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New mini-invasive decompression for pronator teres syndrome
Eduardo R Zancolli1, Eduardo P Zancolli, Christian Jorge Perrotto
1Sanatorio de la Trinidad, Buenos Aires, Argentina.
The Journal of Hand Surgery
|July 28, 2012
Summary
Pronator teres syndrome, caused by median nerve compression in the forearm, can be effectively treated by releasing the deep fascia of the pronator teres superficial head. This mini-invasive surgical approach resolves symptoms in most patients.
Area of Science:
- Orthopedic Surgery
- Neuroanatomy
- Surgical Technique
Background:
- Pronator teres syndrome involves median nerve compression in the upper forearm, often co-occurring with carpal tunnel syndrome.
- Various anatomical structures are implicated in median nerve compression at the elbow.
- The pronator teres muscle is a key anatomical structure in the forearm.
Observation:
- Clinical experience suggests the deep fascia of the pronator teres superficial head is the primary cause of median nerve compression.
- A negative flexor digitorum test may indicate pronator teres syndrome.
- This syndrome can present dynamically and mimic other conditions.
Findings:
- Selective release of the deep fascia of the pronator teres superficial head effectively resolves pronator teres syndrome symptoms.
- A mini-invasive surgical technique utilizing a small incision and precise anatomical dissection allows for targeted release.
- In a series of 44 patients, this technique resulted in symptom resolution in 93% of cases.
Implications:
- This study highlights a specific anatomical cause for pronator teres syndrome and a targeted surgical solution.
- The mini-invasive approach offers a high success rate for treating this condition.
- Accurate anatomical understanding is crucial for successful surgical intervention in median nerve entrapment syndromes.

