Myositis ossificans: Difference between revisions
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==Overview== | ==Overview== | ||
'''Myositis ossificans''' comprises two syndromes characterized by [[heterotopic ossification]] (calcification) of muscle. | '''Myositis ossificans''' comprises two syndromes characterized by [[heterotopic ossification]] (calcification) of muscle. | ||
==Classification== | ==Classification== | ||
* In the first, and by far most common type, ''nonhereditary myositis ossificans'' (commonly referred to simply as "myositis ossificans", as in the remainder of this article), | * In the first, and by far most common type, ''nonhereditary myositis ossificans'' (commonly referred to simply as "myositis ossificans", as in the remainder of this article), [[calcification]]s occur at the site of injured muscle, most commonly in the arms or in the [[quadriceps]] of the thighs. | ||
* The second condition, ''myositis ossificans progressiva'' (also referred to as [[fibrodysplasia ossificans progressiva]]) is an inherited affliction, [[autosomal dominant]] pattern, in which the ossification can occur without injury, and typically grows in a predictable pattern. | * The second condition, ''myositis ossificans progressiva'' (also referred to as [[fibrodysplasia ossificans progressiva]]) is an inherited affliction, [[autosomal dominant]] pattern, in which the [[ossification]] can occur without injury, and typically grows in a predictable pattern. | ||
== | ==Diagnosis== | ||
Myositis ossificans usually presents with [[Pain and nociception|pain]], tenderness, focal swelling, and joint muscle reduction, in the aftermath of a painful muscle [[contusion]] which resolved more slowly than expected, if at all. | Myositis ossificans usually presents with [[Pain and nociception|pain]], tenderness, focal swelling, and joint muscle reduction, in the aftermath of a painful muscle [[contusion]] which resolved more slowly than expected, if at all. | ||
The condition rarely is [[asymptomatic]], and may sometimes be diagnosed from radiographs obtained for unrelated problems. | The condition rarely is [[asymptomatic]], and may sometimes be diagnosed from radiographs obtained for unrelated problems. | ||
Most (ie, 80%) ossifications arise in the thigh or arm, and are predisposed to by a too-early return to activity after an injury. Other sites include [[intercostal spaces]], [[erector spinae]], pectoralis | Most (ie, 80%) ossifications arise in the thigh or arm, and are predisposed to by a too-early return to activity after an injury. Other sites include [[intercostal spaces]], [[erector spinae]], [[pectoralis muscle]]s, glutei, and the [[chest]]. Hazy densities are sometimes noted one month after injury, while the denser opacities eventually seen may not be apparent until two months have passed. | ||
==Treatment== | |||
Treatment is initially conservative, as some patients' calcifications will spontaneously be reabsorbed, and others will have minimal symptoms. In occasional cases, surgical [[debridement]] of the abnormal tissue is required, although success of such therapy is limited. | Treatment is initially conservative, as some patients' calcifications will spontaneously be reabsorbed, and others will have minimal symptoms. In occasional cases, surgical [[debridement]] of the abnormal tissue is required, although success of such therapy is limited. | ||
==References== | |||
{{reflist|2}} | |||
{{Diseases of the musculoskeletal system and connective tissue}} | {{Diseases of the musculoskeletal system and connective tissue}} | ||
{{WikiDoc Help Menu}} | {{WikiDoc Help Menu}} | ||
{{WikiDoc Sources}} | {{WikiDoc Sources}} | ||
Latest revision as of 19:13, 2 November 2012
| Myositis ossificans | |
| ICD-10 | M61 |
|---|---|
| ICD-9 | 728.1 |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]
Please Join in Editing This Page and Apply to be an Editor-In-Chief for this topic: There can be one or more than one Editor-In-Chief. You may also apply to be an Associate Editor-In-Chief of one of the subtopics below. Please mail us [3] to indicate your interest in serving either as an Editor-In-Chief of the entire topic or as an Associate Editor-In-Chief for a subtopic. Please be sure to attach your CV and or biographical sketch.
Overview
Myositis ossificans comprises two syndromes characterized by heterotopic ossification (calcification) of muscle.
Classification
- In the first, and by far most common type, nonhereditary myositis ossificans (commonly referred to simply as "myositis ossificans", as in the remainder of this article), calcifications occur at the site of injured muscle, most commonly in the arms or in the quadriceps of the thighs.
- The second condition, myositis ossificans progressiva (also referred to as fibrodysplasia ossificans progressiva) is an inherited affliction, autosomal dominant pattern, in which the ossification can occur without injury, and typically grows in a predictable pattern.
Diagnosis
Myositis ossificans usually presents with pain, tenderness, focal swelling, and joint muscle reduction, in the aftermath of a painful muscle contusion which resolved more slowly than expected, if at all.
The condition rarely is asymptomatic, and may sometimes be diagnosed from radiographs obtained for unrelated problems.
Most (ie, 80%) ossifications arise in the thigh or arm, and are predisposed to by a too-early return to activity after an injury. Other sites include intercostal spaces, erector spinae, pectoralis muscles, glutei, and the chest. Hazy densities are sometimes noted one month after injury, while the denser opacities eventually seen may not be apparent until two months have passed.
Treatment
Treatment is initially conservative, as some patients' calcifications will spontaneously be reabsorbed, and others will have minimal symptoms. In occasional cases, surgical debridement of the abnormal tissue is required, although success of such therapy is limited.
References
Template:Diseases of the musculoskeletal system and connective tissue