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Lecture 4 HO Flashcards

(12 cards)

1
Q

Heterotopic ossification most commonly affects soft tissues where?

A

peri-articular (near joints)

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2
Q

What are the two kinds of heterotopic ossification

A

neurogenic and traumatic

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3
Q

Out of these Neuro conditions, which most commonly get heterotopic ossification:

TBI, SC, CVA, MS

A

TBI and SCI

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4
Q

When does HO usually form in patients w/ spinal cord injury

A

Incidence: 10-78%

Presents 3-12 weeks later, but can develop a year later or more

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5
Q

How soon after injury can HO occur in patient’s with TBI

A

Incidence: 8-20%

Increase in incidence in patietns in coma/PVS for over 2 weeks

Occurs 7-17 weeks after injury

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6
Q

What factors lead to a higher incidence of HO following SCI

A

-Gender
-Spasticity
-Smoking
-Completeness of cord injury
-pneumonia
-pressure ulcers

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7
Q

HO can affect any joint ____________ in patients with SCI/TBI

A

Below the level of the lesion/injury

SCI: commonly hips, knees

TBI: commonly includes shoulder, elbow, hips

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8
Q

What joints are rarely affected by HO

A

Peripheral joints like wrists, ankles, hands, feet

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9
Q

What are the initial signs of HO?

2 weeks later?

A

Pain

Localized Inflammation

Decreased ROM

2 weeks later: region is hard upon palpation
joint ROM further restricted
serum alkaline phosphatase levels increase and stay elevated

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10
Q

What is the gold standard for diagnosing HO?

What does research suggest is more convinent and still very reliable

A

Triple phase bone scinitigraphy

Diagnostic ultrasound

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11
Q

Why is timing of intervention important for managing HO

A

Wait until the bone is mature before attempting to remove it surgically

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12
Q

How does PTs do ROM for patients with HO

A

Don’t do ROM that is too agressive into any boney endfeels

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