Nerve conduits have become an established option for repair of sensory deficits of up to 2 cm. More recently, decellularized nerve allograft has also been advocated as an option for nerve repair; however, no clinical studies have examined its efficacy for the treatment of sensory nerve defects. The aim of this study was to examine our early experience with the use of decellularized nerve allograft for repair of segmental nerve defects within the hand and fingers. From July 2007 to March 2008, seven patients who had ten nerve gaps were treated surgically using decellularized nerve allograft. Eight digital and two dorsal sensory nerves were repaired. The etiologies of the nerve defects were traumatic nerve transection in eight defects and neuroma resection and reconstruction in two defects. All of the affected nerves were pure sensory fibers. Functional recovery was evaluated by blinded hand therapist using moving and static two point discrimination tests. Implantation sites were also evaluated for any signs of infection, rejection, or graft extrusion. There were five men and two women with a mean age of 44 years (range 23-65). Mean nerve graft length was 2.23 cm with a range of 0.5-3 cm. Mean follow up time was 9 months (range 5-12). Average two point discrimination was 4.4 mm moving and 5.5 mm static at last recorded follow-up. There were no wound infections observed around the graft material and sensory improvement was observed in all of the patients despite this short-term follow-up. Re-exploration of two fingers was required for flexor tendon rupture in one and flexor tendon tenolysis in the other. In both cases, the nerve allograft was visualized and appeared well incorporated in the repair site. Decellularized nerve allografts were capable of returning adequate sensation in nerve defects ranging from 0.5 to 3 cm. There were no cases of infection or rejection. Decellularized nerve allograft may provide an option for segmental nerve gaps beyond 2 cm. Randomized comparative studies will be required to determine efficacy in comparison to collagen conduits or nerve autograft.
The vascularized medial femoral condyle corticoperiosteal flap provides an additional treatment option for the management of humeral nonunions.
The incidence of single-vessel traumatic arterial occlusion within traumatized lower limbs undergoing free tissue transfer may be as high as 29 percent. Computed tomographic angiography provided excellent visualization of lower extremity vasculature, and its routine use for trauma patients is safe. Flap failure rates were low when using this technique for preoperative planning. Flap failure occurred only in patients with evidence of arterial injury. Evidence of arterial occlusion on computed tomographic angiography may be a risk factor for limb loss.
With its perineural invasion capacity, periorbital squamous cell carcinoma (SCC) may easily invade orbital structures. When SCC invades the orbital musculature or the orbit itself, orbital exenteration, one of the most disfiguring operations on the face, is required. We reviewed elderly patients with periorbitally localized SCC requiring orbital exenteration to evaluate reconstructive options and survival. A chart review of patients' records was conducted to identify all patients older than 65 years with periorbital malignancy requiring orbital exenteration from 2006 to 2011. A total of 9 patients who met the criteria were included in the study. The mean age at surgery was 77 ± 6.7 years, and the mean defect size was 74.2 cm2. All patients had a similar history of late presentation to a doctor because of hesitation to undergo surgery. The temporoparietal fascia flap, galeal flap, free gracilis flap, and free vastus lateralis musculocutaneous flap were the treatment options for reconstruction of the defects. All patients died during follow-up, and the mean survival was 15.7 months (range, 6-36 months). Only 2 of them had relapse before the death. Our small series suggest that elderly patients with periorbital SCC requiring orbital exenteration may not have enough survival to relapse because of the death from different causes without relapse or any sign of spreading cancer. Also, prolonged surgery with free flap reconstruction may increase the risk of postoperative intensive care unit requirement. Because local flaps may work very well for reconstructing the orbital exenteration defects, free flap option should be kept for selected cases.
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