Aims. The aims of this study were to describe the epidemiology of metacarpal shaft fractures (MSFs), assess variation in treatment and complications following standard care, document hospital resource use, and explore factors associated with treatment modality. Methods. A multicentre, cross-sectional retrospective study of MSFs at six centres in the UK. We collected and analyzed healthcare records, operative notes, and radiographs of adults presenting within ten days of a MSF affecting the second to fifth metacarpal between 1 August 2016 and 31 July 2017. Total emergency department (ED) attendances were used to estimate prevalence. Results. A total of 793 patients (75% male, 25% female) with 897 MSFs were included, comprising 0.1% of 837,212 ED attendances. The annual incidence of MSF was 40 per 100,000. The median age was 27 years (IQR 21 to 41); the highest incidence was in men aged 16 to 24 years. Transverse fractures were the most common. Over 80% of all fractures were treated non-surgically, with variation across centres. Overall, 12 types of non-surgical and six types of surgical treatment were used. Fracture pattern, complexity, displacement, and age determined choice of treatment. Patients who were treated surgically required more radiographs and longer radiological and outpatient follow-up, and were more likely to be referred for therapy. Complications occurred in 5% of patients (39/793). Most patients attended planned follow-up, with 20% (160/783) failing to attend at least one or more clinic appointments. Conclusion. MSFs are common hand injuries among young, working (economically active) men, but there is considerable heterogeneity in treatment, rehabilitation, and resource use. They are a burden on healthcare resources and society, thus further research is needed to optimize treatment. Cite this article: Bone Jt Open 2024;5(8):652–661

Metacarpal fractures represent up to 33% of all hand fractures; of which the majority can be treated non-operatively. Previous research has shown excellent putcomes with non-operative treatment yet surgical stabilisation is recommended to avoid malrotation and symptomatic shortening. It is unknown whether operative is superior to non-operative treatment in oblique or spiral metacarpal shaft fractures. The aim of the study was to compare non-operative treatment of mobilisation with open surgical stabilisation. 42 adults (≥ 18 years) with a single displaced oblique or spiral metacarpal shaft fractures were randomly assigned in a 1:1 pattern to either non-operative treatment with free mobilisation or operative treatment with open reduction and fixation with lag screws in a prospective study. The primary outcome measure was grip-strength in the injured hand in comparison to the uninjured hand at 1-year follow-up. The Disabilities of the Arm, Shoulder and Hand Score, ranges of motion, metacarpal shortening, complications, time off work, patient satisfaction and costs were secondary outcomes. All 42 patients attended final follow-up after 1 year. The mean grip strength in the non-operative group was 104% (range 73–250%) of the contralateral hand and 96% (range 58–121%) in the operatively treated patients. Mean metacarpal shortening was 5.0 (range 0–9) mm in the non-operative group and 0.6 (range 0–7) mm in the operative group. There were five minor complications and three revision operations, all in the operative group. The costs for non-operative treatment were estimated at 1,347 USD compared to 3,834USD for operative treatment; sick leave was significantly longer in the operative group (35 days, range 0–147) than in the non-operative group (12 days, range 0–62) (p=0.008). When treated with immediate free mobilization single, patients with displaced spiral or oblique metacarpal shaft fractures have outcomes that are comparable to those after operative treatment, despite some metacarpal shortening. Complication rates, costs and sick leave are higher with operative treatment. Early mobilisation of spiral or long oblique single metacarpal fractures is the preferred treatment. Trial registration number: ClinicalTrials.gov NCT03067454

Our aim was to explore factors associated with early post operative infection for surgically managed base of 4th/5th metacarpal fractures. We hypothesised that K-wires crossing the 4th and 5th carpometacarpal joint (CMCJ) would be associated with an increased risk of post-operative infection. Data from consecutive patients requiring surgical fixation for a base of 4th/5th metacarpal fracture from October 2016 to May 2021 were collected. Patient demographics, time to surgery, length of surgery, operator experience, use of tourniquet, intra-operative antibiotics, number and thickness of K-wire used, as well as whether or not the K-wires crossed CMCJ joints were recorded. Factors associated with post operative infection were assessed using Chi Squared test and univariable logistic regression using R studio. Of 107 patients, 10 (9.3%) suffered post operative infection. Time to surgery (p 0.006) and length of operation (p=0.005) were higher in those experiencing infection. There was a trend towards higher risk of infection seen in those who had K-wires crossed (p=0.06). On univariable analysis, patients who had wires crossed were >7 times more likely to experience infection than those who didn't (OR 7.79 (95% CI, 1.39 - 146.0, p=0.056). Age, smoking, K-wire size, number of K-wires used, intraoperative antibiotics, tourniquet use and operator experience were not associated with infection. In patients with a base of 4th/5th metacarpal fractures requiring surgical fixation, we find an increased risk of post-operative infection associated with K-wires crossing the CMCJ, which has implications for surgical technique. Larger prospective studies would be useful in further delineating these findings

There is no agreement as to the superiority or specific indications for cast treatment, percutaneous pinning or open fracture fixation for Bennett's fractures of the thumb metacarpal. We undertook this study to compare the outcomes of treatment for patients treated for Bennett's fracture in the medium term. We reviewed 33 patients treated in our unit for a bennett's fracture to the thumb metacarpal with closed reduction and casting. Each patient was matched with a patient treated surgically. Patients were matched for sex, age, Gedda grade of injury and hand dominance. Patients were reviewed at a minimum of 5-years and 66-patients were reviewed in total. Patients were examined clinically and also asked to complete a DASH questionnaire score and the brief Michigan hand questionnaire. Follow up plain radiographs were taken of the thumb and these were reviewed and graded for degenerative change using the Eaton-Littler score. Sixty-six patients were included in the study, with 33 in the surgical and non-surgical cohorts respectively. The average age was 39 years old. In each cohort, 12/33 were female, 19/33 were right-handed with 25% of individuals injuring their dominant hand. In each coort there were 16 Grade 1 fractures, 4 Grade 2 and 13 Grade 3 fractures. There was no difference between the surgically treated and cast-treatment cohorts of patients when radiographic arthritis, pinch grip, the brief Michigan Hand Questionnaire and pain were assessed at final review. The surgical cohort had significantly lower DASH scores at final follow-up. There was no significant difference in the normalised bMHQ scores. Our study was unable to demonstrate superiority of either operative or non-operative fracture stabilization. Patients in the surgical cohort reported superior satisfaction and DASH scores but did not demonstrate any superiority in any other objectively measured domain

Our aim was to ascertain if K-wire configuration had any influence on the infection and complication rate for base of 4th and 5th metacarpal fractures. We hypothesised that in individuals whose wires crossed the 4th and 5th carpometacarpal joint (CMCJ), the rate of complications and infection would be higher. Data was retrospectively analysed from a single centre. 106 consecutive patients with a base of 5th (with or without an associated 4th metacarpal fracture) were analysed between October 2016 and May 2021. Patients were split into two groups for comparison; those who did not have K-wires crossing the CMCJ's and those in whose fixation had wires crossing the joints. Confounding factors were accounted for and Statistical analysis was performed using SPSS version 20 software. Of 106 patients, 60 (56.6%) patients did have K-wires crossing the CMCJ. Wire size ranged from 1.2-2.0 with 65 individuals (65.7%) having size 1.6 wires inserted. The majority of patients, 66 (62.9%) underwent fixation with two wires (range 1-4). The majority of infected cases (88.9%) were in patients who had k-wires crossing the CMCJ, this trended towards clinical significance (p=0.09). Infection was associated with delay to theatre (p=0.002) and longer operative time (p=0.002). In patients with a base of 4th and 5th metacarpal fractures, we have demonstrated an increased risk of post-operative infection with a K-wire configuration that crosses the CMCJ. Biomechanical studies would be of use in determining the exact amount of movement across the CMCJ, with the different K-wire configuration in common use, and this will be part of a follow-up study

Abstract. Objectives. 1. To describe the epidemiology of metacarpal shaft fractures (MSF) in adults. 2. To evaluate the variation in practice and document complications following usual care. 3. To explore factors associated with treatment modality. 4. To document hospital resource use following MSF. Methods. A multi-centre, retrospective, cross-sectional study of MSF at six centres. The healthcare records, operative notes and imaging of adults presenting within 10 days of a MSF, affecting the second to fifth metacarpal between 1st August 2016 to 31st July 2017, were reviewed. Total number of Emergency Department (ED) attendances were used to calculate prevalence. Data analyses are primarily descriptive with 95% confidence intervals to quantify uncertainty in estimates. Results. Of 837, 212 ED attendances, 793 patients (75% male, 25% female), with 897 MSF were eligible, a prevalence of 0.1%. The median age was 27 years (16–97); the highest incidence was in males aged between 16 and 24 years. The most common fracture pattern was transverse. While 83% were treated non-surgically overall, this varied across centres. Twelve different types of non-surgical and six different types of surgical treatment were used. Multi-fragmentary fracture patterns were most likely to be treated surgically and long oblique least likely. Fracture pattern, complexity, displacement and age were associated with treatment modality. Patients treated surgically required more radiographs, longer radiographic and outpatient follow-up and were more likely to be referred for therapy. 5% (39/793) experienced a complication. 20% (160/783) failed to attend at least one or more clinic appointments. Conclusions. MSF are a common injuries, predominantly affecting young males of working age. There is variation in mode and type of treatment, with the majority treated non-surgically in the selected centres. Despite a low complication rate, they require considerable secondary care resources. Further research into the optimal treatment modality for these injuries is needed. Declaration of Interest. (b) declare that there is no conflict of interest that could be perceived as prejudicing the impartiality of the research reported:I declare that there is no conflict of interest that could be perceived as prejudicing the impartiality of the research project

Objectives. The exact aetiology and pathogenesis of microdamage-induced long bone fractures remain unknown. These fractures are likely to be the result of inadequate bone remodelling in response to damage. This study aims to identify an association of osteocyte apoptosis, the presence of osteocytic osteolysis, and any alterations in sclerostin expression with a fracture of the third metacarpal (Mc-III) bone of Thoroughbred racehorses. Methods. A total of 30 Mc-III bones were obtained; ten bones were fractured during racing, ten were from the contralateral limb, and ten were from control horses. Each Mc-III bone was divided into a fracture site, condyle, condylar groove, and sagittal ridge. Microcracks and diffuse microdamage were quantified. Apoptotic osteocytes were measured using TUNEL staining. Cathepsin K, matrix metalloproteinase-13 (MMP-13), HtrA1, and sclerostin expression were analyzed. Results. In the fracture group, microdamage was elevated 38.9% (. sd 2.6. ) compared with controls. There was no difference in the osteocyte number and the percentage of apoptotic cells between contralateral limb and unraced control; however, there were significantly fewer apoptotic cells in fractured samples (p < 0.02). Immunohistochemistry showed that in deep zones of the fractured samples, sclerostin expression was significantly higher (p < 0.03) than the total number of osteocytes. No increase in cathepsin K, MMP-13, or HtrA1 was present. Conclusion. There is increased microdamage in Mc-III bones that have fractured during racing. In this study, this is not associated with osteocyte apoptosis or osteocytic osteolysis. The finding of increased sclerostin in the region of the fracture suggests that this protein may be playing a key role in the regulation of bone microdamage during stress adaptation. Cite this article: N. Hopper, E. Singer, F. Henson. Increased sclerostin associated with stress fracture of the third metacarpal bone in the Thoroughbred racehorse. Bone Joint Res 2018;7:94–102. DOI: 10.1302/2046-3758.71.BJR-2016-0202.R4

Two case reports illustrate a relatively simple procedure to preserve thumb function in trauma and locally invasive tumours. The first case report is of a man who presented with a slowly growing chondrosarcoma involving his left thumb metacarpal. Radiological investigations and incision biopsy confirmed the diagnosis of a low-grade chondrosarcoma. Thumb function sparing wide local excision of the metacarpal, including the thenar muscles was carried out. The floating thumb was stabilised with a temporary silicone block interposed between trapezium and the proximal phalanx. After four weeks the silicone block was replaced with a tri cortical bone graft from the opposite iliac crest and fixed distally to the proximal phalanx and proximally to the trapezium. The second case report is of a soldier who sustained multiple injuries including open fractures of left thumb metacarpal with associated soft tissue and bone loss. This was from a mortar shell explosion in the jungle. After immediate debridement locally he was transferred to the UK. On arrival he was found to be septic and with ARDS, requiring ITU treatment. One week later he underwent debridement and stabilisation of his thumb injury with an external fixator. This got infected and he went on to develop a non-union. He needed multiple visits to the Operating theatre to sort out his other injuries. Some seven months post trauma he went on to have the metacarpal successfully reconstructed using iliac crest bone graft. These two very different cases underwent a similar reconstructive procedure to try and preserve the thumb and regain some function. After rehabilitation both patients are pleased to have had their thumb preserved

The use of plates and screws for the treatment of certain metacarpal fractures is well established. Securing plates with bicortical screws has been considered an accepted practice. However, no study has questioned this. This study biomechanically assessed the use of bicortical versus unicortical screws in metacarpal plating. Eighteen fresh frozen cadaveric metacarpals were subject to midshaft transverse osteotomies and randomly divided into two groups. Using dorsally applied Leibinger 2.3mm 4 hole plates, one group was secured using 6mm unicortical screws, while the second group had bicortical screws. Metacarpals were tested to failure using a four point bending protocol in an apex dorsal direction on a servo-hydraulic testing machine with a 1kN load cell. Load to failure, rigidity, and mechanism of failure were all assessed. Each group had three samples that did not fail after a 900 N load was applied. Of those that failed, the mean load to failure was 596N and 541 N for the unicortical and bicortical groups respectively. These loads are well in excess of those experienced by the in-vivo metacarpal. The rigidity was 446N/mm and 458N/mm of the uni-cortical and bicortical groups respectively. Fracture at the screw/bone interface was the cause of failure in all that failed, with screw pullout not occurring in any. This study suggests that there may be no biomechanical advantage in using bicortical screws when plating metacarpal fractures. Adopting a unicortical plating method simplifies the operation, and avoids potential complications associated with overdrilling and oversized screws

Introduction: Metacarpal and phalangeal fractures are frequent (13% of the total number of fractures). It seems that the best treatment for the displaced fractures is fixation. Various methods have been used, such as plates and screws, wires, IM-nailing, external fixation. The main problems are adhesions of extensor tendons, scarring and stiffness of the joints. The purpose of this study is to examine the efficacy of internal fixation using Kirschner wires, applied open or closed, treating metacarpal and phalangeal fractures. MATERIALS AND Methods: Between 1998 and 2005 145 out of a total of 2848 (5.2%) metacarpal and phalangeal fractures underwent operative treatment. Fixation was achieved by placing extrarticularly two or more Kirschner wires. The wires were removed after 4 weeks and patients underwent physiotherapy for 2 to 4 weeks. The follow-up period was 3 – 15 mos (average 12 mos) and total range of movement and function of the injured hand was evaluated. Results: Bone union was evident in 3 to 5 weeks. Range of movement was approximately 90% of normal, except for cases of comminuted intraarticular fractures and also in 6 cases of elderly non-cooperative patients. One case of infection, complicating a metacarpal fracture and well responding to antibiotic treatment, was recorded. Three further infections resulted after neglected intraarticular fractures, all of which underwent arthrodesis. No rotational deformities were observed. There was no mechanical failure of the fixation in any case. Conclusion: The fixation of metacarpal and phalangeal fractures using K-wires seems to be a useful method minimally invasive, stable and well tolerated by the patient, not interfering with the mobility of the joints. K-wires are easily removed and of low cost. The functional outcome of this method seems to be quite satisfactory

Introduction. Antegrade K wiring of the fifth metacarpal for treatment of displaced metacarpal neck fractures is a well recognized surgical procedure. However it is not without complication and injury to the dorsal cutaneous branch of the ulnar nerve has been reported in up to 15% of cases. Methods. We performed a cadaver study to determine the proximity of this nerve to the K wire insertion point at the base of the fifth metacarpal. K wires were percutaneously inserted under image intensification in sixteen cadaver hands and advanced into the head of the metacarpal. Wires were then cut and bent outside the skin. This was then followed by meticulous dissection of the ulnar nerve from proximal to distal. A number of measurements were taken to identify the distance from the insertion point of the K wire to each branch of this nerve. Results. The distance from the insertion point at the base of the fifth metacarpal to the dorsal component of the nerve averaged 5.6 mm (range 1mm–12mm) and from the volar component was 6 mm (range 1mm–10mm). The heel of the wire was touching the nerve in five cases. Conclusion. Our findings highlight the importance of making a small incision and bluntly dissecting to bone at the base of the fifth metacarpal to protect the nerve. In addition, use of a tissue protector is vital when drilling the 2mm hole at the base of the fifth metacarpal. We have confirmed that the dorsal cutaneous branch of the ulnar nerve is vulnerable during insertion of an antegrade intramedullary K wire for treatment of neck of fifth metacarpal fractures

Introduction: Intramedullary fixation is a recognised method of fracture fixation in fifth metacarpal fractures. We describe a new technique for fixation of fractures of the middle three metacarpals. Patients and Methods: We reviewed a single surgeon’s series of 16 male patients (mean age 27.9 years, range 18–46) with 20 displaced transverse midshaft fractures of the 2nd, 3rd and 4th metacarpals treated by antegrade intramedullary Kirschner wiring. Work related and domestic accidents constituted the mode of injury in 8 patients and in the remaining 8 as a result of an assault, fall or road traffic accident. Twelve patients were in employment at the time of injury including four heavy manual labourers. A single pre-bent 1.6 millimetre Kirschner wire was inserted into the medullary canal through a drill hole in the metacarpal base and passed across the reduced fracture into the metacarpal head. The proximal end of the wire remained protruding percutaneously. Following stabilisation of the fracture, early mobilisation was commenced. Results: All of the study group had satisfactory clinical and radiological outcomes. All of the fractures united clinically and radiologically. There was one case of delayed union, with union at 35 weeks. In the remaining patients fracture union had occurred radiologically at an average of 5.4 weeks (range 4–12 weeks). Radiologically there was a mean angular deformity of 4.05° (range 0–11°) in the coronal plane and 0.75° (range 0–9°) in the sagittal plane. Postoperatively 2 patients developed a pin tract infection requiring treatment with antibiotics and early removal of the K-wire. All patients on questioning by telephone questionnaire were satisfied with their resulting hand function and appearance. All patients had returned to normal activities of daily living by 8 weeks. Of those patients in employment all had returned to work by 6 weeks (mean 3.3. weeks). Conclusion: Antegrade intramedullary single K wiring is a useful technique for managing unstable midshaft metacarpal fractures producing excellent clinical and radiological results

Two case reports illustrate a relatively simple procedure to preserve thumb function in trauma and locally invasive tumours. The first case report is of a man who presented with a slowly growing chondrosarcoma involving his left thumb metacarpal. Radiological investigations and incision biopsy confirmed the diagnosis of a low-grade chondrosarcoma. Thumb function sparing wide local excision of the metacarpal, including the thenar muscles was carried out. The floating thumb was stabilised with a temporary silicone block interposed between trapezium and the proximal phalanx. After four weeks the silicone block was replaced with a tri cortical bone graft from the opposite iliac crest and fixed distally to the proximal phalanx and proximally to the trapezium. The second case report is of a soldier who sustained multiple injuries including open fracture of left thumb metacarpal with associated soft tissue and bone loss. This was from a mortar shell explosion in a commando operation in the jungle. After immediate debridement locally he was transferred to the UK. On arrival ARDS and sepsis requiring ITU treatment further compromised his clinical status. One week later he underwent debridement and stabilisation of his thumb injury with an external fixature. This got infected and went on to develop a non-union. Some seven months post trauma he went on to have the metacarpal reconstructed using iliac crest bone graft. These two very different cases underwent a similar reconstructive procedure to try and preserve the thumb and regain some function. After rehabilitation both patients are pleased to have their thumb preserved

Locking of the MCP joint of the finger, except with stenosing tenosynovitis, is relatively rare. The middle finger is most frequently involved. We treated 7 patients who had locking of the MCP joint of the middle finger because of osteophyte of the metacarpal head. The locking of the MCP joint usually occurred in the older patient as a result of significant osteophyte around the metacarpal head. Unlocking of the MCP joint was done by closed manipulation under local anaesthesia. Locking of the MCP joint of the finger because of other causes than tenosynovitis has been reported infrequently. Locking of the MCP joint caused by osteophyte of the head of the metacarpal is characterised by painful loss of extension of the MCP joint without loss of flexion. We have treated 7 patients who had locking of the MCP joint occurring in the middle finger with an obvious osteophyte of the metacarpal head. Seven patients, 4 women and 3 men, were treated in our Department. None of the patients had a history of trauma to their hands, and in all of them it was the dominant hand which was affected and usually due to powerful full flexion movement of the fingers. The average age was 73.8 years (65 – 81). The duration of locking was from 3 hours to 14 days. All the patients were treated within 30–60 minutes after reporting to our Clinic. The presentation of the patients was extremely similar. In all cases active and passive extension was blocked and they had pain around the finger. Full flexion was possible. The MCP joint was tender around the palmar aspect with slight diffuse swelling around the dorsal aspect. Radiographs of the MCP showed degenerative changes in all the patients and oblique views demonstrated an osteophyte either on the ulnar or the radial side of the head. Local anaesthetic Lignocaine 1% 5ml was injected in the MCP and around the joint and after 5–10 minutes manipulation was performed, unlocking achieved and the patients straightaway extended and flexed the finger fully. No-one underwent surgical release. Follow-up from 3 to 8 months, average 6 months. No recurrence of the locking. Akio Minami reported 4 cases of MCP joint locking of the middle finger, treated surgically. Williams classified the locking of the MCP joint in 3 groups. Langenskiold reported 2 cases of intrinsic locking of the MCP due to catching of the collateral ligament on the lateral bony projection of the metacarpal head. It is very difficult to explain why the middle finger is most likely affected. Kessler noted that the MCP joint seldom participates in a generalised degenerative OA

AIM: The purpose of this prospective study was to asses the outcome of antegrade intramedullary wiring of displaced distal end of fifth metacarpal fracture in skeletally immature. Intramedullary wiring for fracture metacarpals have been well described in the literature. Retrograde wiring for neck of metacarpal fractures have been associated with limitation of extension at metacarpo-phalangeal joint due to involvement of gliding extensor mechanism. Foucher described ‘Bouguet’ osteosynthesis with multiple wires for metacarpal neck fracture which can be technically demanding in small bones of children. We describe an antegrade wiring using a single bent K-wire at the tip for reducing and stabilising displaced metacarpal neck fracture by rotating 180 degree after crossing fracture site, a method similar to Methaizeau technique for stabilisation of displaced radial neck fractures using nancy nail. METHOD: Between 2000 to 2006 we treated 9 boys with displaced distal end of fifth metacarpal fracture +/− rotational deformity of little finger using above technique. All of them had closed injuries and the indication for surgery was rotatory mal-alignment or fracture angulation more than 40 degrees. The assessment involved a clinical and radiological examination. The mean age was 13 years. The mean follow-up was 15 months. RESULTS: All fractures healed in anatomical alignment. There was no loss of active or passive movement of the little finger metacarpo-phalangeal joint or weakness of grip strength in any children. All children returned to pre-injury activity level within 4–6 weeks. There were no complications. CONCLUSION: Early results of treating displaced little finger metacarpal neck fracture in children using antegrade intramedullary wire are encouraging

Introduction and Aim: The metacarpal fractures constitute 10% of skeletal fractures in general affecting mainly children and young adults. There is a lot of discrepancy and lack of evidence with regards to correctly managing the little finger metacarpal fractures. Our study was aimed at investigating the current practice of management little finger metacarpal fractures among upper limb surgeons in United Kingdom. Methods: We conducted an online survey between June 2006 and June 2007 consisting of 10 multiple-choice questions that was e-mailed to 278 upper limb orthopaedic specialist surgeons. The response rate was 58% (n = 158) from the upper limb surgeons. Four questionnaires had to be excluded due to multiple responses to each question or incomplete forms. Results: 43% upper limb surgeons prefer neighbour strapping alone for non-operative management of little finger metacarpal fractures. Ulnar gutter cast or splint was the next choice among 19% upper limb surgeons while 13% respondents apply neighbour strapping to ring finger along with a splint. There was mixed response regarding period of immobilisation. 40% of surgeons were in favour of 3 weeks of immobilisation, 23% for 2 weeks while 28% do not immobilise these fractures at all. With regard to considering the most important indication(s) for surgical intervention, rotational deformity was the most common indication (84%), followed by open fracture (70%), intra-articular fracture (44%), associated 4th metacarpal fracture (26%), shortening > 5mm (21%) and volar angulation – (15%). If treated non-operatively, the most preferred period of fracture clinic follow up was one visit at 3 weeks by 40% while 36% thought that no follow up is required once decision is made to treat them conservatively. Conclusion: Isolated undisplaced fractures of little metacarpal are usually managed conservatively using a plethora of methods of immobilisation. The indications for operative intervention are open fracture, rotational deformity, intra-articular fractures and shortening. Many clinical studies have demonstrated that in the conservative care of boxer’s fractures (casting, with or without reduction), between 20 degrees and 70 degrees of dorsal angulation is acceptable. We conclude that contemporary literature provides no evidence as to whether conservative or operative methods of the treatment of these fractures is superior, but rather suggests that they are equally effective. We conclude from our survey that there is no consensus even among the upper limb surgeons with regards to management of little finger metacarpal fractures in United Kingdom

We reviewed our results and complications of using a pre-bent 1.6mm Kirschner wire (K-wire) for extra-articular metacarpal fractures. The surgical procedure was indicated for angulation at the fracture site in a true lateral radiograph of at least 30 degrees and/or in the presence of a rotatory deformity. A single K-wire is pre-bent in a lazy-S fashion with a sharp bend at approximately 5 millimetres and a longer smooth curve bent in the opposite direction. An initial entry point is made at the base of the metacarpal using a 2.5mm drill by hand. The K-wire is inserted blunt end first in an antegrade manner and the fracture reduced as the wire is passed across the fracture site. With the wire acting as three-point fixation, early mobilisation is commenced at the metacarpo-phalangeal joint in a Futuro hand splint. The wire is usually removed with pliers post-operatively at four weeks in the fracture clinic. We studied internal fixation of 18 little finger and 2 ring finger metacarpal fractures from November 2007 to August 2009. The average age of the cohort was 25 years with 3 women and 17 men. The predominant mechanism was a punch injury with 5 diaphyseal and 15 metacarpal neck fractures. The time to surgical intervention was a mean 13 days (range 4 to 28 days). All fractures proceeded to bony union. The wire was extracted at an average of 4.4 weeks (range three to six weeks). At an average follow up of 8 weeks, one fracture had to be revised for failed fixation and three superficial wound infections needed antibiotic treatment. With this simple and minimally invasive technique performed as day-case surgery, all patients were able to start mobilisation immediately. The general outcome was good hand function with few complications

The previous bioabsorbable plates have had several issues with regard to clinical usage for fractures. The aims of this study were to demonstrate the clinical results of novel bioabsorbable plates made of hydroxyapatite/poly-L-lactide and titanium plates for metacarpal fractures and to compare mechanical properties of them in a fracture model. The subjects were 33 metacarpal diaphyseal fractures of 27 consecutive patients treated with bioabsorbable plates. The mean age was 35.8 (17–78), 22 male and 5 female was included. The mean follow up period was 7.4months (2–14). All cases achieved bone union, and there were no complication especially for aseptic swelling etc. Furthermore, we compared the mechanical properties of bioabsorbable and titanium plates. There were no significant differences in 6 month postoperative clinical results including total range of active motion and % of the contralateral grip strength between patients receiving bioabsorbable and titanium plates. The bending strength and stiffness of one-third tubular bioabsorbable plate constructs were comparable with those of titanium plates for 1.5mm screws, and those of semi-tubular bioabsorbable plates were comparable with those of titanium plates for 2.0mm screws. The torsional strength of semi-tubular bioabsorbable plates was significantly greater than that of titanium plates for 2.0mm screws

Introduction: Although a variety of fixation techniques have been reported for fixation of oblique or spiral metacarpal fractures, lag screw fixation has been reported to be the most biomechanically stable method. Lag screws are inserted following over-drilling of the proximal cortex, which provides compression at the fracture site. We believe the compression provided by the Leibinger Bow system makes over-drilling unnecessary. Methods: Twenty fresh-frozen human cadaveric metacarpal bones (index, ring and middle) were utilised. Bones were cleared of soft tissue and the proximal ends were embedded in Wood’s metal using a Teflon mould. Long oblique osteotomies were performed with a fine oscillating saw. Bones were randomly allocated to lagged and non-lagged groups. All bones were held in the Leibinger Bow and fixed with two screws at right-angles across the fracture site. The proximal cortex of the lagged specimens was over-drilled and the non-lagged specimens were not. The bones were subjected to cantilevered bending to failure in a mechanical testing machine. The axial stress was calculated from results for load to failure and the moment of inertia for each specimen. Results: All specimens failed through the proximal screw. Analysis of variance statistical analysis revealed no significant difference in axial stress between the two groups. Conclusions: Minute errors during over-drilling of the proximal cortex can easily lead to inadequate fixation. These data suggest that the use of the Leibinger Bow System may eliminate the need for this over-drilling. This not only shortens the procedure, but also reduces the chance of errors leading to poor fixation

Background. Boxer's fractures are the most common type of metacarpal fracture. It commonly occurs during fistfights or from punching a wall. Greer et al demonstrated that it is usually an intentional injury and these patients were at increased risk for recurrent injury (2). Further work suggested that patients with such injuries had higher features of antisocial, self- harm and impulsive behavior, compared with control groups (3). There is little that has been reported on children and adolescents who present with such fractures. This study aims to assess aggression scores in young patients with metacarpal fractures due to punching using a validated questionnaire. Methodology. Following ethical permission, 11–18 year olds, with a boxers fracture and willing to complete an anonymous questionnaire were included. If they were under 16, parental permission was sought. The Buss and Warren validated questionnaire included subscales of physical aggression and anger scales as well as overall aggression scoring. Results. 48 patients who had metacarpal fractures due to punching have completed the study to date. There were 46 males and 2 females. The physical aggression scores ranged from 11–40 with a mean of 25, median 35.5 and mode 14. 24 patients demonstrated high aggression scores. Anger scores ranged from 7–33. Mean 19, mode 13, median 18.5. 18 patients demonstrated high anger scores. Overall aggression scores ranged from 43–148 with a mean of 96 and median of 92.5. Nineteen patients demonstrated high scores. Discussion. This study shows that 40% of the patients had higher overall aggression levels than the normal population. The physical aggression subscale focused on the use of physical force and 50% had high physical aggression levels. High scores in this subscale indicate a lack of ability to control urges toward physical aggression and this is often seen in children with attention deficit disorder. Anger scores may indicate a number of conduct disorders/abusive situations and in this study 38% had raised anger scores. This may be relevant in assessing children with punch injuries as they may benefit from assessment by the CAMS team for investigation and management of their anger and aggression issues, which in turn may reduce recurrence of the injuries