François Loisel

Technical note: How to spare the pronator quadratus during MIPO of distal radius fractures by using a mini-volar plate.

Few surgical approaches have been described that spare the pronator quadratus (PQ) during the treatment of distal radius fractures. The PQ supplies blood to the distal radial epiphysis, helps stabilize the distal radio-ulnar joint, and contributes 21% of pronation strength. Sparing the PQ should result in faster bone union and shorter recovery time. To achieve these goals, we currently use a minimally-invasive volar procedure using a specially-designed short plate (APTUS Wrist 2.5 XS, Medartis(©)). A 20mm incision is made over the fracture line as described by Henry. The PQ is dissected and then detached from the volar side of the radius. Forceps are used to slide the plate under the muscle. The screws are locked after carefully elevating the distal edge of the PQ. A preliminary study of distal radius fracture fixation by this technique was performed in 31 patients. The scar was 26mm in length and the duration of surgery was 34minutes on average. Patients wore a removable brace for 15 days, and passive wrist motion without loading was allowed during the first week. Functional recovery was faster than seen in previously published series. An average Quick DASH score of 10 was achieved by the 10th post-operative week. Although there are no contraindications to this technique, the quality of the reduction is more important than the scar size and desire to spare the PQ. Never hesitate to convert the incision to a classical Henry approach if technical difficulties arise. Our technique seems best suited to patients with high functional demands. It is currently being evaluated in a prospective series.

High-energy injuries of the wrist

High-energy injuries to the wrist gather complex fractures of the distal radius, radiocarpal dislocations, perilunate dislocations, and other intracarpal dislocations. Depending on the energy of the injury and the position of the wrist at the time of impact, the patient, often a young male with a high functional demand, presents one of these injuries associating fracture(s) and ligament injury. The trauma is often bilateral, with proximal lesions (elbow) very often associated with contusion or compression of the median nerve. Diagnosis is confirmed by wrist X-rays, which are sufficient to determine treatment for radiocarpal and perilunate dislocations. In cases of distal radius fractures or other intracarpal dislocations, a preoperative CT is necessary. Reduction of the dislocation and relief of neurovascular compression are performed immediately. The final treatment of each lesion (bone fixation, ligament repair) can be undertaken simultaneously or delayed, depending on the patient and the lesions. Cartilage lesions, resulting from the high-energy injury, can be estimated using arthroscopy but cannot be repaired and determine the prognosis. The surgeons objective is to restore joint congruence, which does not prevent stiffness, the main complication of these rare injuries, which the surgeon must know how to recognize and treat.

Functional and radiographic evaluation of the treatment of traumatic bone loss of the hand using the Masquelet technique.

This study was a retrospective evaluation of 18 patients with traumatic bone loss affecting the fingers, hand and wrist who were treated using the induced-membrane technique. Sixteen men and two women, mean age 54years (27-74) presented a hand injury including bone loss. Sixteen patients were treated on an emergency basis and two following nonunion of their fractures. There were 13 cases of open fracture of the phalanx and 5 cases of metacarpal fractures. These patients were treated with debridement and the injuries were covered when necessary. To address the bone loss, the first step of the induced-membrane technique involved placing a cement spacer (polymethylmethacrylate [PMMA]) without antibiotics in the defect. During the second step, the cement spacer was removed and replaced by autologous cancellous bone graft. The graft was placed within the biological tube left empty after removal of the cement. For each patient, bone union was assessed with radiographs and/or CT scan. Failure was defined as nonunion at 1year. In 16 patients, the fractures had healed after 4months (1.5-12months) on average. Two failures were noted (one nonunion treated using a PIP prosthesis and one case of delayed union). Mobility of the fingers, evaluated using the Total Active Motion (TAM) was 145° (75°-270°). The Kapandji score reached 8 for the thumb. Grip strength reached 21kg/F and pinch strength was 5kg/F; these values were 50% of those in the healthy hand. The induced-membrane technique is simple and can be used to treat traumatic bone loss in an emergency, thus avoiding amputation and limb shortening, while preserving limb function. It provides immediate stability and allows early mobilization.

Cadaver study of the topography of the musculotendinous junction of the finger extensor muscles: applicability to tendon rupture following closed wrist trauma

Rupture of the extensor pollicis longus (EPL) tendon in the wrist is a delayed complication that can occur after wrist injury. Several etiology-related hypotheses have been made to explain these ruptures. The one most commonly accepted is necrosis at the musculotendinous junction of the EPL, which is compressed between the extensor retinaculum and dorsal aspect of the radius. To confirm this hypothesis, we performed an anatomical study to show the close relationship between the extensor retinaculum and the musculotendinous junction of the EPL muscle. We calculated the distance between the musculotendinous junction of the various finger extensor muscles and the proximal edge of the extensor retinaculum. We were able to show that this junction is located under the extensor retinaculum for the extensor indicis (EI) and EPL muscles, but the latter is in the third extensor compartment, which is a tight, confined space. Any pressure increase in this space following trauma, for example, can bring about compartment syndrome at this musculotendinous junction, which some authors have found to be poorly vascularized.

Distal radius anatomy applied to the treatment of wrist fractures by plate: a review of recent literature

Few studies on the anatomy of the radial epiphysis have been published in the past 10 years. However, with the availability of new intra- and extra-medullary implants and the recent rash of avoidable iatrogenic injuries, now is the time for a more detailed description of the metaphyseal-epiphyseal regions in the distal radius. Published studies on distal radius anatomy in recent years have focused on three aspects: distal limit and watershed line, dorsal tubercle, and wrist columns. Furthermore, a fresh look at distal radius biomechanics shows that the loads experienced by the distal radius vary greatly. This information should be taken into account during volar plating of distal radius fractures.

Adjonction d’antithrombotiques in situ en cas de replantation digitale : étude prospective préliminaire de 13 cas

Antithrombotic agents are not routinely used in microsurgery for finger replantation. A prospective monocentric study of 13 cases of replantation at hand level is reported with local irrigation of anastomosis with urokinase and low-molecular-weight heparin. Thirteen consecutive patients have been included and treated in the first six hours by three senior surgeons in microsurgery. The injuries consisted in one devascularisation of hand, two complete amputations of hand, four ring fingers and six complete amputations of finger. Crush injury was always pointed in case of amputation. During anastomoses, the arterial lumina were topically irrigated with 50,000 UI of urokinase and the venous lumina by 1.2 ml of Lovenox®. Bleeding was encouraged in case of digit replantation. In all cases, patients received Aspegic® 10mg/day and Fonzylane® three times per day for three weeks. Three failures have been reported and blood transfusion was necessary in one patient. The results showed that topical irrigation with urokinase and low-molecular-weight heparin or enoxaparin solution significantly reduced the thrombosis rate at the anastomosis site of the crushed arteries in clinical practice without uncontrolled adverse effect.

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.

CT scan evaluation of glenoid bone and pectoralis major tendon: interest in shoulder prosthesis

Introduction: The shoulder arthroplasty brings satisfaction to patients in terms of quality of life and indolence. However whether anatomic implant or reverse, it does not escape from the loosening of the glenoid component. Moreover, optimal implantation is required to ensure the functional outcome without shortening of the arm. The purpose of this study is obtain CT scan evaluation of the glenoid bone stock in order to optimize glenoid component implantation and obtain a reference to determine optimal humeral component placement in case of humeral proximal fracture. Materials and methods: Between 2010 and 2011 we have analyzed 200 intact shoulder’s CT. We measured maximal and minimal width in the transverse plane of the glenoid, the distance from the pectoralis major (PM) tendon to the humeral head, the greater tubercle, change of curvature and the anatomical neck. Results: Mean maximum width was 27.4 ± 3.4 mm and mean minimum width was 15.5 ± 2.8 mm. Distances between upper edge of PM tendon to: humeral head, greater tubercle, change of curvature and anatomical neck were respectively: 67.6 ± 9.98 mm, 57.8 ± 10.3 mm, 28.7 ± 9 mm, and 34.2 ± 9.7 mm. Conclusion: Our study has produced an assessment of glenoid bone stock for optimal positioning of the glenoid implant but also to obtain a reference to determine the ideal location of the humeral component in the case of proximal humerus fracture.

Burnout syndrome in orthopaedic and trauma surgery residents in France: A nationwide survey

BACKGROUND Burnout syndrome is one of the manifestations of distress in healthcare workers and is characterised by emotional exhaustion (EE), depersonalisation (DP), and a sense of low personal accomplishment (PA). The surgical residency is a period of intense training that imposes major challenges on future surgeons, who may therefore be at high risk for burnout syndrome. Nevertheless, no data on burnout syndrome in orthopaedic and trauma surgery (OTS) residents in France is available. Therefore we performed a prospective survey to: (1) evaluate the prevalence of burnout syndrome among OTS residents in France, (2) and to look for factors associated with a higher or lower risk of burnout syndrome in the survey respondents. HYPOTHESIS Burnout syndrome is at least as prevalent among OTS residents in France as among residents in other medical and surgical specialities. MATERIAL AND METHODS A nationwide prospective survey was conducted in France between February and April 2017 via a digital questionnaire sent by email. Burnout syndrome was evaluated using the Maslach Burnout Inventory (MBI) and symptoms of depression using the General Health Questionnaire (GHQ-12). Demographic data and information on relationships with partners and working modalities were collected. RESULTS Of 480 OTS residents, 107 (22%) completed the questionnaire. Mean age was 27 years and 65% (n=70) were male. High EE was reported by 26% (n=28), high DP by 63% (n=68), and low PA by 33% (n=36) of respondents. The scores on two or all three of the MBI sub-scales were abnormal, indicating severe burnout syndrome, in 40% (n=43) of respondents. The GHQ-12 scores indicated symptoms of depression in 40% (n=43) of respondents. Furthermore, 61% (n=66) of respondents stated that they would not recommend OTS or any other area of medicine to their children as a career and 10% (n=11) reported suicidal ideation during the past year. The statistical analysis identified three risk factors for burnout syndrome: medical errors (odds ratio [OR], 8.8; 95% confidence interval [95%CI], 1.7-58.7; p=0.0121), symptoms of depression (OR, 19.3; 95%CI, 2.9-196.0; p=0.0048), and living single (OR, 4.7; 95%CI, 1.4-18.9; p=0.0173). DISCUSSION Despite the 22% response rate, this study provides useful information on the prevalence of burnout syndrome among OTS residents in France, with severe burnout in 40% and suicidal ideation in 10%. These prevalences may be overestimations, however, as residents who felt under stress may have been more likely to respond to the survey. In published studies, burnout syndrome was associated with higher risks of medical error and suicidal behaviour. These data emphasise the importance of detecting and managing burnout syndrome in healthcare staff. LEVEL OF EVIDENCE IV Prospective descriptive cross-sectional survey with no control group.