Sports Medicine: Just the Facts

(やまだぃちぅ) #1

  • Chromolyn sodium is rarely effective when used alone
    and tends to be quite expensive in the required dosages.


Moderate to Severe Symptoms



  • Athletes who require second-line medications should
    be further evaluated.

  • Addition of a second medication listed above

  • Addition of inhaled corticosteroid (budesonide, fluti-
    casone) or beta-agonist/corticosteroid combinations
    (Advair-Glaxo Wellcome).

    • Inhaled corticosteroid is effective in alleviating the
      postexercise cough brought on by late phase inflam-
      matory effects of EIA.



  • Doping control:Care must be taken to ensure compli-
    ance with doping control measures in elite level skiers.

  • Most asthma medications are restricted and appropri-
    ate procedures for documenting their use is required.
    Recently, the International Olympic Committee (IOC)
    and FIS have begun requiring documented testing of
    these athletes prior to the use of asthma medications.

  • The USADA hotline is a useful resource for any ques-
    tions regarding the use of these medications (1-800-
    223-0393).


COMMON MUSCULOSKELETAL PROBLEMS


SACROILIITIS



  • Pathophysiology:The sacroiliac(SI) joint is a bicon-
    cave articulation of the hemipelvis to the sacrum. It
    has relatively small rotational motion but functions
    primarily to transmit force from the lower extremity
    to the spine. Sacroiliac dysfunction is the most
    common cause of low back pain in the skier.

  • Injury can result from direct trauma associated with a
    fall, but more commonly arises from repetitive load-
    ing. Contributing factors in this injury include SI joint
    hypermobility, excessive shear forces, and relative
    core strength deficits.

  • Clinical features:Symptoms stem from inflammation
    in the SI joint and include local pain at the SI joint that
    is exacerbated with walking, running, or skiing.

  • The athlete will often have associated lateral hip pain
    and pain at the gluteal prominance. Radicular symp-
    toms are unusual and are associated with piriformis
    spasm, facet irritation, or concomitant disk disease.

  • Examination will typically reveal the following:
    Tenderness at the SI joint and relative hypomobility on
    the effected side with a standing knee to chest test
    •FABER test (flexion, abduction, and external rotation)
    will usually elicit symptoms. Neurologic examination
    is normal.

  • Diagnostic testing: Radiographs may demonstrate
    arthrosis or degenerative disease of the lower spine.

    • Treatment:Pain relief strategies include oral anal-
      gesics/anti-inflammatory medications, chiropractic
      treatment, ice, massage, and stretching.

    • Long-term management aims at improving SI func-
      tion through core stabilization and muscle balance
      training (Thera-ball program, Pilates, or similar).
      •Technique and equipment issues should also be
      reviewed.




GREATERTROCHANTERBURSITIS


  • See detailed description in chapter 57.
    RETROPATELLARKNEEPAIN(PATELLOFEMORAL
    DYSFUNCTION)/ILLIOTIBIALBANDFRICTION
    SYNDROME

  • See detailed descriptions in chapters 60 and 61 respec-
    tively.


EXERTIONALANTERIORCOMPARTMENTSYNDROME


  • Pathophysiology:In cross-country skiers, exertional
    compartment syndrome(ECS) typically effects the ante-
    rior or lateral compartments representing injury to the
    tibialis anterior or peroneus brevis muscles respectively.

  • ECS is precipitated by exercise induced swelling of
    the soft tissue in the confined compartment leading to
    ischemic pain in the effected muscle.

  • This is most common in skating technique where the
    foot is dorsiflexed and everted during ski recovery.

  • This injury was very prevalent when the technique was
    first introduced due to the excessive length of the ski
    and relatively soft binding used with the classic stride.
    As equipment has been developed specifically for the
    skating technique, this has become less common. It is
    now most commonly seen with the use of combination
    equipment (designed for both skating and classic tech-
    nique) and with poorly fitting equipment.

  • Clinical features:See detailed description of symp-
    toms in chapters 22 and 63.

  • Diagnostic testing:Pre- and postexercise compart-
    ment pressure testing may be helpful although it is
    difficult to reproduce the specific conditions of skiing
    in the laboratory (see chapter 22).

  • Treatment:Includes decreasing compartment inflam-
    mation using anti-inflammatory medications and
    improving function through a balanced stretching and
    strengthening program.

  • Equipment modifications should be made to utilize a
    skating specific boot-binding-ski system. A stiffer
    binding and shorter ski may also help.

  • In resistant cases a surgical fasciotomy may be neces-
    sary (see chapter 63).


PERONEUSTENDONINJURY


  • Pathophysiology:Injury to the peroneus tendon can
    occur with an acute inversion dorsiflexion injury or


478 SECTION 6 • SPORTS-SPECIFIC CONSIDERATIONS

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