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Physical Therapy Approach to Low Back Pain Lumbar Stabilization Stacey Franz, DO, MSPT Medical Director, NorthEast Spine & Sports Medicine Disclosures • I have NO RELEVANT financial disclosures How our core supplies stability • Promote muscle stiffness to control segmental translation – segmental stability is dependent on recruitment of the deep local stability muscles • Anticipatory recruitment prior to functional loading provides protective stiffness • Proximal stability for movement of extremities • Generates force to control, limit range of motion – Concentric action through the range of motion – isometric action to hold position – Eccentrically control the return Anatomy of the Core – Lumbar Muscles • Muscles – Transversospinalis group • Rotatores, Interspinales, Intertransversarii, Multifidi – Erector spinae • Iliocostalis, Longissimus, Spinalis – Latissmus dorsi – Quadratus lumborus • Physiology – Poor mechanical contribution to movement production – Primarily Type I fibers = segmental stabilization – Optimal for proprioceptive feedback *Multifidi most important muscle in this group * Anatomy of the Core – Abdominal Muscles • Muscles – Transversus abdominus – External obliques – Internal obliques • Physiology – Provide sagittal, frontal & transverse plane stabilization – Transversus abdominus • increases intra-abdominal pressure = dynamic stab. against rotational, translational stress • Necessary for anticipatory control – Activates prior to movement of the limbs or trunk to increase stability of the spine, prevent unwanted trunk movement (Cresswell 1994) • Activity contributes to spinal control (Cresswell 1992, Hodges 1999) – Attach to thoracolumbar fascia = add tension w/ contraction Anatomy of the Core – Hip Muscles • Muscles – Psoas – Glut medius – Glut maximus – Hamstrings • Physiology – Psoas tightness can be problematic • can lead to reciprocal inhibition of glut maximus, multifidus, erector spinae, internal oblique, TA – lead to Extensor mechanism dysfunction • increase shear and compressive forces at L4-L5 junction Anatomy of the Core – Hip Muscles (continued) • Physiology – Glut medius weakness • increase frontal and transversus plane stress at patella-femoral joint and tibiofemoral joint – synergistic dominance of TFL & quadratus lumboru – Glut maximus • Decreased activity can lead to pelvic instability, decreased neuromuscular control – Hamstrings What happens to the core when we have low back pain? • Inefficient muscular stabilization – Pain leads to inhibition of muscle control (Stokes & Young 1984, Hides et al. 1994) – Motor control deficit associated with delayed timing or recruitment deficiency (Hodges & Richardson 1996) – Transversus abdominus shows decreased ability to contract in patients with recurrent low back pain (Hodges 1997, Ferreira 2004) • Impairs our anticipatory control • Impairs our spinal control (Cresswell 1992, Hodges 1999) What happens to the core when we have low back pain? (continued) • Weakness and muscle fatigue – Multifidi atrophy in patients with chronic LBP – In unilateral acute/ subacute LBP, there is 31% side to side difference with atrophy of affected side - 3% in controls (Richardson 1999) – Decreased endurance of extensors (Jorgensen 1987, Ebenbichler 2001) – Abnormal flexor to extensor strength ratios (McGill 2002, Siolie 2001 – Decrease in muscle integrity results in lack of control of segmental translation What happens to the core when we have low back pain? (continued) • Decreased spine proprioception – Multifidi atrophy in those with LBP • Proprioception partly from multifidi (Bogduk 1997, Hides 2004) – Difficulty repositioning into neutral spine posture (O’Sullivan 2003) • Loss of control of neutral joint position – Postural control shown to be altered in patients with chronic LBP (Ebenbichler 2001) • Single leg stance balance • Postural stability tests (Mok 2004) – Unexpected balance challenges • Trunk perturbation (Wilder 1996) How Does Core Stabilization help Low Back Pain • Multifidi activation improves pain in acute and chronic LBP (Hides 1996, O’Sullivan 1997) – Multifidi dysfunction does not correct automatically when pain resolves but specific training can correct dysfunction – Segmental stabilization training with co-contraction of Transversus abdominus and Multifidi • Abdominal bracing training stiffens the spine and improves stability (Grenier 2007) • Exercise, in general, beneficial for low back – Slows degenerative conditions – Enhances nutritional benefits to spine Lumbar Stabilization Concepts • What does it entail: • Recruitment of proximal trunk & girdle muscles • Ability of agonists, antagonists, synergists, to work • efficiently & interdependently Facilitates balanced muscular functioning of the entire kinetic chain • How does it translate functionally: • Enhances neuromuscular control/ efficiency throughout • • • the kinetic chain Optimizes postural alignment & dynamic postural control Affect arthrokinematics around lumbo-pelvic-hip complex Promote dynamic strength Lumbar Stab. Concepts (continued) • Neutral vs. Dynamic Stabilization • “Neutral spine stabilization” introduced in 1980s – Position of comfort where muscular support reduces stress on painful structures • “Dynamic stabilization” introduced in 1990s – more functional; multi-planar requiring – acceleration & stabilization interest increased after Joe Montana returns to football after lumbar spine surgery Assessment of the Core • Muscle strength – Manual muscle testing – Straight leg lowering test • Muscle endurance – Erector spinae assessment • Functional testing – Isokinetic testing – Balance testing – Power testing (i.e. medicine ball throws) – Jump tests – Sport specific, functional tests Program Prescription • Be mindful of pain generators – Flexion vs. Extension vs. Neutral program • Exercises that span the spectrum of muscle contraction – Concentric (force production) – Eccentric (force reduction) – Isometric (dynamic stabilization) • Exercises that span body positioning – Supine – Prone – Quadruped – Sitting Program Prescription (continued) • Progression should include additional reps rather than duration of hold • Should challenge the patient by progression through function continuum – Slow to fast – Simple to complex – Low force to high force – Eyes open to eyes closed – Static to dynamic • Quality, not Quantity – Poor technique and neuromuscular control results in poor motor patterns & stabilization Level 1 - Stabilization • Supine • Diaphragmatic breathing • Abdominal bracing • Pelvic tilts • Arm lift • Leg lifts • Opposite arm lift/ leg lift • Marching • Bridging w/ arms at sides • Bridging w/ arms at 90 degrees • Bridging with marching Level 1 – Abdominal Draw In • Mechanism: – Activates the TA (Richardson 1999, Hodges 1996, Urquhart 2005) – Re-trains co-contraction of the deep transversus abdominis with contraction of the deep fascicles of multifidi (Jull 1999, Richardson 1999) • Technique: – “Breath in and out. Gently and slowly draw in your lower abdomen below your navel without moving your upper stomach, back or pelvis” (Urquhart 2005) • Must be breathing properly – optimal muscule activation cannot be achieved when holding breath Level 1 – Abdominal Bracing • Mechanism: – Co-contraction of abdominal wall muscles for greater stability • greater external oblique activity than other abdominal muscles (Urquhart 2005) – Lateral flaring of abdominal wall (Kennedy 1980) – Increase of intra-abdominal pressure (Kennedy 1980) • Technique: – Breath in and out. Gently and slowly swell out your waist without drawing your abdomen inwards or moving your back or pelvis (Urquhart 2005) Level 1 – Pelvic Tilts • Mechanism: – Reduces lumbar lordosis (Vezina 2000) – Muscle activation – Internal oblique > rectus abdominus, external oblique (EO) (Urquhart 2005) – Rectus abdominus> lateral abdominals (Richardson 2005) – External oblique> Rectus abdominus (Vezina 2000) – Similar Internal oblique and Rectus abdominus (Flint 1965, Carman 1972) • Technique: – Lie supine with knees bent and feet flat on the floor – Gently rock the pelvis backward as if pushing your back into the floor Level 1 – Stabilization (continued) • Prone • Finding neutral • Glut sets • Arm lift • Leg extension • Opposite arm lift/ leg lift • Quadruped • Cat camel to find neutral • Rocking to find neutral forward/ backward • Single arm raise • Single leg extension • Opposite arm raise/ leg extension • Kneeling • Finding neutral Level 1 – Stabilization (continued) • Sitting • Finding neutral • Single arm lift • Single leg extension • Marching • Opposite arm/ leg lift (leg extended) • Opposite arm/ leg lift (marching) • Standing • finding neutral • Wall slide Level 1 - Stabilization • ? Level 2 – Stabilization • Supine • Partial, diagonal curls • Single leg lowering • Opposite arm/ leg lowering\Bridging with leg extension • Bridging with one leg • Prone • Single/ double arm lowering (w/ Roman chair) • Single/ double leg lowering (w/ Roman chair) • Push ups against wall • Push ups with feet farther apart • Push ups on chair • Push ups on floor Level 2 – Stabilization (continued) • Quadruped • Alternate arm/ leg with cuff weights • One arm reach • Kneeling • Rock with arms and weights overhead • With side kicks • Push-pull with sticks • Lifting up and down • Half kneeling to standing • Sitting • Leg lifts • Opposite arm/ leg lift Level 2 – Stabilization (continued) • Standing • Wall slides • Hip flexion with weight cuffs • Double arm overhead with weight cuffs • Lunges • Push-pull with sick (up and down) • Ball pass vs light medicine ball use Level 2 - Stabilization • ? Level 3 – Stabilization • Supine • Double leg lowering withg 5 lb cuff weight • Dead bug with arm/ leg cuff weights • Bridging with calves on ball/ upper back • Bridging with feet on ball • Prone • 2 Arms with 1 leg together • Trunk extension (w/ Roman chair) • Quadruped • 2 Arms with 1 leg together • Standing • Push/ pull with sticks Level 3 - Stabilization • ? Level 4 - Stabilization • ? Summary of Citations and Levels of Evidence • Bogduk N: Clinical Anatomy of the Lumbar Spine and Sacrum. Edinburgh, Churchill Livingstone, 1997 • Carman DJ, Blanton PL, Biggs NL. Electromyographic study of the anterolateral abdominal musculature utilising indwelling electrodes. American Journal of Physical Medicine 1972;51(3):113–29. • Cresswell AG, Grundstrom H, Thorstensson A. Observations on intraabdominal pressure and patterns ofabdominal intramuscular activity in man. Acta Physiologica Scandinavica 1992;144(4): 409–18. • Cresswell AG, Oddsson L, Thorstensson A: The influence of sudden perturbations on trunk muscle activity and intraabdominal pressure while standing. Exp Brain Res 1994;98: 336–341 Summary of Citations and Levels of Evidence • Ebenbichler GR, Oddsson LI, Kollmitzer J, et al: Sensorymotor control of the lower back: Implications for rehabilitation. Med Sci Sports Exerc 2001;33:1889–98 • Ferreira PH, Ferreira ML, Hodges PW: Changes in recruitment of the abdominal muscles in people with low back pain: Ultrasound measurement of muscle activity. Spine 2004;29:2560–6 • Flint MM, Gudgell J. Electromyographic study ofabdominal muscular activity during exercise. The Research Quarterly 1965;36(1): 29–37. • Grenier SG, McGill SM. Quantification of lumbar stability by using 2 different abdominal activation strategies. Arch Phys Med Rehabil. 2007 Jan; 88(1): 54-62 Summary of Citations and Levels of Evidence • Hides J: Paraspinal mechanism and support of the lumbar spine, in: Richardson C (ed): Therapeutic Exercise for Lumbopelvic Stabilization, ed 2. Edinburgh, Churchill Livingstone, 2004, pp 59–74 • Hides JA, Richardson CA, Jull GA: Multifidus muscle recovery is not automatic after resolution of acute, firstepisode low back pain. Spine 1996;21:2763–9\ • Hodges PW, Cresswell A, Thorstensson A. Preparatory trunk motion accompanies rapid upper limb movement. Experimental Brain Research 1999;124(1):69–79. • Hodges PW, Richardson CA, Jull GA. Evaluation of the relationship between laboratory and clinical tests of transversus abdominis function. Physiotherapy Research International 1996a;1(1): 30–40. Summary of Citations and Levels of Evidence • Hodges PW, Richardson CA: Contraction of the abdominal muscles associated with movement of the lower limb. Phys Ther 1997;77:132–42; discussion, 142–34 • Hodges PW, Richardson CA. Inefficient muscular stabilization ofthe lumbar spine associated with low back pain. A motor control evaluation of transversus abdominis. Spine 1996b;21(22): 2640–50. • Jorgensen K, Nicolaisen T: Trunk extensor endurance: Determination and relation to low-back trouble. Ergonomics 1987;30:259 • Kennedy B. An Australian programme for management of back problems. Physiotherapy 1980;66(4):108–11. Summary of Citations and Levels of Evidence • McGill S: Normal and injury mechanics of the lumbar spine, in: Low Back Disorders: Evidence-Based Prevention and Rehabilitation. Champaign, IL, Human Kinetics, 2002, pp 87– 136 • Mok NW, Brauer SG, Hodges PW: Hip strategy for balance control in quiet standing is reduced in people with low back pain. Spine 2004;29:E107–12 ----Bilateral standing on short base with eyes closed – LBP failed 4 times more than controls • O’Sullivan PB, Burnett A, Floyd AN, et al: Lumbar repositioning deficit in a specific low back pain population. Spine 2003;28:1074–9 Summary of Citations and Levels of Evidence • Richardson C, Jull G, Hodges P, et al: Traditional views of the function of the muscles of the local stabilizing system of the spine, in: Therapeutic Exercise for Spinal Segmental Stabilization in Low Back Pain: Scientific Basis and Clinical Approach. Edinburgh, Churchill Livingstone, 1999, pp 21–40 • Richardson CA, Jull GA, Hodges PW, Hides JA. Therapeutic exercise for spinal segemental stabilization in low back pain. Scientific basis and clinical approache. Ediburgh: Churchill Livingston 1999 • Sjolie AN, Ljunggren AE: The significance of high lumbar mobility and low lumbar strength for current and future low back pain in adolescents. Spine 2001;26:2629–36 • Urquhart DM et al. Manual Therapy 10(2005) 144-153 Summary of Citations and Levels of Evidence • Vezina MJ, Hubley-Kozey CL, Egan DA. A review of the muscle activation patterns associated with the pelvic tilt exercise used in the treatment of low back pain. The Journal of Manual and Manipulative Therapy 1998;6(4):191–201. • Vezina MJ, Hubley-Kozey CL. Muscle activation in therapeutic exercises to improve trunk stability. Archives of Physical Medicine and Rehabilitation 2000;81(10):1370–9. • Wilder DG, Aleksiev AR, Magnusson ML, et al: Muscular response to sudden load: A tool to evaluate fatigue and rehabilitation. Spine 1996;21:2628–39