tears and less common. [1]


Labral tears have been classified into 4 types:
- radial flap: most common, disruption of free margin of the labrum
- radial fibrillated: fraying of the free margin, associated with degenerative joint disease
- longitudinal peripheral: least common
- abnormally mobile: can result from a detached labrum

Differential Diagnosis
[edit | edit source]

A variety of pathologies have to be taken into account when facing hip pain. In most cases this pain is situated in the anterior hip or goin region. Some patients might also complain about pain in the lateral region or deep in the posterior buttocks, but this is less common. Pain in the hip region van be due to hip joint contusion, strain, athlethis pubalgia, osteitis pubis, inflammatory arthritis, osteoarthritis, septic arthritis, piriformis syndrome, snapping hip syndrome, bursitis, femoral head avascular necrosis, fracture, dislocation, tumor, hernia, slipped femoral capital epiphysis, Legg-Calve-Perthes disease, or referred pain from the lumbosacral and sacroiliac areas. [2]

Diagnostic Procedures[edit | edit source]

Imaging from plain radiographs, computed tomography (CT) and magnetic resonance imaging (MRI) are rather useless when identifying labral tears. The magnetic resonance arthrography (MRa) on the other hand is proven to be more succesful.[1] MRa uses a dye injection into the hip capsule before imaging several planes with an MR. Although an MRa can give some indications for labral tears, studies have indicated that the sensitivity and specificity of the test varies. Diagnosis is there for best based on the combination of MRa, physical examination and arthroscopy. Arthroscopy is considered the golden standard and can be used for diagnostic as well as therapeutic means.[1]

Outcome Measures[edit | edit source]

add links to outcome measures here (also see Outcome Measures Database)

Examination [1][2][3][edit | edit source]

Hip labral disorders can be diagnosed during a thorough physical examination. In some cases the first signs can be spotted while observing the patient. During a brief walk the knee on the side of the affected hip might be slightly bend to absorb the shocks and lowering the weight bearing on that side. the step length of the affected leg may also be shortened to lower the pain. Aside from simple observation there are a number of provocative tests that can be performed. Because each test stresses a particular part of the acetabular labrum, they can also give an indication of where the tear is located.


for the McCarthy test, both hips have to be in a flexed position. The affected hip needs to be brought into extension. If this movement reproduces a painful click, the patient is suffering from a labral tear.[4]

The flexion-abduction-external rotation test(FABER) test elicates 88% of the patient with an articular pathology, But the FABER test didn’t find any correlation between the pisitive test result and the tipes of hip joint pathology.

To identify an anterior labral tear, the patient's leg has to be brought into full flexion, lateral rotation and full abduction. Then the leg has to be extended with medial rotation and adduction. Patients with an anterior labral tear will experience sharp catching pain and in some cases there might be a "clicking" of the hip.


A posterior Labral tear is identified by bringing the patient's leg into extension, abduction and lateral rotation followed by an extension with medial rotation and adduction of the leg. Sharp catching pain with or without a "click" will be an indication for a posterior labral tear.

Medical Management
[edit | edit source]

The most commen treatment uses anti-inflammatory drugs. Hip Labral Disorders can also be treated with débridement or with churgical ripair. There is a bioabsorbeble suture angor placed witch is needed to stabilize the fibrocartilaginous tissue back to the rim of the acetabulum when the labrum is detached from the bone. The goal of this artoscopic theatment is to releave the pain by eliminating the unstable flap tear that causes this discomfort. Pelvic osteotomies is a surgical treatment that is used when the alignment of the bone structures isn’t optimal. Due to this misalignment of the socket, witch is usually created by a disease during childhood the hip is going to wear out prematurely. When the angel of the caput femoris isn’t optimal a femoral osteotomy can be done. A femoral osteotomy is a surgical treatment where the femur is cut and angled differently in an attempt to improve the mechanics of the leg. As last resort an arthodesis can be used. Witch this churgical treatment an artificial induction of joint ossification is placed between two bones.

Physical Therapy Management
[edit | edit source]

So far there has been no research on the efficacy of hip mobilization or manipulation in the treatment of labral disorders. Although it is suggested that the therapy should focus on optimizing the alignment of the hip joint and the precision of joint motion, avoiding pivoting motions and correcting gait patterns. [2][3]

Key Research[edit | edit source]

add links and reviews of high quality evidence here (case studies should be added on new pages using the case study template)

Austin A, Meyer J, Powers C, Souza R. Identification of abnormal hip motion associated with acetabular labral pathology. J Orthop Sports Phys Ther. 2008;38(9):558-565.

Steadman Hawkins Research Foundation, Vail, Colorado, USA. New frontiers in hip arthroscopy: the role of arthroscopic hip labral repair and capsulorrhaphy in the treatment of hip disorders. Instr Course Lect. 2006;55:309-16.

Resources
[edit | edit source]

Groh M, Herrera J. A comprehensive review of hip labral tears. Curr Rev Musculoskelet Med 2009;2:105-117


Enseki K, Martin R, Draovitch P, Kelly B, Philippon M, Shunker M. The hip joint: Arthroscopic procedures and postoperative rehabilitation. J Orthop Sports Phys Ther. 2006;36(7):516-525.


Lewis CL, Sahrmann SA. Acetabular labral tears. Physical Therapy. 2006;89:110-21.


Schmerl M, Pollard H, Hoskins W. Labral Injuries of the hip: a review of diagnosis and management. J Manipulative Physiol Ther. 2005;28(8):632.

 
[edit | edit source]

Recent Related Research (from Pubmed)[edit | edit source]

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References[edit | edit source]

References will automatically be added here, see adding references tutorial.

  1. 1.0 1.1 1.2 1.3 1.4 Groh M,Herrera J. “A comprehensive review of hip labral tears.” Curr Rev Musculoskelet Med 2009;2:105-117
  2. 2.0 2.1 2.2 Schmerl M, Pollard H, Hoskins W. “Labral injuries of the hip: a review of diagnosis and management.” J Manipulative Physiol Ther. 2005;28(8):632.
  3. 3.0 3.1 Lewis CL, Sahrmann SA. “Acetabular labral tears.” Physical Therapy. 2006;86:110–21.
  4. McCarthy JC, Noble P, Schuck M, Alusio FV, Wright J, Lee J. “Acetabular and labral pathology.” In: McCarthy JC, editor. Early hip disorders. New York7 Springer Verlag; 2003. p. 113-33.

Martin R, Enseki K, Draovitch P, Trapuzzano T, Philippon M. Acetabular labral tears of the hip: Examination and diagnostic challenges. J Orthop Sports Phys Ther. 2006:36(7):503-515.

Enseki K, Martin R, Draovitch P, Kelly B, Philippon M, Schenker M. The hip joint: Arthroscopic procedures and postoperative rehabilitation. J Orthop Sports Phys Ther. 2006;36(7):516-525.