Pauline Sergent

Application of the Induced Membrane in the Acute Setting of Bone Loss

A prospective continuous study is reported concerning 9 cases of traumatic bone defect that were treated by the induced membrane technique in emergency. This technique involves stable fixation, flap if necessary, and filling the void created by the bone defect by a cement spacer [poly(methyl methacrylate) without antibiotic]. This technique needs a second-stage procedure where the cement is removed and the void is filled by cancellous bone. The key point is to respect the foreign-body membrane that develops around the cement spacer, creating a biologic chamber after the second stage. Bone union was evaluated prospectively by x-ray and computed tomographic scan and was achieved with a delay of 10 months (7 to 14). Three cases needed reoperation. No septic complications occurred. Masquelet first reported 35 cases of large-bone defect of tibia nonunion treated by this technique. Flamans reported the use of the technique at hand level in emergency. Work on animal models reported by Pelissier and Viateau showed the properties of the membrane: secretion of growth factors and osteoinductive activity of the cells. Giannoudis reported the same results in human induced membrane. This technique is reliable to avoid graft and microsurgery in emergency.

Treatment of distal radius fractures with locking plates: an update

Internal fixation with volar locking plates has revolutionized the treatment of distal radius fractures. Manufacturers have introduced plate designs that closely follow the anatomy of the distal radius. However, use of volar plates has also led to the emergence of new types of complications. While the use of monoaxial or polyaxial locking screws and of minimally invasive techniques (arthroscopy, preservation of pronator quadratus) increases the cost of the surgical procedure, it results in a tangible benefit for patients, allowing them to move their wrist almost immediately after surgery and to quickly regain their autonomy. We reviewed the literature to analyze the level of proof.