In adults, mallet finger is a traumatic zone I lesion of the extensor tendon with either tendon rupture or bony avulsion at the base of the distal phalanx. High-energy mechanisms of injury generally occur in young men, whereas lower energy mechanisms are observed in elderly women. The mechanism of injury is an axial load applied to a straight digit tip, which is then followed by passive extreme distal interphalangeal joint (DIPJ) hyperextension or hyperflexion. Mallet finger is diagnosed clinically, but an X-ray should always be performed. Tubiana's classification takes into account the size of the bony articular fragment and DIPJ subluxation. We propose to stage subluxated fractures as stage III if the subluxation is reducible with a splint and as stage IV if not. Left untreated, mallet finger becomes chronic and leads to a swan-neck deformity and DIPJ osteoarthritis. The goal of treatment is to restore active DIPJ extension. The results of a six- to eight-week conservative course of treatment with a DIPJ splint in slight hyperextension for tendon lesions or straight for bony avulsions depends on patient compliance. Surgical treatments vary in terms of the approach, the reduction technique, and the means of fixation. The risks involved are stiffness, septic arthritis, and osteoarthritis. Given the lack of consensus regarding indications for treatment, we propose to treat all cases of mallet finger with a dorsal glued splint except for stage IV mallet finger, which we treat with extra-articular pinning.

Minimally invasive plate osteosynthesis (MIPO) has been used in wrist surgery for several years. The purpose of this retrospective study was to compare clinical and radiologic outcomes of MIPO technique with those of a conventional approach in the treatment of metadiaphyseal distal radius fracture by long volar plating. Our series consisted of 32 fractures in 31 patients, mean age 63.9 years, including 16 men and 15 women. MIPO technique was used in 15 wrists (group 1) and conventional approach (> 60 mm of skin incision) in 17 wrists (group 2). In group 1, a long volar plate was inserted under pronator quadratus through a 15- to 30-mm distal incision then fixed to the epiphysis of the distal radius. Then, through a 15- to 30-mm proximal incision, the plate was fixed to the diaphysis of the radius, thus reducing the fracture. In group 1, mean distal incision size was 23.5 and 16.9 mm for proximal one. Mean total scar size (sum of both distal and proximal incisions) was 40.0 mm in group 1 and 84.1 mm in group 2. Mean tourniquet time was 58.4 minutes in group 1 and 68.9 minutes in group 2. At latest follow-up, no significant difference was noted in both the groups concerning pain, quick-DASH score, grip strength, ROM, and radiologic data. One extensor pollicis longus rupture treated by tendon transfer was done in group 1. The MIPO technique for metadiaphyseal fractures of the distal radius by long volar plating has cosmetic and economic advantages compared with the conventional approach. Conversion to conventional approach is possible at any time in case of technical difficulties. III.

The goal of this study was to evaluate the role of conservative treatment of distal radius fractures in the elderly since 2000. Our series included 22 articles, of which 3 reviews, 2 meta-analyses, 6 descriptive series of conservative treatment, 10 series comparing surgical and conservative treatments and 1 series comparing different types of conservative treatments. The reduction was performed by closed reduction in 7 cases and by traction in 3 cases. A short-arm cast was used in 8 cases and a long-arm cast in 4 cases for an average length of 6 weeks. The indications of conservative treatment were varied: AO type A fractures in 2 cases, type C fractures in 1 case, types A and C in 8 cases and types A, B and C in 3 cases. No article reported any significant difference between surgical and conservative treatments in terms of DASH or PRWE, whereas strength was sometimes improved when surgical treatment was used. Radiological results were always better after surgical treatment. The rate of complications varied greatly, greater, equally or lower compared to conservative treatment depending on the series. All in all, there is no consensus to assert that a conservative treatment is more justified than a surgical treatment to treat distal radius fractures after the age of 65. Most authors consider that the long-term clinical outcome is identical and that the radiological result is better after surgical treatment. The fact that the fixation of a distal radius fracture by a volar locking plate after 65 years speeds up the recovery remains to be proven.

III.