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An abnormal clinical Allen's test is not a definitive exclusion criterion for free radial forearm flap use. A surgical Allen's test may be useful to determine whether flap harvest is feasible in patients with an abnormal clinical Allen's test.

Background In microvascular free-tissue harvest and transfer, the need for repositioning from lateral decubitus position and the inability to use a two-team approach are major drawbacks of the subscapular system. We present our experience with the subscapular system for upper and lower extremity reconstruction using a two-team approach without need for repositioning. Methods We conducted a retrospective chart review for all patients undergoing free flap transplant based on the subscapular system to the upper or lower extremity at our microsurgical facility from January 1, 2007 to December 31, 2011. Only cases not requiring intraoperative repositioning were included. Sixty-four patients underwent the two-team approach (37 upper extremity and 27 lower extremity transplants). Flap types included latissimus dorsi musculocutaneous, partial superior latissimus, dorsal thoracic fascia, serratus, scapular bone, and thoracodorsal artery perforator, either alone or as chimeric flaps. All patients were placed in the lateral decubitus position for the duration of the surgery. Results The ipsilateral subscapular system was used in 16% of cases for lower extremity defects, where the anterior tibial vessels served as recipient vessels. The contralateral subscapular system was used in all remaining cases for upper extremity or the vast majority for lower extremity (84%) defects, where either the superficial femoral, genicular, popliteal, sural, or posterior tibial vessels served as recipient vessels. With the exception of one partial flap loss secondary to infection, all flaps survived. Conclusions Proper lateral decubitus positioning allows for a two-team approach without compromising safety or outcomes.

Background Vascular injuries resulting in limb ischemia are traditionally treated acutely with autologous or prosthetic bypass grafts. Traumatic contaminated injuries with soft tissue and vascular segmental loss are challenging as prosthetic bypasses are at risk of erosion, infection, and occlusion; and autologous bypasses are at risk of desiccation, blow-out, infection, and clotting. We propose a novel approach to these injuries by using arterialized saphenous vein venous flow-through free flaps (S-VFTF) as an autologous bypass, and present the results of its application in a series of cases. Methods Spanning 2008 to 2015, four patients presenting with large contaminated crush/avulsion wounds with vascular injury underwent hand revascularization with S-VFTF, allowing the contaminated wounds to be serially debrided. Definitive soft tissue reconstruction was performed once the wound was considered clean. The S-VFTF skin paddle was de-epithelialized and the soft tissue defect covered with a free latissimus dorsi flap or a rectus abdominis myocutaneous flap. Results All ischemic limbs were successfully reperfused and there were no take backs for perfusion issues. All S-VFTF remained patent at discharge and final follow-up. No partial or complete finger/hand amputations were required. All definitive coverage free flap survived with no complications. Conclusion The two-stage reconstruction presented may help reconstructive and vascular surgeons consider alternatives to traditional vascular reconstruction methods. This technique avoids an exposed vascular graft in an extensively contaminated open wound. It allows the surgeon to perform thorough and sufficient debridement of the wound, preventing definitive reconstruction in a not yet declared zone of injury.

Peripheral nerve repair can be very rewarding for both surgeon and patient when expected outcomes are achieved. In many cases, however, the results are suboptimal due to number of possible objective and technical reasons. Although we cannot influence patent's comorbidities, the extent or mechanism of the nerve injury, we may help optimize technical details when aiming towards improved outcomes. While the suture coaptation for primary nerve repair or nerve reconstruction with grafting served as the reconstructive standard for many decades, technical imperfections remain threats to reconstructive goals. Tension, fascicular misalignment generated by over tightening suture coaptation, deeply placed sutures, reactive scarring to foreign material at anastomosis site, may all negatively affect axonal regeneration. As the goal of every nerve repair is to have ideally opposed tension free nerve fascicles, protected from the deleterious effects of the wound bed. The utilization of coaptation aids to overcome the challenges of nerve repair has been suggested as an alternative to the classical suture repair. A review of clinical literature was performed to assess the evidence for this technique and the critical success factors to consider when implementing this technique. Twelve clinical studies met criteria, majority suggesting improved outcomes by the utilization of a coaptation aid. Most commonly reported improvements were improved sensory outcomes, reduced tenderness or pain at the coaptation site and reduced operative time. The current clinical evidence data suggests that utilization of a coaptation aid is a technical innovation to help provide better nerve repair and reconstructive functional outcomes.

Objective This study seeks to demonstrate the safety of anastomosing free flaps to the common or proper digital artery, and to the volar or dorsal digital vein in soft tissue reconstruction of the hand; as well, as to discuss the advantages of this technique. Methods Retrospective review of all patients who underwent free flap reconstruction of the hand in two institutions over a period of 5 years. Results A total of 29 free flaps (9 great toe pulp, 7 anterolateral thigh, 6 second toe pulp, 4 radial artery perforator, 2 partial medial rectus, 1 lateral arm) in 28 patients met our inclusion criteria. All recipient vessels were the proper or common digital artery and the volar or dorsal digital vein. There was one case of venous congestion that resolved with leeching. There was no partial or total loss of any of the flaps. Conclusion Anastomosing soft tissue free flaps to the common or proper digital artery, and the volar or dorsal digital vein is a safe and effective approach with numerous advantages that should be considered in the reconstruction of soft tissue defects of the hand. © 2016 Wiley Periodicals, Inc. Microsurgery, 38:21-25, 2018.