Biomechanical comparison of headless compression screws versus independent locking screw for intra-articular fractures.

PURPOSE: Headless compression screws (HCS) have a variable thread pitch and headless design enabling them to embed below the articular surface and generate compression force for fracture healing without restricting movement. Locking screws have greater variety of dimensions and a threaded pitch mirroring the design of the HCS. The objective of this study is to determine whether locking screws can generate compression force and compare the compressive forces generated by HCS versus locking screws. METHOD: A comparison between 3.5-mm HCS versus 3.5-mm locking screws and 2.8-mm HCS versus 2.7-mm locking screws was performed using a synthetic foam bone model (Synbone) and FlexiForce sensors to record the compression forces (N). The mean peak compression force was calculated from a sample of 3 screws for each screw type. Statistical analysis was performed using the one-way ANOVA test and statistical significance was determined to be p = < 0.05. RESULTS: The 3.5-mm Synthes and Smith and Nephew locking screws generated similar peak compression forces to the 3.5-mm Acutrak 2 headless compression screws with no statistically significant difference between them. The smaller 2.7-mm Synthes and Smith and Nephew locking screws initially generated similar compressive forces up to 1.5 and 2 revolutions, respectively, but their peak compression force was less compared to the 2.8-mm Micro Acutrak 2 HCS. CONCLUSION: Locking screws are able to generate compressive forces and may be a viable alternative to headless compressive screws supporting their use for intra-articular fractures.

Talar neck and body fracture outcomes: a multicentre retrospective review.

PURPOSE: Talar neck and body fractures are uncommon injuries that are challenging to manage with high reported complication rates, including post-traumatic arthritis, avascular necrosis, and poor functional outcomes. The aim of this study was to assess the complication rates for patients with talus fractures across three major trauma centres (MTCs) in England. METHODS: A retrospective analysis was performed of prospectively collected trauma databases. Data were collected from three English MTCs. Patients with talar neck and/or body fractures sustained between August 2015 and August 2019 were identified and their clinical course reviewed radiologically and clinically. Isolated process fractures, osteochondral defects and paediatric patients were excluded. Patients were analysed by fracture type and for definitive treatment method with separation into non-operative and operative management groups. Procedure type was identified in the operative group. Superficial infection, deep infection, non-union, avascular necrosis, post-traumatic arthritis and removal of metalwork rates were analysed. RESULTS: Eighty-five patients with talar neck and/or body fractures were included. Seventy-five patients received operative management, 10 non-operative. The overall AVN rate was 5.9% (five patients), overall post-traumatic arthritis rate was 18.8% (16 patients), deep infection rate 1.2% (one patient), non-union rate 4.7% (four patients). Removal of metalwork rate was 9.4% (eight patients). CONCLUSION: Our reported outcomes and complication rates are generally lower than those previously described. This may be a result of improved techniques, a higher frequency of open reduction with direct visualisation or by surgery occurring in centralised specialist centres.

Coronal shear fractures of the distal humerus managed according to the Modified Dubberley Classification System.

BACKGROUND: Coronal shear fractures of the capitellum and trochlea are relatively uncommon and can be challenging to treat because of variable articular comminution and poor bone stock. Classification is valuable to help guide surgical decision making and prognosis. The aim of this study was to present a large series of coronal shear fractures treated according to the Modified Dubberley Classification System (MDCS). METHODS: Forty-five patients with a coronal shear fracture were followed up (12-93 months, mean: 28 months) after surgical intervention. Fractures were classified according to the MDCS by 3 observers, and outcome data collected included Oxford elbow score (OES), visual analog pain score (VAS), range of motion, complications, and radiographic findings. RESULTS: There were 10 type 1, 12 type 2, 8 type 3, and 15 type 4 fractures. There were 26 subtype B fractures (posterior comminution). A total of 37 patients underwent open reduction and internal fixation (ORIF) and 8 primary arthroplasty. The median OES and VAS were 43(16-48) and 2 (0-9), respectively. Median flexion extension arc was 125° (range, 70°-140°). There was no significant difference in OES, VAS, or range of motion according to fracture type (types 1-4), subtype (type a or b), or treatment method (arthroplasty vs. ORIF). The overall complication and reoperation rates were 31% and 33%, respectively. A total of 75% of complications occurred in type 3 and 4 fractures, and there was a nonsignificant trend toward higher complication rate in type B fractures than type A fractures (34% vs. 16%, P = .19). Patients with a type B fracture who underwent screw-only fixation had a significantly lower OES and higher complication rate compared with when they had combined plating with screws (OES, P = .03; complications P = .04) and compared with when an arthroplasty was performed (OES, P = .05; complications P = .04). CONCLUSION: Consistently good outcomes can be achieved by classification and management according to the MDCS. It is recommended that type B fractures undergo combined plate and screw fixation and that type 4 fractures should be considered for arthroplasty because of the higher risk of complications with ORIF.

Standardised virtual fracture clinic management of Achilles tendon ruptures is safe and reproducible.

BACKGROUND: Traditional fracture clinics are some of the busiest clinics in a hospital, often with significant patient waiting times and delays. The use of virtual fracture clinic (VFC) for the management of certain injuries to reduce the workload on the traditional fracture clinic, in addition to reducing costs is growing in popularity. The tendoachilles is the most frequently ruptured tendon in the body but despite this, management remains a keenly debated topic. METHODS: All adult patients referred to the VFC with an actual or suspected Achilles tendon rupture were identified between January 2015 to October 2017. RESULTS: This study found that patient with and acute achilles tendon ruptures managed according to a standardised VFC protocol had a re-rupture rate of 3.82%. CONCLUSIONS: One of the advantages of a VFC model that is standardised, initiated in the ED, is that it has no variation in outcome seen in our patient group.

Primary Ankle Fusion Using an Antegrade Nail Into the Talus for Early Treatment of OTA Type C3 Distal Tibial Plafond Fractures: A Preliminary Report.

BACKGROUND: Type C3 distal tibial plafond fractures consistently show poor outcomes with high complication rates and significant risk of posttraumatic arthritis. We describe a minimally invasive technique of performing a primary ankle fusion using an anterograde tibial nail and compare our early results to traditional methods of fixation. METHODS: During the acute admission, the patient undergoes an arthroscopic preparation of the ankle joint and insertion of an anterograde nail into the talus. This technique is described in detail and presented alongside a retrospective 5-year review of all adult C3 distal tibial plafond fractures from our center. RESULTS: Twenty-six patients (8 open fractures) had been fixed traditionally using open reduction internal fixation (24 patients) and circular frames (2 patients) with an average follow-up of 20 months. Those internally fixed had protected weightbearing for 3 months. Complications included deep infection (12%), nonunion (8%), malunion (4%), severe posttraumatic osteoarthritis (27%), and the secondary conversion to ankle replacement/fusion (12%) requiring an average of 3 reoperations.Six patients underwent primary fusion (3 open fractures) with an average follow-up of 18 months. Patients were allowed to immediately weightbear. There were no reported complications and the primary fusion group demonstrated shorter hospital stays, faster return to work, and higher mean self-reported foot and ankle score (SEFAS) compared to those treated with ORIF. CONCLUSION: C3 distal tibial plafond fractures are difficult to manage and there has not been a satisfactory method of treating them that allows early return to work, has a low risk of complications, and reduces the risk of posttraumatic tibiotalar arthritis.We present our initial results with a method that uses traditional arthroscopic techniques to prepare the tibiotalar joint together with minimally invasive anterograde tibiotalar nailing. In this initial report of a small group of patients, we found that surgery can be performed once the swelling has subsided after injury and that allowing weightbearing as tolerated did not appear to have a negative effect on initial outcomes. LEVEL OF EVIDENCE: Level III, retrospective comparative study.

Consensus on managing open ankle fractures in the frail patient.

Aims: Ankle fractures are common injuries and the third most common fragility fracture. In all, 40% of ankle fractures in the frail are open and represent a complex clinical scenario, with morbidity and mortality rates similar to hip fracture patients. They have a higher risk of complications, such as wound infections, malunion, hospital-acquired infections, pressure sores, veno-thromboembolic events, and significant sarcopaenia from prolonged bed rest. Methods: A modified Delphi method was used and a group of experts with a vested interest in best practice were invited from the British Foot and Ankle Society (BOFAS), British Orthopaedic Association (BOA), Orthopaedic Trauma Society (OTS), British Association of Plastic & Reconstructive Surgeons (BAPRAS), British Geriatric Society (BGS), and the British Limb Reconstruction Society (BLRS). Results: In the first stage, there were 36 respondents to the survey, with over 70% stating their unit treats more than 20 such cases per year. There was a 50:50 split regarding if the timing of surgery should be within 36 hours, as per the hip fracture guidelines, or 72 hours, as per the open fracture guidelines. Overall, 75% would attempt primary wound closure and 25% would utilize a local flap. There was no orthopaedic agreement on fixation, and 75% would permit weightbearing immediately. In the second stage, performed at the BLRS meeting, experts discussed the survey results and agreed upon a consensus for the management of open elderly ankle fractures. Conclusion: A mutually agreed consensus from the expert panel was reached to enable the best practice for the management of patients with frailty with an open ankle fracture: 1) all units managing lower limb fragility fractures should do so through a cohorted multidisciplinary pathway. This pathway should follow the standards laid down in the "care of the older or frail orthopaedic trauma patient" British Orthopaedic Association Standards for Trauma and Orthopaedics (BOAST) guideline. These patients have low bone density, and we should recommend full falls and bone health assessment; 2) all open lower limb fragility fractures should be treated in a single stage within 24 hours of injury if possible; 3) all patients with fragility fractures of the lower limb should be considered for mobilisation on the day following surgery; 4) all patients with lower limb open fragility fractures should be considered for tissue sparing, with judicious debridement as a default; 5) all patients with open lower limb fragility fractures should be managed by a consultant plastic surgeon with primary closure wherever possible; and 6) the method of fixation must allow for immediate unrestricted weightbearing.

Thrombo-prophylaxis in pelvic and acetabular trauma patients: a UK consensus?

AIMS: The incidence of deep vein thrombosis, non-fatal pulmonary embolism and fatal pulmonary embolism may be as high as 61%, 10% and 2%, respectively, in patients with pelvic and acetabular injuries. A survey of the pelvic and acetabular units across the United Kingdom was performed to ascertain the thrombo-prophylaxis policy for these patients. In particular, questions were asked about different regimes on post-operative patients, conservatively managed patients and those simply discussed over the telephone. We enquired about their known rates of DVT and PE and their methods of data collection. METHODS: Postal questionnaires were sent to 22 pelvic and acetabular trauma centres around the United Kingdom. RESULTS: Replies from 18 units were received in which a total of 837 operations are performed per year. Forty-five percent of pelvic and acetabular units do not routinely prescribe chemical prophylaxis for post-operative patients and 56% do not prescribe prophylaxis for conservatively managed patients. The policy of the remaining units showed no consistency in duration or agent. Fifty-three percent of units use a database to collect information related to the numbers of patients operated up on. Forty-seven percent have no defined method for collecting DVT and PE numbers. For this reason, reported rates of proximal DVT, non-fatal PE and fatal PE were below that expected at 2.5%, 0.8% and 0.1%, respectively. CONCLUSIONS: Despite high rates of thrombo-embolic complications in patients with pelvic and acetabular injuries there is no UK consensus on prescribing prophylaxis.

Fibula Nail Outcomes in Soft Tissue Compromised Ankle Fractures.

BACKGROUND: To determine the clinical outcomes following fibula nail fixation and to identify the indication for the use of fibula nails in lower limb fractures. METHODS: Retrospective study of adult patients from 2 major trauma centers (MTCs) and 9 trauma units (TUs) who underwent fibula nail fixation for AO/OTA 44 fractures between January 1, 2018, and October 31, 2020. Outcome measures included infection, metalwork complications, nonunion or malunion, time to union, and length of inpatient hospital stay. RESULTS: Ninety-five patients were included, with a mean age of 66 years; 57.9% of patients were female. The average body mass index was 30. Sixty-nine patients (72.6%) sustained a Weber B and 24 (27.4%) sustained a Weber C fracture. In addition, 26.3% were open fractures and all patients had soft tissue compromise affecting the lateral malleolus. The calculated infection rate for fibula nail was 4.2% and metalwork complication rate was 5.2%. The nonunion and malunion rate was 8.4% and rate of removal of hardware was 2.1%. The average time to union was 12.5 weeks, and length of inpatient stay was 9.4 days (SD 10). CONCLUSION: This multicenter study demonstrates that use of a fibula nail appears to be a safe approach to treating patients who have a physiologically higher risk of surgery, poor skin condition, and a complex fracture pattern. LEVEL OF EVIDENCE: Level III, case-control study.

Displaced intracapsular fracture complicating transient osteopoenia of the hip in pregnancy: timing of surgery.

A patient who presented with a displaced subcapital fracture of the proximal femur in her third trimester of pregnancy is reported. Following delivery of the baby with an emergency caesarean section, the fracture was immediately reduced and fixed using cannulated screws. The outcome of her fracture management for this rare condition is discussed. Only seven cases have been reported in the literature and we review the possibility that this condition may be a systemic rather than a purely localised problem as previously believed.

Lengthening Nails for Distraction Osteogenesis: A Review of Current Practice and Presentation of Extended Indications.

PURPOSE: Circular frames have been the gold standard of treatment for complex deformity corrections and bone loss. However, despite the success of frames, patient satisfaction has been low, and complications are frequent. Most recently, lengthening nails have been used to correct leg length discrepancies. In this article, we review the current trends in deformity correction with emphasis on bone lengthening and present our case examples on the use of lengthening nails for management of complex malunions, non-unions, and a novel use in bone transport. MATERIALS AND METHODS: A nonsystematic literature review on the topic was performed. Four case examples from our institute, Brighton and Sussex University Hospitals, East Sussex, England, UK, were included. RESULTS: New techniques based on intramedullary bone lengthening and deformity correction are replacing the conventional external frames. Introduction of lengthening and then nailing and lengthening over a nail techniques paved the way for popularization of the more recent lengthening nails. Lengthening nails have gone through evolution from the first mechanical nails to motorized nails and more recently the magnetic lengthening nails. Two case examples demonstrate successful use of lengthening nails for management of malunion, and two case examples describe novel use in management of non-unions, including the first report in the literature of plate-assisted bone segment transport for the longest defect successfully treated using this novel technique. CONCLUSION: With the significant advancement of intramedullary lengthening devices with lower complications rates and higher patient satisfaction, the era of the circular frame may be over. HOW TO CITE THIS ARTICLE: Barakat AH, Sayani J, O'Dowd-Booth C, et al. Lengthening Nails for Distraction Osteogenesis: A Review of Current Practice and Presentation of Extended Indications. Strategies Trauma Limb Reconstr 2020;15(1):54-61.

Unusual presentation of a giant cell tumor of the tendon sheath in the foot.

Giant cell tumor of the tendon sheath has frequently been described in the hand, but it is much less common in the foot. The case report presents an apparent cystic bony lesion of the proximal phalanx of the second toe of the foot. The operative findings and histological examination revealed a giant cell tumor of the tendon sheath that had eroded the phalanx. The case demonstrates that in the differential diagnosis of a cystic lesion of bone, extrinsic soft-tissue lesions should be considered.