[Comparison of the Results of Lundborg's and Sirotakova's Resection-Suspension Arthroplasty for the Treatment of Trapeziometacarpal Joint Osteoarthritis]. / Vergleich der Ergebnisse der Resektions-Suspensionsarthroplastik nach Lundborg und Sirotakova zur Behandlung der Rhizarthrose.

BACKGROUND AND AIMS: The aim of this prospective randomised study was to compare Sirotakova's and Lundborg's methods of resection-suspension arthroplasty using the abductor pollicis longus tendon in the surgical treatment of osteoarthritis of the trapeziometacarpal joint. PATIENTS AND METHODS: Between 2009 and 2012, 38 patients (29 female, 9 male) with symptomatic trapeziometacarpal osteoarthritis (34% stage II, 58% stage III and 8% stage IV according to the Eaton-Littler classification) were randomly allocated to one of the surgical methods (mean age 62.7 years, range 43-85). Preoperatively, the following data were collected: pain intensity (Visual Analogue Scale, VAS; at rest: Lundborg 4.4±1.7; Sirotakova 4.6±2.1), strength (key pinch force Lundborg 8.1 kPa±6.6; Sirotakova 10.4 kPa±10.8), range of motion in the trapeziometacarpal joint (Lundborg 61.64±26.4; Sirotakova 46.67±25.6), Kapandji index (Lundborg 9.42±1.4; Sirotakova 9.33±1.5), distance between the base of the first metacarpal bone and the scaphoid bone as measured by standardised x-ray images (Lundborg 12 mm±1.5; Sirotakova 11.4 mm±3), DASH questionnaire (Lundborg 40.4±13.9; Sirotakova 49.9±23.5). A significant difference between the 2 groups was not found. Patients were examined 3 and 9 months postoperatively. RESULTS: Both resection-suspension arthroplasty procedures led to a statistically significant postoperative reduction of pain, a significant improvement in radial and palmar abduction, a significant gain in quality of life and significant asymptomatic proximalisation of the first metacarpal bone. There was no significant difference in postoperative strength. CONCLUSION: Both methods lead to reliable and satisfying results. Given our findings we cannot generally recommend one method over the other.

Comparison of the Radiation Dose from Cone Beam Computed Tomography and Multidetector Computed Tomography in Examinations of the Hand.

PURPOSE: Comparison of radiation dose of cone beam computed tomography (CBCT) and multidetector computed tomography (MDCT) in examinations of the hand. MATERIALS AND METHODS: Dose calculations were carried out by means of Monte Carlo simulations in MDCT and CBCT. A corpse hand was examined in a 320-row MDCT scanner and a dedicated extremities CBCT scanner with standard protocols and multiple low-dose protocols. The image quality of the examinations was evaluated by 5 investigators using a Likert scale from 1 (very good) to 5 (very poor) regarding depiction of cortical bone, cancellous bone, joint surfaces, soft tissues and artifacts. For a sum of ratings of all structures < 50 a good overall image quality was expected. The studies with at least good overall image quality were compared with respect to the dose. RESULTS: The dose of the standard examination was 13.21 (12.96 to 13.46 CI) mGy in MDCT and 7.15 (6.99 to 7.30 CI) mGy in CBCT. The lowest dose in a study with good overall image quality was 4.54 (4.43 to 4.64 CI) mGy in MDCT and 5.72 (5.59 to 5.85 CI) mGy in CBCT. CONCLUSION: Although the dose of the standard protocols in the CBCT is lower than in the MDCT, the MDCT can realize a good overall image quality at a lower dose than the CBCT. Dose optimization of CT examination protocols for the hand is useful in both modalities, the MDCT has an even greater potential for optimization. KEY POINTS: • Low dose examinations of the hand are feasible in CBCT and MDCT.• In default settings CBCT has a lower dose than MDCT.• MDCT enables a good image quality at a lower dose than CBCT. Citation Format: • Neubauer J, Neubauer C, Gerstmair A et al. Comparison of the Radiation Dose from Cone Beam Computed Tomography and Multidetector Computed Tomography in Examinations of the Hand. Fortschr Röntgenstr 2016; 188: 488 - 493.

[Application possibilities and initial experience with digital volume tomography in hand and wrist imaging]. / Digitale Volumentomografie (DVT) des knöchernen Handskeletts: Erste Erfahrungen und Anwendungsmöglichkeiten.

During the last decade, DVT (digital volume tomography) imaging has become a widely used standard technique in head and neck imaging. Lower radiation exposure compared to conventional computed tomography (MDCT) has been described. Recently, DVT has been developed as an extremity scanner and as such represents a new imaging technique for hand surgery. We here describe the first 24 months experience with this new imaging modality in hand and wrist imaging by presenting representative cases and by describing the technical background. Furthermore, the method's advantages and disadvantages are discussed with reference to the given literature.

Diltiazem provides anti-ischemic and anti-arrhythmic protection in patients undergoing coronary bypass grafting.

In 91 patients undergoing elective coronary bypass grafting, the anti-ischemic and anti-arrhythmic efficacy of a 24-hour infusion of either the calcium antagonist diltiazem (0.1 mg/kg per h, n = 44) or nitroglycerin (1 micrograms/kg per min, n = 47) were compared. Myocardial ischemia was diagnosed by Holter monitoring and the repeated assessment of 12-lead ECG and serum enzyme levels and defined as a transient ischemic event, transient coronary spasm or myocardial infarction. The two groups did not differ with respect to preoperative and operative data. Postoperatively, the average heart rate and pulse pressure rate were significantly lower in the diltiazem group. The incidence of postoperative atrial fibrillation (4.5 vs 19.1%, P < 0.01), transient coronary spasm (2.3 vs 11.4%, P < 0.05) and myocardial infarction (4.5 vs 8.5%, not significant) and the frequency of ventricular premature couplets/h (12.1 +/- 4.5 vs 18.1 +/- 5.1, P < 0.05) and ventricular runs/h (2.5 +/- 0.8 vs 6.5 +/- 2.8, P < 0.05) were lower in the diltiazem as compared to the nitroglycerin group. In addition, diltiazem-treated patients had significantly lower postoperative peak values of creatine kinase-MB (19.3 +/- 11.6 vs 29.3 +/- 20.6, P < 0.05). In conclusion, perioperative infusion of diltiazem is effective in reducing the incidence and extent of arrhythmias and myocardial ischemia in patients undergoing elective coronary bypass grafting as compared to patients receiving nitroglycerin.

[Soft tissue reconstruction with a temporoparietal fascial flap (TPFF)]. / Der temporoparietale Faszienlappen zur Rekonstruktion von Weichteildefekten.

OBJECTIVE: Soft tissue reconstruction with a temporoparietal fascial flap (TPFF). INDICATIONS: Defect coverage with thin, pliable, and well-vascularized tissue. A bilayered TPFF provides a gliding surface in tendon reconstruction. Further options include TPFF harvest with overlying skin or subjacent bone for composite tissue reconstruction or the application as a sensate local fascial flap. Maximum defect dimensions: 17 × 14 cm. CONTRAINDICATIONS: Absolute: prior injury to the flap or flap pedicle, temporal arteritis, Moyamoya syndrome, defects with volume deficit. Relative: alopecia along the planned incision. SURGICAL TECHNIQUE: Pedicle location is outlined using Doppler ultrasound. Injection of the incision line with diluted epinephrine solution. Skin incision with subsequent visualization of the temporoparietal fascia and supplying vessels. Skin flaps are raised carefully paying special attention to the hair follicles (CAVE: postoperative alopecia). Primary closure of the donor site. Defect coverage with pedicled or free TPFF with subsequent full or split-thickness skin grafting. Dressing: Bolster or V.A.C. POSTOPERATIVE MANAGEMENT: Immobilization/elevation in the setting of extremity reconstruction. Removal of bolster dressing or V.A.C. on postoperative day 5. Dangling protocol instituted on postoperative day 7. Removal of sutures/staples at the donor site on postoperative day 5-7 and at the recipient site on postoperative day 12-14. RESULTS: The TPFF was utilized for soft tissue reconstruction in 8 patients. A pedicled TPFF was used in 2 patients. Mean time to healing was 16.3 days. Mean follow-up was 13.4 months. Successful reconstructive results with satisfactory functional and aesthetic appearance were obtained in all patients. Complications were encountered in 3 patients and included alopecia at the donor site and iatrogenic injury to the frontal branch of the facial nerve. Vascular compromise was observed in the early postoperative period in a third patient. However, operative revision resulted in successful flap salvage.

Benign fibrous histocytoma of the distal radius: a report of a case and a review of the literature.

Benign fibrous histocytoma of bones is a very rare tumour and only a few cases have been reported. We report a case of 40-year-old patient with no significant previous medical history who presented with a painful lesion in his right wrist joint. Incision biopsy was done and there was a histological picture similar to a metaphyseal fibrous defect (non-ossifying fibroma). This was managed with excision of the lesion and filling the defect with cancellous and cortical bone grafts from the left iliac bone. To our knowledge, this is the second case report of a benign fibrous histocytoma involving the distal radius in adult. In this case report, we review similar cases in the literature and discuss the differential diagnoses of this lesion.

[Stump forming after traumatic foot amputation of a child--description of a new surgical procedure and literature review of lawnmower accidents]. / Stumpfbildung nach traumatischer Fussamputation beim Kind--Beschreibung eines neuen Operationsverfahrens und Literaturrecherche von Rasenmäherunfällen.

AIM: Amputation injuries in children occur in motor vehicle, farming and, importantly, lawn mower accidents. Treatment of lawn mower related injuries is complicated by gross wound contamination, avascular tissue, soft tissue defects and exposed bone. Many treatment options exist and often an adequate prosthetic supply is needed for rehabilitation. We report on an 8-year old boy who got under a ride-on lawn mower and sustained a subtotal amputation of his right foot. After initial surgery an amputation was subsequently necessary. For this, it had to be taken into account that the traumatic loss of the talus, calcaneus and parts of the cuboid bone would result in a length shortening of the right leg and so far not injured metatarsal and tarsal bones had to be sacrificed. Thus, we aimed to develop a new operation technique to optimize stump length as well as preserve tarsal bones and the possibility of limb growth. METHOD: In order to achieve this, we performed a new stump forming operation in which we integrated uninjured tarsal and metatarsal bones. First a Lisfranc's amputation was performed and a metatarsal bone was kept aside. The talus, calcaneus as well as the cuboid bone were either completely or almost completely destroyed and were removed. The remaining cuneiform bones were transfixed by a notched metatarsal bone, thus achieving a tarsal arthrodesis, and the cartilages of the proximal joint surfaces were removed. The cartilage of the cranial and caudal navicular as well as the distal tibial joint surface was also removed and an arthrodesis between the distal tibia and the navicular bone was achieved by crossed Kirschner wires. Finally the cuneiform bones were placed inferior to the navicular bone. Further stump coverage was managed by skin and muscle flaps as well as split skin graft. RESULT: Our patient was discharged on day 34. A fluent gait without crutches as well as sports activities were possible again as early as 6 1/2 months after the injury. CONCLUSION: Using our stump forming technique we hope to prevent some complications of amputation injuries. Because of the intact epiphysis a bone overgrowth is hopefully prevented and growth potential is preserved and by inclusion of tarsal and metatarsal bones in the stump formation a length discrepancy is minimized.