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Picture

Manual Therapy for AC Joint pain

5/15/2014

2 Comments

 
Picture
General Overview

Acromioclavicular joint (ACJ) injuries are quite prevalent throughout the general population and specifically in the athletic population. In 2012 Harris et al found that ACJ disease was present in 31% of individuals who presented with shoulder pain. (Harris 2012) The ACJ is a synovial joint which connects the distal clavicle to the acromion process. The joint assists the scapulothoracic joint in full rotation to adjust for changing elevation of the humerus. Composite motion of the ACJ and sternoclavicular joint (SCJ) contributes up to 60 degrees of upward elevation, 15-30 degrees of posterior tipping, and 15-25 degrees of external rotation during arm elevation (measuring the motion at the ACJ is difficult and typically not done because the kinematics are not well defined). What we do know is that kinematics at the ACJ affect the "quality and quantity of movement at the scapulothoracic joint." (Neumann 2010) With motion occuring in 3 planes, the ACJ lacks stability and relies on 3 major ligaments for support. The acromioclavicular ligament and coracoclavicular ligaments (conoid and trapezoid) support the joint and resist horizontal stresses and limit superior translation respectively. These ligaments have fascial connections with nearby muscles, specifically the trapezius and deltoid. In a high grade AC joint separation, a clinician will often find these muscles injured as well. The resting position of the ACJ is the arm at the side and the closed packed position is full elevation. Due to the high prevalence of dysfunction, assessing the ACJ needs to be a priority during an initial evaluation with a patient who presents with shoulder pain.

Picture
Manual Therapy

Now that we know more about the ACJ, how can we treat this joint when suspecting hypomobility? Since the ACJ is a planar joint, normal concave/ convex rules of manual therapy do not apply. Therefore, we must use our clinical judgement as to when and why to perform joint mobilization or manipulation. A major factor to consider is the patient's acuity. (The novice clinician should be aware that acute ACJ separations do not require intense manual therapy because of the acuity of their symptoms and the laxity present in the region.) Generally in more acute stages, posterior to anterior ACJ mobilizations in supine with the arm resting at the side are effective (left picture below). Remember, this is the resting position of the joint as well allowing for more mobility. 

As the patient's ROM and strength progresses, more intense manual therapy can be performed. For example, certain patients may only have pain and limitations at end range of motion. To reach full humeral flexion and external rotation at least 30 degrees of upward rotation and 8 degrees of external rotation is needed. (Teece 2007). An example of a more advanced manual technique is a posterior to anterior mobilization at end range using the arm as a lever. In this position, the therapist's hand blocks movement of the distal clavicle so that acromion is mobilized on the stabilized clavicle. Small oscillations of the humerus are made at the end-range promoting movement at the ACJ.                

There are many more mobilization and manipulative techniques and positions that can be performed at the ACJ. Hopefully this post gave you an insight into a beginner and a advanced mobilization technique.

-Jim   

Picture
AP or PA mobilization with the arm in neutral
Picture
Anterior mobilization with arm elevation
References:
Harris, Kevin D., Gail D. Deyle, Norman W. Gill, and Robert R. Howes. "Manual Physical Therapy for Injection-
     Confirmed Nonacute Acromioclavicular Joint Pain." Journal of Orthopaedic & Sports Physical Therapy 42.2 (2012): 
     66-80. Print.

Neumann, Donald A. Kinesiology of the Musculoskeletal System: Foundations for Physical Rehabilitation. St. Louis: 
      Mosby, 2002. N. pag. Print

Teece, Rachael M., Jason B. Lunden, Angela S. Lloyd, Andrew P. Kaiser, Cort J. Cieminski, and Paula M. Ludewig. 
     "Three-Dimensional Acromioclavicular Joint Motions During Elevation of the Arm." Journal of Orthopaedic & Sports 
     Physical Therapy 38.4 (2008): 181-90. Print.
2 Comments
Katie
6/11/2017 11:46:29 am

This article is very helpful and succint! My DPT program didn't spend much time on the AC joint so this is a great resource.

Reply
Addie link
2/10/2021 03:40:03 am

Nice blogg

Reply



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  • Home
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  • Resources
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    • Business Minded Sports Physio Podcast
    • Day in the Life of a Sports PT
    • Residency Corner
    • Special Tests >
      • Cervical Spine >
        • Alar Ligament Test
        • Bakody's Sign
        • Cervical Distraction Test
        • Cervical Rotation Lateral Flexion Test
        • Craniocervical Flexion Test (CCFT)
        • Deep Neck Flexor Endurance Test
        • Posterior-Anterior Segmental Mobility
        • Segmental Mobility
        • Sharp-Purser Test
        • Spurling's Maneuver
        • Transverse Ligament Test
        • ULNT - Median
        • ULNT - Radial
        • ULNT - Ulnar
        • Vertebral Artery Test
      • Thoracic Spine >
        • Adam's Forward Bend Test
        • Passive Neck Flexion Test
        • Thoracic Compression Test
        • Thoracic Distraction Test
        • Thoracic Foraminal Closure Test
      • Lumbar Spine/Sacroiliac Joint >
        • Active Sit-Up Test
        • Alternate Gillet Test
        • Crossed Straight Leg Raise Test
        • Extensor Endurance Test
        • FABER Test
        • Fortin's Sign
        • Gaenslen Test
        • Gillet Test
        • Gower's Sign
        • Lumbar Quadrant Test
        • POSH Test
        • Posteroanterior Mobility
        • Prone Knee Bend Test
        • Prone Instability Test
        • Resisted Abduction Test
        • Sacral Clearing Test
        • Seated Forward Flexion Test
        • SIJ Compression/Distraction Test
        • Slump Test
        • Sphinx Test
        • Spine Rotators & Multifidus Test
        • Squish Test
        • Standing Forward Flexion Test
        • Straight Leg Raise Test
        • Supine to Long Sit Test
      • Shoulder >
        • Active Compression Test
        • Anterior Apprehension
        • Biceps Load Test II
        • Drop Arm Sign
        • External Rotation Lag Sign
        • Hawkins-Kennedy Impingement Sign
        • Horizontal Adduction Test
        • Internal Rotation Lag Sign
        • Jobe Test
        • Ludington's Test
        • Neer Test
        • Painful Arc Sign
        • Pronated Load Test
        • Resisted Supination External Rotation Test
        • Speed's Test
        • Posterior Apprehension
        • Sulcus Sign
        • Thoracic Outlet Tests >
          • Adson's Test
          • Costoclavicular Brace
          • Hyperabduction Test
          • Roos (EAST)
        • Yergason's Test
      • Elbow >
        • Biceps Squeeze Test
        • Chair Sign
        • Cozen's Test
        • Elbow Extension Test
        • Medial Epicondylalgia Test
        • Mill's Test
        • Moving Valgus Stress Test
        • Push-up Sign
        • Ulnar Nerve Compression Test
        • Valgus Stress Test
        • Varus Stress Test
      • Wrist/Hand >
        • Allen's Test
        • Carpal Compression Test
        • Finkelstein Test
        • Phalen's Test
        • Reverse Phalen's Test
      • Hip >
        • Craig's Test
        • Dial Test
        • FABER Test
        • FAIR Test
        • Fitzgerald's Test
        • Hip Quadrant Test
        • Hop Test
        • Labral Anterior Impingement Test
        • Labral Posterior Impingement Test
        • Long-Axis Femoral Distraction Test
        • Noble Compression Test
        • Percussion Test
        • Sign of the Buttock
        • Trendelenburg Test
      • Knee >
        • Anterior Drawer Test
        • Dial Test (Tibial Rotation Test)
        • Joint Line Tenderness
        • Lachman Test
        • McMurray Test
        • Noble Compression Test
        • Pivot-Shift Test
        • Posterior Drawer Test
        • Posterior Sag Sign
        • Quad Active Test
        • Thessaly Test
        • Valgus Stress Test
        • Varus Stress Test
      • Foot/Ankle >
        • Anterior Drawer
        • Calf Squeeze Test
        • External Rotation Test
        • Fracture Screening Tests
        • Impingement Sign
        • Navicular Drop Test
        • Squeeze Test
        • Talar Tilt
        • Tarsal Tunnel Syndrome Test
        • Test for Interdigital Neuroma
        • Windlass Test