Dental implants have become an accepted form of permanent tooth replacement. Nearly all implants currently being placed are of the osseo-Abbreviation: 3D = three-dimensional Index terms: Computed tomography (CT), computer programs, 24. 1 274 #{149} Jaws, CT, 24. 1274 #{149} Stents and prostheses

This study evaluated the use of risk prediction models in estimating short- and mid-term mortality following proximal hip fracture in an elderly Austrian population. Data from 1101 patients who sustained a proximal hip fracture were retrospectively analyzed and applied to four models of interest: Physiological and Operative Severity Score for the enUmeration of Mortality and Morbidity (POSSUM), Charlson Comorbidity Index, Portsmouth-POSSUM and the American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP®) Risk Score. The performance of these models according to the risk prediction of short- and mid-term mortality was assessed with a receiver operating characteristic curve (ROC). The median age of participants was 83 years, and 69% were women. Six point one percent of patients were deceased by 30 days and 15.2% by 180 days postoperatively. There was no significant difference between the models; the ACS-NSQIP had the largest area under the receiver operating characteristic curve for within 30-day and 180-day mortality. Age, male gender, and hemoglobin (Hb) levels at admission <12.0 g/dL were identified as significant risk factors associated with a shorter time to death at 30 and 180 days postoperative (p < 0.001). Among the four scores, the ACS-NSQIP score could be best-suited clinically and showed the highest discriminative performance, although it was not specifically designed for the hip fracture population.

Background: Insertional Achilles tendinopathy (IAT) is a painful pathology in which the strongest and thickest tendon of the human body is affected. Different conservative and operative treatments have been described to address this pathology. This study aimed to evaluate the medium-term clinical and radiological outcomes of patients who underwent a surgical therapy via a longitudinal tendon-splitting approach with debridement and double-row refixation. Methods: All patients were assessed pre- and postoperatively using a visual analog scale (VAS), the American Orthopaedic Foot & Ankle Society (AOFAS) Hindfoot Score, the Foot and Ankle Outcome Score (FAOS), and the Foot Function Index (FFI). Additionally, a lateral radiograph of the foot was performed to assess the postoperative result. Forty-two patients with confirmed IAT who underwent surgery between 2013 and 2017 with a longitudinal tendon-splitting approach and tendon refixation using a double-row refixation system were evaluated. The average follow-up was 32.8 (range, 18-52) months. We included 26 female and 16 male patients with an average age of 56.8 (range, 27-73) years. Results: The mean VAS improved from 8.91 ± 1.0 preoperatively to 1.47 ± 2.5 postoperatively ( P < .01). AOFAS scores improved significantly from 51.0 ± 12.5 preoperatively to 91.3 ± 14.3 postoperatively ( P < .01). All total and subscores of the FFI and FAOS saw a significant improvement at follow-up ( P < .01). Lateral radiographs showed recurrent calcification in 30 patients (71.4%). Conclusion: We found that, at an average of 33 months posttreatment, insertional Achilles tendinopathy via a longitudinal tendon-splitting approach resulted in good outcomes for patients after failure of initial conservative therapy. Recurrent calcification seems to be very common but shows no association with inferior outcomes or the return of symptoms. Level of Clinical Evidence: Level IV, retrospective case series.

Background: The minimally invasive distal metatarsal metaphyseal osteotomy (DMMO) is a percutaneous operative technique with the aim to relieve the symptoms of metatarsalgia. To our knowledge, no previous research has analyzed both pre- and postoperative pedobarographic data including the changes in plantar pressure. Methods: Thirty patients (31 feet) were operated on with a DMMO and included in a prospective study. Clinical, radiologic, and pedobarographic outcomes were evaluated in comparison with the preoperative parameters. The American Orthopaedic Foot & Ankle Society (AOFAS) forefoot score, the Foot Function Index (FFI), the Foot and Ankle Outcome Score (FAOS), and a visual analog scale (VAS) for pain were used in order to assess clinical parameters. Radiographs were taken to compare metatarsal lengths. The pedobarographic analysis served to determine plantar peak pressure (PPP) beneath the metatarsophalangeal (MTP) joints. Results: All scores indicated a significant mean pre- to postoperative improvement (AOFAS = 31.9 points, FAOS = 16.3%, FFI = 24.3%, VAS pain = 4.1 points, VAS general limitation = 3.3 points) ( P < .05). PPP was substantially reduced in the relevant area (M6 [plantar area beneath the second and third MTP joint] had a mean pre to post PPP = 14.15 N/cm2) and concurrently higher in the lateral and medial MTP joint areas (M5 mean pre to post = +14.37, M7 pre to post = +7.11). Our mean metatarsal shortening was 6.6 mm. However, our findings do not demonstrate a significant correlation between metatarsal length relationships and the prevalence of metatarsalgia. Conclusion: Our results demonstrate a significant improvement in clinical scores and PPP. A statistically significant relation between metatarsal length and the prevalence of metatarsalgia was not found in this prospective case series Level of Evidence: Level IV, case series.

Background Intramedullary humeral nailing is a common and reliable procedure for the treatment of humeral shaft fractures. Radial nerve palsy is a common complication encountered in the treatment of this pathology. The radial nerve runs from posterior to anterior at the lateral aspect of the distal humerus. Hence, there is reason to believe that due to the anatomic vicinity of the radial nerve in this area, lateral–medial distal locking in intramedullary nailing of the humerus may be associated with a greater risk for iatrogenic radial nerve injury compared to anterior–posterior locking. Questions/purpose To assess whether the choice of distal locking (lateral–medial versus anterior–posterior distal locking) in intramedullary humeral nailing of humeral shaft fractures affects the risk for iatrogenic radial nerve injury. Patients and methods Overall, 203 patients (116 females, mean age 64.3 ± 18.6 years), who underwent intramedullary nailing of the humerus between 2000 and 2020 at a single level-one trauma center, met the inclusion criteria and were analyzed in this retrospective case–control study. Patients were subdivided into two groups according to the distal locking technique. Results Anterior–posterior locking was performed in 176 patients versus lateral–medial locking in 27 patients. We observed four patients with iatrogenic radial nerve palsy in both groups. Risk for iatrogenic radial nerve palsy was almost 7.5 times higher for lateral–medial locking (OR 7.48, p = 0.006). There was no statistically significant difference regarding intraoperative complications, union rates or revision surgeries between both groups. Conclusions Lateral–medial distal locking in intramedullary nailing of the humerus may be associated with a greater risk for iatrogenic radial nerve palsy than anterior–posterior locking. Hence, we advocate for anterior–posterior locking. Level of evidence Level III retrospective comparative study.

No abstract