Diagnosis To Device

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  • Sclerosis

    Multiple sclerosis (MS) is a condition that can affect the brain and spinal cord, causing a wide range of potential symptoms, including problems with vision, arm or leg movement, sensation or balance. It’s a lifelong condition that can sometimes cause serious disability, although it can occasionally be mild. Deconditioning of muscles results from lack of use. Often in MS, due to fatigue, pain, imbalance, or other symptoms, a person’s overall activity level is reduced. Lack of activity will cause muscles to become weak. For this type of weakness, progressive resistive exercise with weights can be very effective. People suffering from spasticity associated with MS may also present with Hypertonicity (increased muscle tone), which can lead to muscle stiffness, rigid joints and bladder dysfunction.

    Comfortable seating with good pressure management should be considered with Multiple Sclerosis. Lateral Trunk contouring can be helpful to keep the user in the midline position. Neutral seat dump & knee separation with good medial thigh contouring can aid with maintaining the pelvis & a better spinal posture.

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  • Duchenne

    Duchenne muscular dystrophy is a genetic disorder characterized by the progressive loss of muscle. It is a multi-systemic condition, affecting many parts of the body, which results in deterioration of the skeletal, heart, and lung muscles. Duchenne is caused by a change in the dystrophin gene. DMD is the most common childhood onset form of muscular dystrophy and affects males almost exclusively. The birth prevalence is estimated to be 1 in every 3,500 live male births. Age of onset is usually between 3 and 5 years of age.

    The future needs to be considered With Muscular Dystrophy as the user will progressively become weaker requiring more external support. Initially the user may have a self propelling chair then as the condition deteriorates, move towards a powerchair.a In the ambulatory phase the user may develop an anterior pelvic tilt to compensate the developing weakness which may need to be considered in the wheelchair seat in terms of back support & Pelvic positioning. Comfort & pressure management are essential as well as support. Gel is a good consideration they attempt to replace th consistency & support of atrophied muscle tissue creating a firm surface than foam.

  • Becker

    Becker muscular dystrophy (BMD) is an X-linked recessive disorder due to mutation in the dystrophin gene that results in progressive muscle degeneration and proximal muscle weakness. This condition is less common and less severe than Duchenne muscular dystrophy (DMD).

  • Facioscapulohumeral

    Facioscapulohumeral muscular dystrophy (FSHD) is characterized by progressive muscle weakness involving the face, scapular stabilizers, upper arm, lower leg (peroneal muscles), and hip girdle [Wang & Tawil 2016]. Asymmetry of facial, limb, and shoulder weakness is common [Kilmer et al 1995]. Over time, muscle weakness decreases mobility, making everyday tasks difficult.

  • Mytonic

    Myotonic dystrophy is a genetic condition that causes progressive muscle weakness and wasting. Myotonic dystrophy can affect muscles of movement and often affects the electrical conduction system of the heart, breathing and swallowing muscles, bowels, lens of the eye and brain. People with this disorder often have prolonged muscle contractions (myotonia) and are not able to relax certain muscles after use.

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  • Pelvic Obliquity

    Pelvic obliquity is the misalignment of the pelvis, typically where one hip is higher than the other. This condition can lead to abnormal postures due to the spine compressing and becoming misaligned to compensate for any misalignment.

    For people with flexible pelvic obliquity, the seat cushion can also play a key role in correcting or accommodating their postural abnormality.  If the obliquity is flexible, a wedge is placed under the seat on the low side to level the pelvis. When the Pelvis presents as fixed, we have to be careful we don’t increase the pelvic obliquity. Maybe, a build up under the high side to accommodate & distribute pressure, but not to the level of the obliquity so there is ability to reduce it over time. Fixed pelvic obliquity doesnt mean it can’t get worse. Also find the core reason for the pelvic obliquity, is hip pain or subluxation the cause? – These may need to be addressed first.

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  • Pelvic Rotation

    A pelvic rotation is when an individual presents with one hip further forward in the seat, with one anterior superior iliac spine more forward than the other. This can arise from how an individual sleeps (side lying), dominant side compensatory postures, through to daily activities such as operating a powerchair.

    With pelvic rotation, check to see if there is an unaccommodated leg length discrepancy & if there is unaccommodated assymetry in the individual’s trunk. Sometimes accommodating more windsweeping can reduce the muscle tone, reduce pelvic rotation & enable a more upright sitting posture.

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  • Pelvic Anterior Tilt

    Anterior Pelvic tilt is the opposte of Posterior pelvic tilt, the pelvis tilts forward. Tightening or inbalance of the hip flexor muscles to the weakening of the hamstring muscles & tightening of the sacrospinalis muscles. For wheelchair users, sometimes Anterior Pelvic Tilt develops during the ambulatory stage as a compensatory posture to increase stability & movement or it may arise from instability in the wheelchair seat.

    Sometimes mild anterior tilt of the pelvis is encouraged as it can help to distribute weight through the ischial region & reduce some asymmetries in the spine such as kyphosis but it also can be the root of substantial lordosis in the spine. Keeping the backrest upright to make better contact with the individual and contouring to allow excess fleshy tissue to protrude below the backrest may help. A mild (5 deg.) degree of seat dump could be tried to reduce the tone.

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  • Extension Thrust

    Extension thrust is the extending of the legs. With spastic quadriplegia, persons can show global pattern of extension. During our seating assessments of many “high needs” users we found that EXTENSION THRUST can apply both to clients with overall High tone or Low tone but mostly was caused by only two reasons:
    Discomfort – Most importantly & commonly we found that tightened hamstrings combined with seating which incorporated a traditional style high pre-ischial shelf was the cause of great discomfort to the user. It seemed counter-intuitive, but enabling the leg or legs to be positioned lower to relieve the hamstring muscles combined with allowing the feet to move back on the footplate or using 90 degree legrest hangers, the clients sat for much longer periods without extending out of the seat or showing signs of discomfort. Sometimes repositioning the legs laterally to accommodate tightened abductor muscles or adductor muscles e.g. windswept postures, greatly aided in the comfort to the user for long term sitting. Undiscovered hip subluxation or dislocation also causes a lot of pain & discomfort to the user & the client often will extend or twist in their seating to relieve the pain. Reducing any pressure in this area & reducing the tension on the hip belt can quickly help the client to relax.
    Mood – We all have bad days where we want to vent our feelings & frustrations. As these feelings go well beyond how they feel about their seat, this type of extension thrust will not be fixed by well configured & comfortable seating although good postural seating may reduce the frustrations making the client happier overall.

    Firstly, check the occupant can tolerate the angles of the seating system (these may need to be opened or closed to reduce the effect of the muscle tone). Secondly, check for discomfort – pain from a joint, muscle or fleshy tissue can cause the individual to extend.

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  • Flexion

    Flexion is the most common knee deformity in patients with cerebral palsy and frequently occurs in ambulatory children. lexion at the hip (which causes the leg to lift upwards when lying or the body to lean forwards in standing) Flexion at the knees (causing changes in a person’s standing posture).

    Regular monitoring of a user’s range of movement can help to identify flexion contractures at an early stage. Knee flexor contractures may require the footplates to be moved rearwards to accommodate the contracture. Another option may be to reduce the cushion depth to enable the lower leg to move backwards. Tightening of the PSOA muscles may increase posterior pelvic tilt & some accommodation in the backrest may be required if the posture is fixed.

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  • ATNR (Asymmetrical Tonal Neck Reflex)

    The asymmetrical tonic neck reflex (ATNR) is a primitive reflex found in newborn humans that normally vanishes around 6 months of age. Prolonged ATNR can be associated with developmental delays. It becomes hard for them to cross the midline of their bodies, for example, and they can’t handle objects with both hands. In other instances, the child can’t identify which hand or leg to use, causing him to hesitate in movements.

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