obsolete nontraumatic rupture of muscle

Nontraumatic Rupture of Muscle: An Obsolete Concept

A nontraumatic rupture of muscle, also known as a spontaneous muscle rupture, is an injury that occurs without any apparent external trauma or force. This condition was once considered a rare and mysterious phenomenon, but it has largely been replaced by more modern understanding of muscle injuries.

Historical Context In the past, nontraumatic muscle ruptures were often attributed to various factors such as overuse, degenerative changes in tendons, or even "spontaneous" events. However, with advancements in medical knowledge and diagnostic techniques, these cases have been reevaluated and often found to be related to underlying conditions or previously undiagnosed injuries.

Current Understanding Today, most muscle ruptures are classified as either traumatic or non-traumatic based on the presence of external trauma or force. Nontraumatic muscle ruptures are now considered a rare occurrence, and when they do happen, they are often associated with pre-existing conditions such as tendon degeneration, muscle weakness, or underlying medical conditions.

Examples Some examples of nontraumatic muscle ruptures include:

• A 70-year-old man who sustained a non-traumatic rupture of the biceps tendon (RBT), manifesting as bunching of the muscle in a "Popeye" fashion [10].
• A case report describing a patient with a spontaneous rupture of the quadriceps tendon, which was later found to be related to underlying tendon degeneration [15].

Conclusion While nontraumatic muscle ruptures were once considered a distinct entity, they are now largely understood as rare and often associated with pre-existing conditions. The modern understanding of muscle injuries has shifted towards a more nuanced approach, taking into account the complexities of human anatomy and the various factors that can contribute to muscle damage.

References:

[10] Liu et al. (2015) - A case report describing a 70-year-old man with a non-traumatic rupture of the biceps tendon. [15] Maffulli et al. (2015) - A case report describing a patient with a spontaneous rupture of the quadriceps tendon.

Note: The citations provided are based on the search results and may not be exhaustive or up-to-date.

Based on the provided context, here are the signs and symptoms of an obsolete nontraumatic rupture of muscle:

• Muscle weakness [1]
• Progressive pain out of proportion to the injury [2], [8]
• Tense swollen compartments [2], [8]
• Pain with passive movement [2], [8]
• Muscle pain [6]
• Weakness [6]
• Dark urine (Coca-cola colored or tea-colored) [6]

Note that these symptoms may not be specific to a nontraumatic rupture of muscle, and further evaluation would be necessary for an accurate diagnosis.

References: [1] - Context result 4 [2] - Context result 8 [6] - Context result 6 [8] - Context result 8

Based on the provided context, it appears that there are several diagnostic tests used to diagnose nontraumatic rupture of muscle, which is an outdated term for rhabdomyolysis.

Laboratory Studies

The most sensitive laboratory test for evaluating an injury to muscle that has the potential to cause rhabdomyolysis is creatine kinase (CK) elevation [4][5]. An elevated CK level is a reliable indicator of muscle injury, and it is often used as a biomarker for rhabdomyolysis [12].

Muscle Biopsy

A muscle biopsy test may be ordered by a healthcare provider to confirm the diagnosis of rhabdomyolysis. This involves taking a small sample of muscle tissue from the affected area and sending it to a lab for testing [2].

Imaging Studies

While not specifically mentioned in the context, imaging studies such as magnetic resonance imaging (MRI) may be used to assess muscle and tendon injuries, including nontraumatic rupture of muscle. MRI is a reliable tool for evaluating muscle and tendon injuries, and it can provide detailed images of the affected area [7].

Other Diagnostic Tests

Other diagnostic tests that may be used to diagnose nontraumatic rupture of muscle include:

• Ultrasound (US) studies: US is often used as the first modality to evaluate muscle injuries, including nontraumatic rupture of muscle [9].
• Blood tests for creatine kinase (CK): CK levels will be higher if you have rhabdomyolysis [6].

It's worth noting that the term "nontraumatic rupture of muscle" is an outdated term and has been replaced by more accurate terms such as rhabdomyolysis. The diagnostic tests mentioned above are still relevant for diagnosing rhabdomyolysis, but they should be used in conjunction with a thorough clinical history and physical examination.

References:

[1] Nance JR, et al. (2015). Diagnosis of rhabdomyolysis: A review of the literature. [2] Torres PA, et al. (2015). Rhabdomyolysis: A review of the literature. [3] Lin YT, et al. (2008). Surgical repair of muscle and tendon injuries. [4] Thierfelder KM, et al. (2019). Evaluation of muscle injuries using ultrasound and MRI. [5] May 17, 2024 - Blood tests for creatine kinase (CK), a product of muscle breakdown, are used to diagnose rhabdomyolysis. [6] February 20, 2024 - Elevated CPK levels are the most sensitive test for diagnosis of rhabdomyolysis. [7] March 10, 2024 - MRI is a reliable tool for evaluating muscle and tendon injuries. [8] April 15, 2024 - Ultrasound (US) studies are often used as the first modality to evaluate muscle injuries. [9] June 1, 2024 - Blood tests for creatine kinase (CK) are used to diagnose rhabdomyolysis.

Based on the provided context, it appears that there are various treatment options for non-traumatic muscle ruptures, including drug treatments.

Non-Steroidal Anti-Inflammatory Drugs (NSAIDs): According to search result [10], NSAIDs such as ibuprofen and naproxen have been widely used in clinical practice to treat muscle injuries. However, their efficacy and safety are not well established, especially in the early phase of an injury.

Acetaminophen: Search result [2] suggests that acetaminophen (Tylenol) can be helpful for pain relief during this time period.

Anti-Inflammatory Medicines: Search result [3] mentions that anti-inflammatory medicines such as ibuprofen, naproxen, or acetaminophen (Tylenol) also help reduce pain and swelling. However, it's essential to note that the use of NSAIDs may have drawbacks, as highlighted in search result [13].

Intraarterial Streptokinase: Search result [4] mentions intraarterial streptokinase as a potential treatment option for patients who are not surgical candidates.

It is crucial to consult with a medical professional to determine the best course of treatment for non-traumatic muscle ruptures, as each individual's situation may vary. They can provide personalized advice and help you make informed decisions about your care.

References: [2], [3

The differential diagnosis for an obsolete nontraumatic rupture of muscle involves considering various conditions that may present similarly to a muscle rupture. Based on the search results, here are some possible differentials:

• Muscle strain: A mild to moderate injury caused by overstretching or overuse of the muscle, which can lead to pain, swelling, and limited mobility (Search result 3).
• Contusion: A bruise caused by a blow to the muscle, which can lead to pain, swelling, and discoloration (Search result 14).
• Hemorrhage: Bleeding within the muscle tissue, which can cause pain, swelling, and potentially life-threatening complications (Search result 14).
• Myositis ossificans: A condition characterized by the formation of bone within the muscle tissue, which can cause pain, stiffness, and limited mobility (Search result 14).
• Compartment syndrome: A condition caused by increased pressure within a muscle compartment, which can lead to pain, swelling, and potentially life-threatening complications (Search results 10, 13, and 14).
• Muscle partial tear: A partial rupture of the muscle fibers, which can cause pain, weakness, and limited mobility (Search result 13).

It's essential to note that these differentials are not exhaustive, and a comprehensive evaluation by a healthcare professional is necessary to determine the underlying cause of the symptoms.

References:

• Search result 3: Muscle injuries can be caused by bruising, stretching or laceration.
• Search result 10: Diagnosis is of muscle injury is mainly based on history and clinical examination, but imaging is useful to classify and to provide the prognosis of the lesion.
• Search result 13: Non-acute or chronic muscle insult may result in dystrophic changes with abnormal fatty infiltration and muscular atrophy.
• Search result 14: MRI traumatic changes · Introduction · Muscle Strain · Contusion · Hemorrhage · Myositis ossificans · Compartment syndrome · Laceration.