Journal of reconstructive microsurgery
-
J Reconstr Microsurg · Aug 2000
Comparative StudyRole of the target in end-to-side neurorrhaphy: reinnervation of a single muscle vs. multiple muscles.
The authors examined the effects of end-to-side neurorrhaphy for reinnervation of the musculocutaneous nerve (Group A) which innervates the biceps muscle, compared to reinnervation of the median nerve which innervates multiple muscles in a rat model. Additionally, end-to-end neurorrhaphy to the musculocutaneous nerve using one-third of the median nerve (Group B) was investigated. End-to-end coaptation of the musculocutaneous nerve served as a control (Group C). ⋯ The reason for this phenomenon is most likely that all sprouting axons are directed toward one target rather than toward multiple targets, with the latter situation resulting in a smaller number of axons and a variable distribution of axons per target. Since donor nerve sprouting axons were observed at the coaptation site, a relevance of the selected site for end-to-side neurorrhaphy is suggested. Both end-to-side neurorrhaphy and end-to-end neurorrhaphy, using one-third of the median nerve, led to useful functional recovery in this rat model, if an agonistic donor nerve is employed.
-
J Reconstr Microsurg · Aug 2000
Comparative StudyDifferent methods and results in the treatment of obstetrical brachial plexus palsy.
Mallet's test was used to evaluate shoulder and elbow functional results following conservative treatment, neurolysis, and nerve transfer and grafting in 31 patients with obstetrical brachial plexus palsy, who had no recovery of biceps contraction by 3 months of age. Twelve of them had been treated conservatively for 3 to 4 years. Nine patients with upper trunk conducting neuromas underwent neurolysis at the age of 4 to 6 months. ⋯ However, none of the conservative treatment and neurolysis groups had a good result. The authors conclude that when there is no recovery of biceps contraction by 3 months of age, surgical intervention is indicated. Neuroma should be managed by nerve transfer and grafting, even though intraoperative electrophysiologic studies show that the neuroma is a conducting one.
-
J Reconstr Microsurg · Jul 2000
Rectus abdominis free-tissue transfer in lower extremity reconstruction: review of 40 cases.
Forty patients who underwent rectus abdominis free-tissue transfer with split-thickness skin grafts for reconstruction of the lower extremity are reported. The procedures were performed between January, 1992 and December, 1998. Transfers were utilized for coverage of acute soft-tissue and bone defects (18 patients), defects following radical debridement of chronic osteomyelitis of the leg and foot (13 patients) or diabetic foot ulcers (eight patients), and for unstable scars (one patient). ⋯ Three flaps were totally lost. All patients but one were ambulatory and fully weight-bearing at the time of review, with consolidation of the fractures and bone defects and no evidence of recurrence of infection in the osteomyelitis or diabetic foot ulcer groups. The relatively high success rate (92.5 percent), the ease of surgical dissection, the consistency and size of the deep inferior epigastric pedicle, the absence of donor-site morbidity, and relatively low complication rates make the rectus abdominis muscle one of the preferable free-tissue transfers for these authors.
-
J Reconstr Microsurg · May 2000
Comparative StudyLong-term evaluation of rat peripheral nerve repair with end-to-side neurorrhaphy.
This study was designed to assess long-term reinnervation of end-to-side neurorrhaphy in the rat. The cut right peroneal nerve was repaired and sutured to the side of the intact tibial nerve. Both the extent of reinnervation and the integrity of the intact donor nerve were evaluated in 48 Sprague-Dawley rats randomly treated with fresh or delayed nerve repair with or without perineurotomy. ⋯ The mean number of myelinated fibers at 12 months postoperatively was significantly higher in animals with a perineurotomy window (compared to without) in both fresh and predegenerated nerve repair subgroups, respectively (p <0.05). These results indicated that end-to-side neurorrhaphy permits axonal regeneration from the intact donor nerve and is associated with satisfactory recovery. The effect of the procedure on the donor nerve was negligible.
-
J Reconstr Microsurg · Apr 2000
Biography Historical ArticleJames R. Learmonth: the first peripheral nerve surgeon.
The life and education of James R. Learmonth are reviewed. His experimental and clinical activities place him historically as the first surgeon to devote himself to peripheral nerve surgery.