Preliminary comparative study of lower extremity pressure measurements under the conditions using former models and new lithotomy stirrups in rectal cancer surgery.

BACKGROUND: This study aimed to investigate the effect of the use of new lithotomy stirrups-2 on the pressure dispersal on lower limbs, which may lead to the prevention of well-leg compartment syndrome (WLCS) and deep venous thrombosis (DVT), which are the most commonly associated adverse events with laparoscopic and robot-assisted rectal surgery. METHODS: A total of 30 healthy participants were included in this study. The pressure (mmHg) applied on various lower limb muscles when using conventional lithotomy stirrups-1 and new type stirrups-2 was recorded in various lithotomy positions; 1) neutral position, 2) Trendelenburg position (15°) with a 0° right inferior tilt, and 3) Trendelenburg position (15°) with a 10° right inferior tilt. Using a special sensor pad named Palm Q®, and the average values were compared between two types of stirrups. RESULTS: The use of new lithotomy stirrups-2 significantly reduced the pressure applied on the lower limb muscles in various lithotomy positions compared with the use of lithotomy stirrups-1. The most pressured lower limb muscle when using both lithotomy stirrups was the central soleus muscle, which is the most common site for the development of WLCS and DVT. In addition, when using the conventional lithotomy stirrups-1, the pressure was predominantly applied to the proximal soleus muscle; however, when using lithotomy stirrups-2, the pressure was shifted to the more distal soleus muscle. CONCLUSION: These results suggest that the new lithotomy stirrups-2 is useful in reducing the pressure load on leg muscles, especially on the proximal to central soleus, and may reduce the incidence of WLCS and DVT after rectal surgery performed in the lithotomy position. Further clinical studies are needed to determine whether the use of lithotomy stirrups-2 prevents these complications in various clinical settings.

Prophylactic fasciotomy of the anterolateral thigh donor site in head and neck reconstruction.

INTRODUCTION: The free anterolateral thigh (ALT) flap is a versatile reconstructive option for head and neck defects. Donor site complications are rare but severe; with wound dehiscence, need for secondary closure, and compartment syndrome reported. OBJECTIVES: We propose prophylactic thigh fasciotomy as a surgical technique to facilitate primary closure while preventing donor site complications during ALT flap harvest. METHODS: We examined donor site wound characteristics, recipient site wound characteristics, and clinical outcomes for 24 consecutive ALT flaps performed for head and neck reconstruction from 2016 to 2018. All ALT donor sites underwent prophylactic fasciotomy. RESULTS: There were no incidents of thigh compartment syndrome or wound dehiscence of donor site; one patient underwent primary donor site skin grafting. CONCLUSION: Prophylactic thigh fasciotomy allows mobilization of soft tissue to facilitate primary tension-free closure of the ALT donor site even for free flaps with a large skin component, while reducing the possibility of compartment syndrome.

Early Fasciotomy and Limb Salvage and Complications in Military Lower Extremity Vascular Injury.

BACKGROUND: Military guidelines endorse early fasciotomy after revascularization of lower extremity injuries to prevent compartment syndrome, but the real-world impact is unknown. We assessed the association between fasciotomy and amputation and limb complications among lower extremitys with vascular injury. METHODS: A retrospectively collected lower extremity injury database was queried for limbs undergoing attempted salvage with vascular procedure (2004-2012). Limbs were categorized as having undergone fasciotomy or not. Injury and treatment characteristics were collected, as were intervention timing data when available. The primary outcome measure was amputation. Multivariate models examined the impact of fasciotomy on limb outcomes. RESULTS: Inclusion criteria were met by 515 limbs, 335 (65%) with fasciotomy (median 7.7 h postinjury). Of 212 limbs, 174 (84%) with timing data had fasciotomy within 30 min of initial surgery. Compartment syndrome and suspicion of elevated pressure was documented in 127 limbs (25%; 122 had fasciotomy). Tourniquet and shunt use, fracture, multiple arterial and combined arteriovenous injuries, popliteal involvement, and graft reconstruction were more common in fasciotomy limbs. Isolated venous injury and vascular ligation were more common in nonfasciotomy limbs. Fasciotomy timing was not associated with amputation. Controlling for limb injury severity, fasciotomy was not associated with amputation but was associated with limb infection, motor dysfunction, and contracture. Sixty-three percent of fasciotomies were open for >7 d, and 43% had multiple closure procedures. Fasciotomy revision (17%) was not associated with increased amputation or complications. CONCLUSIONS: Fasciotomy after military lower extremity vascular injury is predominantly performed early, frequently without documented compartment pressure elevation. Early fasciotomy is generally performed in severely injured limbs with a subsequent high rate of limb complications.

Resection of Anterior and Lateral Muscle Compartments Does Not Preclude Limb Salvage and Functions.

BACKGROUND: Fasciotomy with resection of nonviable muscle is often necessary when there is a delay in compartment syndrome (CS) diagnosis after revascularization. The reported rate of major amputation following missed CS or delayed fasciotomy ranges from 12% to 35%. Herein, the authors present a series of critically ill patients who experienced delayed CS diagnosis and required complete resection of the anterior and/or lateral compartments but still achieved limb salvage and function. METHODS: A retrospective chart review identified five patients from April 2018 to April 2019 within a single institution who met the inclusion criteria. Patient charts were reviewed for demographic data, risk factors, time to diagnosis following revascularization, muscle compartments resected, operative and wound care details, and functional outcome at follow-up. RESULTS: All of the patients developed CS of the lower extremity following revascularization secondary to acute limb ischemia and required two-incision, four-compartment fasciotomies. Further, they all required serial operative debridements to achieve limb salvage; however, there were no major amputations, and all of the patients were walking at follow-up. CONCLUSIONS: Delay in CS diagnosis can have devastating consequences, resulting in major amputation. In cases where myonecrosis is isolated to two or fewer compartments, complete compartment muscle resection can be safely performed, and limb preservation and function can be maintained with aggressive wound management and physical therapy.

Compartment Syndrome in Operatively Managed Pediatric Monteggia Fractures and Equivalents.

BACKGROUND: Acute compartment syndrome (ACS) is not commonly associated with pediatric Monteggia fractures or Monteggia equivalents (MF/ME). The aims of this study were: (1) To document a rate of ACS among children with operatively managed MF/ME, comparing this to the rate of ACS in classically associated Type 3 supracondylar humerus (T3-SCH) fractures at the same institution; (2) To determine which patients with MF/ME are at highest risk for ACS. METHODS: Children ages 2 to 12 with MF/ME requiring operative management at an academic institution over a 14-year period were identified. The Monteggia fractures were characterized using the Bado classification; equivalent injuries were identified according to established criteria. Similarly, all patients with T3-SCH fractures managed over the same period were identified. Record review included demographic, procedural, and radiographic variables. Statistical analysis compared the rates of ACS in both groups and determined risk factors associated with developing ACS in patients with MF/ME. RESULTS: The rate of ACS in MF/ME was 9 of the 59 (15.3%), which was significantly higher than the rate of ACS in T3-SCH fractures 2 of the 230 (0.9%) (P=0.001). Comparing MF/ME with ACS to those without; there was no difference in sex (P=1.00), Bado Type (P=0.683), or Monteggia fracture versus equivalent (P=0.704). MF/ME with preoperative vascular deficits (22.2%) and those undergoing intramedullary fixation of the radius were more likely to develop ACS (P=0.021 and 0.015, respectively), and there was a trend toward higher rates of ACS among MF/ME with preoperative neurological deficits (P=0.064). CONCLUSIONS: Patients with operatively managed MF/ME had a significantly higher rate of ACS compared with patients with T3-SCH fractures. With no predisposition based on Bado classification or Monteggia fracture versus equivalent, all operatively managed MF/ME appear to be at risk for ACS. Patients with preoperative neurovascular deficits and those undergoing intramedullary radial fixation develop ACS at higher rates. Careful assessment of the forearm for signs and symptoms of ACS both before and after fixation is critical. LEVEL OF EVIDENCE: Level III-retrospective case control.

Does a staged treatment of high energy tibial plateau fractures affect functional results and bony union? A case series.

PURPOSE: Tibial plateau fracture (TPF) is a devastating injury as it shatters lower articular surface of the largest joint. Apart from bony injury, TPF can lead to great soft tissue envelope compromise which affects the treatment plan and outcome. In the present study, clinical results were assessed in cases of high energy TPFs treated in staged manner. METHODS: Twenty-three (20 males and 3 females) patients of high energy communited TPFs (Schatzker type V and VI) were consecutively treated.1 All the patient had compromise of overlying skin conditions. They were all successively scheduled for staged treatment plan which comprised of application of bridging knee external fixator on the first day of admission and definitive internal fixation after skin and soft tissue overlying the fracture were healed. Schatzker type I, II, III and IV were excluded from the study. Primary survey was done and patient who had head injury, chest and abdominal injury, pelvic injury and contralateral limb injury and open fractures were excluded from the study. The patients were also evaluated in terms of wound complications, axial and rotary alignment of limb, fixation failure, articular congruity and range of motion of the knees and post injury employment. Statistical analysis was done using SPSS software. RESULTS: Maximum follow-up period was 13 months. All the fractures were united at final follow-up. Clinical evaluation was done with the Tegner Lysholm knee scoring scale.2 Excellent results were found in 78% cases and good and fair results in 22% cases. There was significant correlation between range of motion and the Tegner Lysholm knee score (p < 0.001, Pearson correlation coefficient = 0.741). The correlation between the score and the radiographical union duration was significant (p = 0.006, Pearson correlation coefficient = -0.554). CONCLUSION: A staged treatment plan allows healing of soft tissue envelope, with avoidance of dreadful complications such as compartment syndrome and chronic infection. In addition, a staged treatment strategy does not hamper the fracture reduction, bony union and the functional results.

Avoiding, diagnosing and treating well leg compartment syndrome after pelvic surgery.

BACKGROUND: Patients undergoing prolonged pelvic surgery may develop compartment syndrome of one or both lower limbs in the absence of direct trauma or pre-existing vascular disease (well leg compartment syndrome). This condition may have devastating consequences for postoperative recovery, including loss of life or limb, and irreversible disability. METHODS: These guidelines represent the collaboration of a multidisciplinary group of colorectal, vascular and orthopaedic surgeons, acting on behalf of their specialty associations in the UK and Ireland. A systematic analysis of the available peer-reviewed literature was undertaken to provide an evidence base from which these guidelines were developed. RESULTS: These guidelines encompass the risk factors (both patient- and procedure-related), diagnosis and management of the condition. Key recommendations for the adoption of perioperative strategies to facilitate prevention and effective treatment of well leg compartment syndrome are presented. CONCLUSION: All surgeons who carry out abdominopelvic surgical procedures should be aware of well leg compartment syndrome, and instigate policies within their own institution to reduce the risk of this potentially life-changing complication.

Multiple Stab Incisions and Evacuation Technique for Contrast Extravasation of the Hand and Forearm.

Extravasation of intravenous contrast agents in the hand and forearm during computed tomography scanning is rising with the use of automated pressure injectors. The main concern in such a situation is progression to acute compartment syndrome and necrosis of the overlying skin. Management has been mainly nonsurgical comprising upper limb elevation and orthosis, with surgical techniques such as liposuction and saline evacuation mainly used for large volume (>50 mL) extravasations. We have developed a technique of multiple stab incisions and drainage for the treatment of contrast extravasations.

Under Pressure: The Utility of Spacers in Univalved Fiberglass Casts.

BACKGROUND: Univalving fiberglass casts after fracture manipulation or extremity surgery reduces the risk of developing compartment syndrome (CS). Previous experiments have demonstrated that univalving decreases intracompartmental pressures (ICPs), but increases the risk for loss of fracture reduction due to altering the mechanical properties of the cast. The purpose of this study was to correlate cast valve width within a univalved cast model to decreasing ICP. METHODS: Saline bags (1 L) were covered with stockinette, Webril, and fiberglass tape then connected to an arterial pressure line monitor. Resting pressure was recorded. A water column was added to simulate 2 groups (n=5 each) of clinical CS: low pressure CS (LPCS range, 28 to 31 mm Hg) and high pressure CS (HPCS, range, 64 to 68 mm Hg). After the designated pressure was reached, the fiberglass was cut (stockinette and Webril remained intact). Cast spacers were inserted into each univalve and secured with varying widths: position #1 (3 mm wide), #2 (6 mm), #3 (9 mm), and #4 (12 mm). Pressure was recorded after cutting the fiberglass and following each spacer placement. RESULTS: In LPCS and HPCS groups, after univalve and placement of spacer position #1, pressure dropped by a mean of 52% and 58%, respectively. Spacer #2, decreased the pressure by a mean of 78% and 80%, respectively. Both spacer sizes significantly decreased the underlying pressure in both groups. Spacer #3 and #4 progressively reduced pressure within the cast, but not statistically significantly more than the previous spacer widths. CONCLUSIONS: This experimental model replicates the iatrogenic elevation in interstitial compartment pressure due to rigid cast application, not necessarily a self-sustained true CS. Increasing the univalved cast spread by ≥9 mm of the initial cast diameter will reduce pressure to a pre-CS level; however, a spread of only 6 mm can effectively reduce the pressure to <30 mm Hg depending on the initial elevated ICP. Cutting the Webril and stockinette in our model yielded a pressure decrease of 91% and 94% from the starting experimental pressure in the LPCS and the HPCS groups, respectively. CLINICAL RELEVANCE: Although the utility of splitting fiberglass casts has been previously demonstrated, we present evidence highlighting the benefit of spacing the split by at least 6 to 9 mm.

Renal Decapsulation Prevents Intrinsic Renal Compartment Syndrome in Ischemia-Reperfusion-Induced Acute Kidney Injury: A Physiologic Approach.

OBJECTIVES: Acute kidney injury is a serious complication with unacceptably high mortality that lacks of specific curative treatment. Therapies focusing on the hydraulic behavior have shown promising results in preventing structural and functional renal impairment, but the underlying mechanisms remain understudied. Our goal is to assess the effects of renal decapsulation on regional hemodynamics, oxygenation, and perfusion in an ischemic acute kidney injury experimental model. METHODS: In piglets, intra renal pressure, renal tissue oxygen pressure, and dysoxia markers were measured in an ischemia-reperfusion group with intact kidney, an ischemia-reperfusion group where the kidney capsule was removed, and in a sham group. RESULTS: Decapsulated kidneys displayed an effective reduction of intra renal pressure, an increment of renal tissue oxygen pressure, and a better performance in the regional delivery, consumption, and extraction of oxygen after reperfusion, resulting in a marked attenuation of acute kidney injury progression due to reduced structural damage and improved renal function. CONCLUSIONS: Our results strongly suggest that renal decapsulation prevents the onset of an intrinsic renal compartment syndrome after ischemic acute kidney injury.

Effect of abdominal negative-pressure wound therapy on the measurement of intra-abdominal pressure.

BACKGROUND: In critically ill surgical patients undergoing abdominal negative-pressure wound therapy (NPWT), it remains uncertain whether or not intra-abdominal pressure (IAP) measurements should be obtained when NPWT is activated. We aimed to determine agreement between IAP measured with and without NPWT. METHODS: In this analytic cross-sectional study, critically ill surgical adults (≥18 y) requiring abdominal NPWT for temporary abdominal closure after a damage control laparotomy were selected. Patients with urinary tract injuries or with pelvic packing were excluded. Paired IAP measures were performed in the same patient, with and without NPWT; two different operators performed the measures unaware of the other's result. Bland-Altman methods assessed the agreement between the two measures. Subgroup analyses (trauma and nontrauma) were performed. RESULTS: There were 198 IAP measures (99 pairs) in 38 patients. Mean IAP with and without NPWT were 8.33 (standard deviation 4.01) and 8.65 (standard deviation 4.04), respectively. Mean IAP difference was -0.323 (95% confidence interval -0.748 to 0.101), and reference range for difference was -4.579 to 3.932 (P = 0.864). From 112 IAP measures (56 pairs) in 21 trauma patients, mean IAP difference was -0.268 (95% confidence interval -0.867 to 0.331), and reference range for the difference was -4.740 to 4.204 (P = 0.427). CONCLUSIONS: There was no statistically significant disagreement in IAP measures. IAP could be measured with or without NPWT. In critically ill surgical patients with abdominal NPWT for temporary abdominal closure, monitoring and management of IAP either with or without NPWT is recommended.

A systematic review of mechanical thromboprophylaxis in the lithotomy position.

BACKGROUND: Venous thrombosis and compartment syndrome are potentially serious complications of prolonged, lithotomy position surgery. It is unclear whether mechanical thromboprophylaxis in this group of patients modifies the risk of compartment syndrome. This qualitative systematic review examines the evidence base to guide clinical practice. METHOD: A systematic review was performed guided by Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) criteria, to identify studies reporting relationships between lithotomy position, compartment syndrome and mechanical thromboprophylaxis. The aim was to determine if mechanical thromboprophylaxis influenced compartment syndrome risk in the lithotomy position. RESULTS: Sixteen studies were identified: eight case reports or case series (12 patients), two completed audit cycles (approximately 2000 patients), four reviews and two volunteer case control studies (33 subjects). There were no randomised studies. Nine studies associated mechanical thromboprophylaxis with compartment syndrome risk but in each case a causative relationship was speculative. In contrast, five papers, including an experimental, cohort study and two observational, population studies recommended intermittent pneumatic compression as prevention against compartment syndrome in lithotomy position. One review and one case report were unable to make a recommendation. CONCLUSIONS: The level of evidence addressing the interaction between the lithotomy position, compartment syndrome and mechanical thromboprophylaxis is weak. There is no conclusive evidence that mechanical thromboprophylaxis causes compartment syndrome in the lithotomy position. There is limited evidence to suggest intermittent pneumatic compression may be a safe method of mechanical thromboprophylaxis if accompanied by strict adherence to other measures to reduce the chance of compartment syndrome. However further studies are required.

Forearm Fixation is Not Necessary in the Treatment of Pediatric Floating Elbow.

BACKGROUND: Ipsilateral supracondylar humerus and forearm fractures in the pediatric population are an uncommon injury associated with high-energy trauma. Current literature suggests a high rate of compartmental syndrome with this fracture pattern and recommends surgical stabilization of both injuries. We investigate whether surgical treatment of the supracondylar fracture with closed reduction of the forearm fracture and placement into a noncircumferential cast may be an appropriate treatment. METHODS: Retrospective clinical and radiographic review of 47 patients (22 male, 25 female; mean age 6 y) with modified Gartland type 2 or type 3 supracondylar humerus fracture requiring surgical stabilization and an ipsilateral forearm fracture from a single institution over 78 months. RESULTS: Forty-seven pediatric "floating elbow" cases that had operative management of the supracondylar fracture were identified. A total of 21/47 (45%) had displaced forearm fractures that required closed manipulation. Of these, 17/21 (81%) underwent closed reduction of the displaced forearm fracture(s) and were placed into a noncircumferential cast or splint. No patients lost reduction or required remanipulation of either fracture. No patients developed signs of elevated compartment pressures. All patients went on to radiographic union without secondary procedures. CONCLUSIONS: We demonstrate that a supracondylar humerus fracture with an ipsilateral forearm fracture can be safely managed with operative stabilization of the supracondylar humerus fracture alone. Simultaneous closed reduction of the ipsilateral displaced forearm fracture and use of noncircumferential immobilization postoperatively is safe and was not associated with the development of elevated compartment pressures or need for remanipulation. Previous studies that relate a high rate of compartment syndrome with this injury pattern may be misguided, as method of postoperative immobilization may be a more significant factor in the development of elevated compartment pressures than the injury pattern. LEVEL OF EVIDENCE: Level IV.

[Tibial pilon fractures : Advoidance and therapy of complications]. / Pilon-tibiale-Frakturen : Vermeidung und Behandlung von Komplikationen.

Because of the complex fracture morphology and vulnerable soft tissue coverage, fractures of the tibial pilon are difficult to treat. Complications are more common than in bi- or trimalleolar fractures. The surgeon has to know about the special risks of these injuries to avoid complications. Early complications are soft tissue necrosis, persisting fragment dislocations after surgery, loss of reposition and deep wound infection. The surgeon has to be aware of early signs of compartment-syndrome and chronic regional pain syndrome (CRPS). In late complications such as bony necrosis with or without deviation, non-union and osteoarthrosis of the ankle joint give the surgeon more time for planning the therapy. Intensive monitoring until bone healing is necessary in tibial pilon fractures to detect complications early and start the therapy immediately. This kind of therapy results in the best outcome for these patients.

Bedside dressing changes for open abdomen in the intensive care unit is safe and time and staff efficient.

BACKGROUND: Patients with an open abdomen (OA) treated with temporary abdominal closure (TAC) need multiple surgical procedures throughout the hospital stay with repeated changes of the vacuum-assisted closure device (VAC changes). The aim of this study was to examine if using the intensive care unit (ICU) for dressing changes in OA patients was safe regarding bloodstream infections (BSI) and survival. Secondary aims were to evaluate saved time, personnel, and costs. METHODS: All patients treated with OA in the ICU from October 2006 to June 2014 were included. Data were retrospectively obtained from registered procedure codes, clinical and administrative patients' records and the OR, ICU, anesthesia and microbiology databases. Outcomes were 30-, 60- and 90-day survival, BSI, time used and saved personnel costs. RESULTS: A total of 113 patients underwent 960 surgical procedures including 443 VAC changes as a single procedure, of which 165 (37 %) were performed in the ICU. Nine patients died before the first scheduled dressing change and six patients were closed at the first scheduled surgery after established OA, leaving 98 patients for further analysis. The mean duration for the surgical team performing a VAC change in the ICU was 63.4 (60.4-66.4) minutes and in the OR 98.2 (94.6-101.8) minutes (p < 0.001). The mean duration for the anesthesia team in the OR was 115.5 minutes, while this team was not used in the ICU. Personnel costs were reduced by €682 per procedure when using the ICU. Forty-two patients had all the VAC changes done in the OR (VAC-OR), 22 in the ICU (VAC-ICU) and 34 in both OR and ICU (VAC-OR/ICU). BSI was diagnosed in eight (19 %) of the VAC-OR patients, seven (32 %) of the VAC-ICU and eight (24 %) of the VAC-OR/ICU (p = 0.509). Thirty-five patients (83 %) survived 30 days in the VAC-OR group, 17 in the VAC-ICU group (77 %) and 28 (82 %) in the VAC-OR/ICU group (p = 0.844). CONCLUSIONS: VAC change for OA in the ICU saved time for the OR team and the anesthesia team compared to using the OR, and it reduced personnel costs. Importantly, the use of ICU for OA dressing change seemed to be as safe as using the OR.

Harlequin Ichthyosis: A Surgical Perspective.

Limb constriction or encasement in patients with harlequin ichthyosis can cause tissue injury resulting in necrosis and auto-amputation. Surgical release of constrictive plaques has been previously demonstrated, but the perioperative and intraoperative considerations surrounding this infrequent intervention have not been discussed in detail. This report documents a case of harlequin ichthyosis requiring surgical treatment, focusing on the importance of early surgical consultation, risks of surgery, indications for and timing of surgical intervention, and the details of the operation.

Staying Out of Trouble Performing Intramedullary Nailing of Forearm Fractures.

Pediatric diaphyseal forearm fractures occur commonly and often require reduction with stabilization. Intramedullary flexible nails provide an effective method for stabilizing and maintaining reduction of these fractures. There are a few specific technical pearls that can be implemented to improve efficiency of nail placement and minimize postoperative complications, such as painful hardware and compartment syndrome.

Flexible Intramedullary Nailing of Unstable and/or Open Tibia Shaft Fractures in the Pediatric Population.

Tibial shaft fractures are common injuries in the pediatric population, and can be treated conservatively the vast majority of the time. Yet, it is important to recognize that open and/or unstable tibial shaft fractures represent a different entity. Rigid intramedullary devices are generally contraindicated because of the skeletal immaturity of these patients, and external fixation is associated with a high complication rate. As a result, flexible nailing is being utilized with increasing frequency. It is essential for the clinician to understand the pearls and pitfalls associated with the utilization of these flexible nails; particularly in regards to their immediate use in the context of open fractures and the risk of compartment syndrome postoperatively after fixation.

Foam padding in casts accommodates soft tissue swelling and provides circumferential strength after fixation of supracondylar humerus fractures.

BACKGROUND: Varying casting techniques are used after surgical treatment of pediatric supracondylar humerus fractures. The goals are to maintain fracture reduction, while accommodating soft tissue swelling and minimizing the risk of compartment syndrome. METHODS: A retrospective chart review of consecutive patients aged 0 to 14 years who underwent surgical treatment of supracondylar humerus fractures over a 9½-year period at a pediatric trauma center was performed. A new method of casting, in which one half inch sterile foam is applied directly to the skin and overwrapped by circumferential fiberglass, is presented and compared with traditional casts. RESULTS: A total of 541 consecutive patients were included. Foam had been used in 35% (190/541) of patients. Foam was used significantly more frequently in Gartland type 3 fractures (133/314 patients, 42%) than in type 2 fractures (57/227 patients, 25%) (P<0.001). Foam was also used more often in patients with preoperative neurovascular deficits (34/57, 60%) than in those without (156/484, 32%) (P<0.001). No patient in either group developed compartment syndrome postoperatively. Both patients in the study who required revision closed reduction and pinning were casted without foam, and one of these casts had been split. Reoperation was not associated with cast splitting (P=0.216) or foam use (P=0.543). CONCLUSIONS: For postoperative immobilization of supracondylar humerus fractures we present a new method of placing foam directly on the skin, followed by circumferential fiberglass casting. This method offers the theoretical advantage of the strength of a circumferential cast, plus the benefit of allowing for swelling. Although the novel foam and cast combination was used in more severe fractures, results were comparable to traditional casts and may reduce the need for cast splitting. LEVEL OF EVIDENCE: Therapeutic-Level III.

[Compartment syndrome caused by rhabdomyolysis in the context of pychogenic polydipsia]. / Kompartmentsyndrom nach Rhabdomyolyse im Rahmen einer psychogenen Polydipsie.

Psychogenic polydipsia leading to severe hyponatremia is well documented in the literature. This electrolyte disorder can result in encephalopathy, cerebral edema and epileptic seizures. Another rare effect is rhabdomyolysis with all its well known complications (e.g. renal failure, hyperkalemia and cardiac arrhythmia) and even resulting in compartment syndrome due to severe muscle edema. We present the case of a patient with severe hyponatremia caused by psychogenic polydipsia leading to rhabdomyolysis and compartment syndrome.