Introduction to biomechanics


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Ankle Sprains - A Physical Therapists Perspective

Introduction Sprained ankles are one of the
leading causes of athletes to miss gamesImmediate care following ankle sprain -
during the season. Many times they are tapedFollowing a turned ankle, it is difficult to
up & rushed back to the field without properdetermine the severity based on a number of
rehabilitation. More often than not, thefactors. Swelling may occur immediately
ankle gets re-injured or worse, they end upmaking the injury seem worse than it actually
with a knee, hip or low back injury. Theseis. If the ankle does not swell, this does
injuries can be prevented by providing thenot necessarily minimize the possibility of
proper healing time and rehabilitation. Thetorn ligaments. Tenderness will usually be
same premise holds true for non-athletes. Ipresent on the outside of the ankle with an
have worked with a number of patients thatinversion sprain. It also may be difficult
have had multiple ankle sprains that wereto stand on the injured foot. The safest
never given the opportunity to fullyadvice would be to keep the shoe/sneaker tied
rehabilitate. The most common complaint istight to prevent the ankle from swelling.
that their ankle turns over at any timeKeep the weight off the foot as much as
without warning. All it takes is a slightpossible. When the shoe is taken off, the
bend in the pavement and the ankle turns.leg should be elevated above the heart and an
This type of injury is frustrating and canice pack should be compressed against the
become debilitating. This article discussesankle. This will help decrease both the pain
the different types of ankle sprains, what toand swelling. This technique is called
do following a sprain, and what doesR.I.C.E standing for Rest, Ice, Compression,
rehabilitation of the ankle involve? BriefElevation. R.I.C.E is a good pneumonic for
Anatomy The ankle is made up of three primaryany injury to the extremities. Should I go to
bones. The tibia & fibula, which are thethe hospital? If you are having difficulty
longs bones of the lower leg and the talusputting weight on the foot, if the swelling
which is a major bone of the foot. Togetheris severe, and the pain has not reduced after
they make up the talocrural joint. Thea few hours of using the R.I.C.E technique, a
mobility of these bones allows the foot tovisit to the hospital is recommended.
flex and extend which is required forPrepare to wait in the emergency room for a
propulsion during walking. The other majorwhile. Ankle sprains are not usually treated
joint of the ankle is formed by the loweras a priority. The doctor will examine the
portion of the talus and the upper portion ofankle looking for joint and ligament
the calcaneus (heel bone). These two bonesinstabilities. He/She may also order an
form what is called the subtalar joint, whichX-ray to check for fractures. On occasion,
allows for movement in and out (inversionan MRI will be ordered to assess ligament
eversion). This inversion motion is the mostdamage.Physical Therapy/Rehabilitation It is
common mechanism of injury. The ligamentscommon following an ankle sprain to be placed
are tissues that connect bone to bone. Theiron crutches. More severe sprains are placed
function is to provide stability to thein a boot or air cast to help with ankle
joint. There are three main ligaments on thestability. There are four major categories
outside of the ankle called the lateralof impairments that occur following an ankle
collateral ligaments. Their function is tosprain. These include 1. Ankle joint
prevent the ankle from inverting too far.instability due to weakened ligamentous
The inside of the ankle is protected by thestructures 2. Muscle weakness 3. Poor
deltoid ligament, which functions to preventbalance (proprioception) 4. Pain and
excessive eversion or turning out.Mechanismswelling. Each of these impairments must be
of injury - The most typical ankle sprain isaddressed for a successful rehabilitation.
an inversion sprain. This occurs when thePhysical therapists will utilize various
ankle turns inward and the bodies weightmassage techniques and modalities to reduce
compresses the ankle brining the lateralinflammation. Manual therapy techniques will
malleolus close to the floor. This excessivebe used to restore normal joint mechanics and
movement places the lateral ligaments onto retrain the proper muscle firing patterns
strain, stretches the tendons crossing thenecessary for stability. An effort is
joint and can also lead to some of the tarsalrequired to normalize your walking (gait) as
bones compressing on one another. Thequickly as possible to prevent compensations.
greater the inversion force results in a moreFinally, a specific strengthening program
severe ankle sprain or fracture. For thethat incorporates the entire lower extremity
purposes of this article, I will only beand core muscles is provided to improve
covering ankle sprains, not fractures. Whatoverall strength, balance and coordination.
is the difference between a sprain and aEach ankle sprain is different from the next
strain? This is a common question. A sprain& everybody heals at a different rate.
results from a stress placed upon a ligament.Typically, rehabilitation following an ankle
Remember a ligament connects one bone tosprain can be as short as two weeks (4
another bone. A sprain is a partial or fullvisits) up to eight weeks (20 visits). This
tear in the ligament or at the junction ofdoes not take into account any other
where the ligament attaches to the bone. Aco-morbidities.Conclusion Ankle sprains if
strain results from an excessive force ormanaged properly through physical therapy and
overload on a muscle leading to micro-tearsa conscious effort to comply with a home
in the muscle belly or tendon. A tendon isexercise program are usually rehabilitated
a tissue similar in strength to a ligamentvery successfully with low chance of
that connects a muscle to the bone. Bothre-injury. However, if an ankle sprain is
ligaments and tendons are non-contractilenot fully rehabilitated, the chances of
tissue. Only muscle has the ability tore-injury with more severe damage increase
contract (shorten).Grading an ankle spraingreatly.Dr. Brad Gilden, DPT, MSPT, CSCS has
There are three different grades of an anklebeen practicing orthopedic and sports
sprain based on the severity of thephysical therapy over the past six years. He
injury.Grade I (1st degree)- This is the mostrecently completed his doctorate in
common type of sprain. The ligaments areorthopedics with an emphasis in upper quarter
overstretched but no visible tear hasand hand therapy. Dr. Gilden is also
occurred. Microscopic tears have occurredrecognized as a certified strength and
that will heal if treated properly. Minimalconditioning specialist. Dr. Gilden
swelling should occur and only minor anklepractices physical therapy in Westchester
instability  will  be  present.County, NY and will be joining Elite Health
Services, LLC a company that provides in-home
Grade II (2nd degree)- This is a more severephysical therapy and personal training. Dr.
injury and the ligament has sustained aGilden works with patients of all ages and
partial tear. The ankle will typically berehabilitation needs. He has advanced
more swollen and ecchymosis (bruising) willtraining in manual therapy and continues to
usually occur. The ankle will be morebroaden his experience by taking continuing
unstable  and  painful compared to a grade I.education courses each year. Dr. Gilden
lectures to personal trainers, patients and
Grade III (3rd degree)- This is the mostother health professionals on various topics
severe injury as the ligament has beenthroughout the year. He is an active member
completely torn. This is the most painfulof the American Physical Therapy Association
ankle sprain and will typically present as(APTA), and National Strength & Conditioning
very hot and swollen with a lot of ecchymosisAssociation.
sometimes tracking halfway up the lower leg.



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