Can CT-Scan Measurements of Humpback Deformity, Dislocation, and the Size of Bony Cysts Predict Union after Surgery for Scaphoid Nonunion?

Objective Scaphoid fractures are associated with high rates of late- or nonunion after conservative treatment. Nonunion is reported to occur in approximately 10% of all scaphoid fractures. It is known that the union of scaphoid fractures is affected by factors such as location at proximal pole, tobacco smoking, and the time from injury to treatment. Same factors seem to affect the healing after surgery for scaphoid nonunion. While the impact of preoperative humpback deformity on the functional outcome after surgery has been previously reported, the impact of humpback deformity, displacement, and the presence of bony cysts on union rate and time to healing after surgery has not been studied. Purpose The primary purpose of this study is to assess the association of humpback deformity, fragment displacement, and the size of cysts along the fracture line with the union rate and union time, following surgery of scaphoid nonunion. The second purpose of the study is to investigate the interobserver reliability in the evaluation of computed tomography (CT) scans of scaphoid nonunion. Patients and Methods From January 2008 to December 2018, 178 patients were surgically treated in our institution. After exclusion criteria were met, 63 patients with scaphoid delayed- or established nonunion, and preoperative CT scans of high quality (<2mm./ slice), were retrospectively analyzed. There was 58 men and 5 women with a mean age of 30 years (range: 16-72 years). Four orthopaedic surgeons and one radiologist independently analyzed the CT scans. The dorsal cortical angle (DCA), lateral intrascaphoid angle (LISA), the height-to-length ratio, the size of the cysts, and displacement of the fragments were measured. Healing was defined by CT scan, or by conventional X-ray, and status of no pain at clinical examination. Thirty-two of the patients had developed nonunion (>6 months postinjury), while 31 were in a stage of delayed union (3-6 months postinjury). Results Open surgery with cancellous or structural bone graft was the treatment of choice in 49 patients, 8 patients were treated with arthroscopic bone grafting, and 6 patients with delayed union were operated with percutaneous screw fixation, without bone graft. Overall union rate was 86% (54/63) and was achieved after 84 days (12 weeks) (mean). The failure rate and time to healing were not associated with the degree of the humpback deformity, size of the cysts, or displacement of the nonunion in general. However, greater dislocation, and the localization of the nonunion at the scaphoid waist, showed significant influence on the union rate. Dislocation at nonunion site, in the group of the patients who united after surgery, was 2.7 mm (95% confidence interval [CI]: 1.5-3.7), and in the group who did not unite was 4.2 mm (95% CI: 2.9-5.7); p = 0.048). Time from injury to surgery was significantly correlated with time to union ( p < 0.05), but not associated with the union rate ( p < 0.4). Patients treated arthroscopically achieved faster healing (42 days), (standard deviation [SD]: 22.27) as compared with patients treated by open techniques (92 days; SD: 70.86). Agreement among five observers calculated as intraclass correlation coefficient was for LISA: 0.92; for height-to-length ratio: 0.73; for DCA: 0.65; for size of cysts: 0.61; and for displacement in millimeters: 0.24, respectively. Conclusions The degree of humpback deformity and the size of cysts along the fracture line of scaphoid nonunion have no predictive value for the result, neither for the union rate nor the union time after surgery for the scaphoid nonunion. However, larger dislocation of the fragments measured at the scaphoid waist showed lower union rate. Time to healing following surgery is mainly influenced by the time from injury to the surgical treatment and may be influenced by the choice of the surgical technique. Interrater reliability calculation was best with LISA measurements, and worse with the measurements of the dislocation. Level of Evidence This is a Level III, observational, case-control study.

Necrotizing fasciitis and meningitis due to Streptococcus pneumoniae serotype 9 N: a case report.

BACKGROUND: Necrotizing fasciitis is a deep infection of the fascia and subcutaneous tissue with a high mortality rate. Meningitis is an infection of the membranes surrounding the brain with a likewise high mortality rate. Streptococcus pneumoniae is the most frequent cause of bacterial meningitis and it is an extremely rare cause of necrotizing fasciitis. Different subcapsular serotypes of S. pneumoniae are known to have diverse virulence. The serotype 9 N is associated with a high risk of death. CASE PRESENTATION: We report a case of a previously healthy 68-year-old female who presented at our clinic with complaints of pain in her left calf since having experienced a very painful leg cramp 3 weeks prior. Within a few hours after admission, she developed fever, neck stiffness and an altered mental state. Concurrently, the pain in her leg worsened. Upon further examination it was found that she suffered from both meningitis and necrotizing fasciitis due to S. pneumoniae, serotype 9 N. The patient survived and avoided leg amputation. CONCLUSIONS: The patient suffered from two very lethal infections simultaneously. Both of them were caused by S. pneumoniae. We believe that her favorable outcome was, a result of prompt surgical intervention and appropriate antibiotic treatment. Our case underlines the importance of continuous reevaluation of the symptoms and clinical findings in patients with unclear causes of severe illness, especially if the patient's condition changes.

[Treatment of mechanically induced nerve injuries].

Peripheral nerve injury can result in significant morbidity. The gold-standard treatment is currently end-to-end suture and is possible by mobilisation of nerve ends in cases with segmental nerve loss up to 1 cm. In cases of defects above 1 cm nerve autograft is the gold-standard treatment. To avoid donor site morbidity alternative procedures can be used, including conduits, nerve transfers and end-to-side suture. The purpose of this review is to create an overview of the currently available treatments of peripheral nerve injury and the clinical management of patients.

Is one-stop surgery for carpal tunnel syndrome safe? A retrospective long-term follow-up study in a neurosurgical unit in Copenhagen.

OBJECTIVES: The aim of this study was to evaluate one-stop surgery (OSS) for carpal tunnel syndrome (CTS) regarding symptom relief and patient satisfaction. OSS in our setting means only one visit to the hospital for surgery and no hospital appointments for preassessment or follow-up. We hypothesised that relief of symptoms with OSS is comparable with that in non-OSS patients reported in the literature. DESIGN: This is a long-term retrospective follow-up study (56.5 months) of 1003 patients referred for CTS and discharged with or without surgery from an OSS clinic. Of the original cohort, 671 patients completed the long-term follow-up telephone interview. RESULTS: Two-thirds of the patients were free of even minor symptoms following surgery. The symptom relief and patient satisfaction in this study were comparable with results in non-OSS patients reported in the literature. CONCLUSION: The implementation of a clinical pathway and OSS for the management of CTS was safe with good long-term symptom relief and high patient satisfaction.

Acceptable results after venous reconstructive surgery following iatrogenic injuries to the iliofemoral vein segment.

INTRODUCTION: Venous reconstructions after iatrogenic injuries are rarely performed and are associated with a relatively high risk of complications. We present our experiences with venous reconstructive surgery to the iliofemoral vein segment. MATERIAL AND METHODS: We reviewed ten patients with venous injuries evaluating clinical characteristics, operative and postoperative data including location and type of venous injury, operative repair and outcome. Venous injuries either occurred during varicose vein surgery or other kinds of procedures in the region. The injuries were repaired by interposition with a polytetrafluorethylene graft, and after surgery they were treated with an intermittent pneumatic compression device and anticoagulation medicine. Subsequently, patients were evaluated both clinically and by colour duplex scan. RESULTS: The mean patient age was 42.5 years (range 26-61 years) with no reported co-morbidity. The median follow-up was 16 months (range 12-157 months). The 30-day patency rate was 70% and the morbidity rate 40%. At the latest follow-up, the venous patency rate was 90% after supplementary treatment. CONCLUSION: The study shows a satisfactory outcome despite severe iatrogenic injuries to the iliofemoral vein segment. Venous reconstructive surgery should be a centralized task. FUNDING: not relevant. TRIAL REGISTRATION: not relevant.