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Background Kirschner wire tension band (KWTB) and anatomical plate fixation are the most often used procedures for treating Mayo type II olecranon Fractures, each has its technological advantages. However, there are often some associated complications with single use, the combination of Kirschner-wire tension band reduction and locking plate fixation in treating Mayo type II olecranon fractures has been seldom recorded. This research aims to compare the efficacy of KWTB alone and KWTB combined with anatomical locking plate (ALP) in the treatment of Mayo type II olecranon fractures. Methods Clinical data from 72 individuals who had surgery for Mayo type II olecranon fractures between January 2020 and December 2022 were evaluated retrospectively. Patients were randomized to either KWTB ( n  = 37, 19 males and 18 females; range 36 to 75 years; mean age 49.12 ± 9.51 years) or KWTB + ALP ( n  = 35, 16 males and 19 females; range 37 to 75 years; mean age 50.07 ± 9.45 years). Data including operative duration, intraoperative bleeding, incision length, hospital stay, postoperative complications, and the time to return to work, fracture union time, and follow-up time were documented. Their Disabilities of the Arm, Shoulder and Hand (DASH), Mayo elbow performance score and elbow range of motion (ROM) measures were utilized for functional assessments. Results The mean follow-up time was 28.03 ± 8.14 months, there were no statistical differences in general characteristics, intraoperative blood loss and length of incision between the two groups ( P  > 0. 05).The operative duration of KWTB + ALP group was greater than that of KWTB group ( P  < 0. 05). The average stay in the hospital was 8. 80 ± 2. 62 in the KWTB group and 6. 94 ± 3. 82 in the KWTB + ALP group ( P  = 0.0181). Patients come back to work in 9.6 ± 3.4 weeks in the KWTB group and 7.8 ± 2.7 weeks in the KWTB + ALP group ( P  = 0.0156). The rate of complications was considerably greater in the KWTB group (24.3% compared with 5.8%; P  = 0.0283). The fracture union time was 15.36 ± 3.44 in the KWBT group and 12.28 ± 3.42 in the KWTB + ALP group ( P  = 0.003). The mean flexion-extension ROM values and pronation-supination ROM values showed no statistical difference between the two groups. The mean DASH score was 14.0 ± 2.8 in the KWTB group and 10.7 ± 3.2 in the KWTB + ALP group ( P  = 0.001). The average Mayo score was 84.0 ± 9.3 in the KWTB group and 88.3 ± 9.1 in the KWTB + ALP group ( P  = 0.0171). Mean Mayo score and mean DASH score were statistically different between the 02 groups. Conclusion Both operative procedures effectively treat Mayo type II olecranon fractures. Despite the fact that KWTB therapy is inexpensive and simple to administer, there is a high risk of complications associated with it. KWTB combined with ALP in the management of Mayo type II olecranon fracture, especially type IIB olecranon fracture has satisfactory medium and long-term outcome.

Background Tension band wire fixation (TBW) is a well-described method for treating displaced olecranon fractures. Further surgery is often needed due to wound breakdown or prominent hardware. An all-suture technique has recently been described as an alternative to TBW but radiographic and clinical outcome are not well established. The aim of this single-center retrospective cohort study was to evaluate outcome after treatment with all-suture technique for simple displaced olecranon fractures. Methods A retrospective review of olecranon fractures in patients (> 18 years) treated for displaced olecranon fractures with tension band suture fixation (TBSF) between February and August 2019 was performed in our facility. Primary outcome was revision surgery, which was assessed four years after surgery. Clinical and radiographical follow-up was performed at two weeks, six weeks, three months and six months to assess union rate, fracture displacement, range of motion (ROM), Quick-DASH and Oxford Elbow Score. Results A total of 24 patients were included. Median age was 64 years [IQR:39–73], 9 patients were male and median ASA score was 2 [IQR:1–2]. 15 fractures were Mayo type 2 A and 9 type 2B with minor comminution. At four-year follow-up, three patients had died. None of the remaining 21 patients had undergone revision surgery. At six months, the median Quick-DASH and Oxford Elbow Score were 2.3 [IQR:0-4.5] and 47 [IQR:46–48], respectively. Median elbow extension and flexion deficits were 0° [IQR:0-2.25] and 0° [IQR:0–0], respectively. Radiographic union was achieved in all patients. In two cases radiographic loss of reduction and malunion was observed but both patients were asymptomatic and had no functional deficits. One patient refractured the elbow due to a second trauma and was reoperated. Conclusions TBSF is a promising technique for Mayo type 2 A and 2B fractures with minor comminution. There were no revision surgeries within the first four years. We found good functional outcomes and a high union rate.

The aim of this experiment is to compare the biomechanical strength of six distinct internal fixation techniques for Mayo type IIA olecranon fractures using biomechanical analysis. This study utilized tensile tests on artificial, shape-mimicking olecranon bones to assess their biomechanical properties. A tensile test was performed on the artificial, shape-mimicking olecranon bone at a 90° angle, with the tensile load applied at a rate of 2 mm/min until the test displacement reached 2 mm, at which point the test was halted. Throughout the test, the testing system was able to collect load and displacement data in real-time and simultaneously monitor the changes in the load-displacement relationship. The maximum loads for groups A-F were (75.34 ± 2.54), (85.53 ± 2.45), (106.57 ± 3.57), (115.21 ± 11.96), (92.76 ± 3.22), and (147.19 ± 4.29) N, respectively, and the stiffnesses were (33.46 ± 2.96), (39.29 ± 1.12), (51.07 ± 3.22), (53.76 ± 5.26), (40.99 ± 1.34), and (71.66 ± 1.77) N/mm, respectively. When the implantation depth of the Kirschner wires reached four times the standard deviation depth, its maximum load and stiffness performance were superior to those of the double cortical Kirschner wire tension band fixation.

IntroductionOpen reduction and internal fixation has long been accepted as optimal treatment for displaced olecranon fractures based on poor results seen with conservative management. With the presence of comminution, tension-band wiring constructs are contraindicated due to tendency to compress through fragments, thereby shortening the articular segment. Therefore, plate fixation is typically employed. Our hypothesis was that in a comminuted fracture model, 2.7 mm reconstruction plating without locking screws will perform equally to 3.5 mm locked plating in terms of fracture displacement and rotation (shear).Materials and methodsA three-part comminuted olecranon fracture pattern was created in nine matched pairs of cadaveric specimen using an oscillating saw in standardized, reproducible fashion. Each matched pair was then randomized to receive either 2.7 mm reconstruction plating or 3.5 mm proximal ulna locked plating. Random allocation software was used to assign the 2.7 mm plate construct to either the right or left side of each pair with the contralateral receiving the 3.5 mm plate construct. Specimens were cyclically loaded simulating passive range of motion exercises commonly performed during rehabilitation. Displacement and rotation in relation to the long axis of the ulna were measured through motion capture. Fragment gapping and rotation was quantified following 100 cycles at 10 N and again following 100 cycles at 500 N.ResultsNo significant differences were detected between the 2.7 and 3.5 mm plates in fracture rotation or gapping following loads at 10 N (0.5° and 0.7°; 0.6 and 1.2 mm; respectively; p > 0.05) or 500 N (2.3° and 1.6°; 3.8 and 3.1 mm; respectively; p > 0.05) loading. Fragment rotation and gapping were positively correlated within each plate construct (R2 > 0.445; p < 0.05).Conclusions2.7 mm plating is an alternative to 3.5 mm locked plating with decreased plate prominence without significantly sacrificing displacement and rotational control. This is beneficial in fracture patterns where the traditional dorsal plating does not offer optimal screw trajectory.

Although tension band wiring (TBW) is popular and recommended by the AO group, the high rate of complications such as skin irritation and migration of the K-wires cannot be ignored. Ding’s screw tension band wiring (DSTBW) is a new TBW technique that has shown positive results in the treatment of other fracture types. The objective of this study was to evaluate the stability of DSTBW in the treatment of olecranon fractures by biomechanical testing. We conducted a Synbone biomechanical model by using three fixation methods: DSTBW, intramedullary screw and tension band wiring (IM-TBW), and K-wire TBW, were simulated to fix the olecranon fractures. We compared the mechanical stability of DSTBW, IM-TBW, and TBW in the Mayo Type IIA olecranon fracture Synbone model using a single cycle loading to failure protocol or pullout force. During biomechanical testing, the average fracture gap measurements were recorded at varying flexion angles in three different groups: TBW, IM-TBW, and DSTBW. The TBW group exhibited measurements of 0.982 mm, 0.380 mm, 0.613 mm, and 1.285 mm at flexion angles of 0°, 30°, 60°, and 90° respectively. The IM-TBW group displayed average fracture gap measurements of 0.953 mm, 0.366 mm, 0.588 mm, and 1.240 mm at each of the corresponding flexion angles. The DSTBW group showed average fracture gap measurements of 0.933 mm, 0.358 mm, 0.543 mm, and 1.106 mm at the same flexion angles. No specimen failed in each group during the cyclic loading phase. Compared with the IM-TBW and TBW groups, the DSTBW group showed significant differences in 60° and 90° flexion angles. The mean maximum failure load was 1229.1 ± 110.0 N in the DSTBW group, 990.3 ± 40.7 N in the IM-TBW group, and 833.1 ± 68.7 N in the TBW group. There was significant difference between each groups ( p  < 0.001).The average maximum pullout strength for TBW was measured at 57.6 ± 5.1 N, 480.3 ± 39.5 N for IM-TBW, and 1324.0 ± 43.8 N for DSTBW. The difference between maximum pullout strength of both methods was significant to p  < 0.0001. DSTBW fixation provides more stability than IM-TBW and TBW fixation models for olecranon fractures.

To assess the optimal surgical approach and costs for patients hospitalized with septic bursitis. From May 1, 2011, through December 24, 2014, hospitalized patients with septic bursitis at University of Geneva Hospitals were randomized (1:1) to receive 1- vs 2-stage bursectomy. All the patients received postsurgical oral antibiotic drug therapy for 7 days. Of 164 enrolled patients, 130 had bursitis of the elbow and 34 of the patella. The surgical approach used was 1-stage in 79 patients and 2-stage in 85. Overall, there were 22 treatment failures: 8 of 79 patients (10%) in the 1-stage arm and 14 of 85 (16%) in the 2-stage arm (Pearson χ test; P=.23). Recurrent infection was caused by the same pathogen in 7 patients (4%) and by a different pathogen in 5 (3%). Outcomes were better in the 1- vs 2-stage arm for wound dehiscence for elbow bursitis (1 of 66 vs 9 of 64; Fisher exact test P=.03), median length of hospital stay (4.5 vs 6.0 days), nurses' workload (605 vs 1055 points), and total costs (Sw₣6881 vs Sw₣11,178; all P<.01). For adults with moderate to severe septic bursitis requiring hospital admission, bursectomy with primary closure, together with antibiotic drug therapy for 7 days, was safe, effective, and resource saving. Using a 2-stage approach may be associated with a higher rate of wound dehiscence for olecranon bursitis than the 1-stage approach. Clinicaltrials.gov Identifier: NCT01406652.

Introduction Treatment for complex olecranon fractures with metaphyseal comminution can be challenging. To improve reduction maneuvers and augment stability, we apply a small medial and/or lateral locking compression plate (LCP) prior to placing a posterior contoured 3.5 mm–2.7 mm LCP. The aim is to describe our technique and outcomes of this “orthogonal” plating technique. Material and Methods 26 patients were treated with orthogonal plating. Clinical outcome variables were available for all patients at a median of 27 months (IQR 6–54), and patient-reported outcomes (Q-DASH and MEPS) for 23 patients at 38 months (IQR 18–71). Results All fractures healed at a median of 2.0 months (IQR 1.5–3.8). The median elbow flexion was 120°, extension-deficit 15°, pronation 88°, and supination 85°. The median Q-DASH was 9 (IQR 0–22) and the median MEPS was 90 (IQR 80–100). Hardware was electively removed in seven patients. One patient had a late superficial infection that resolved with hardware removal and antibiotics, and one patient had two consecutive re-fractures after two hardware removals; and healed after the second revision surgery. Conclusion Orthogonal plating with a posterior LCP and a small medial and/or lateral LCP is a safe technique that leads to excellent healing rates, and good clinical and patient-reported outcomes.

Background Several clinical and biomechanical studies on tension band wiring (TBW) using a ring-pin system have been conducted, but no consensus has been reached on the ideal surgical technique. In this study, we aimed to determine the ideal interval and length of ring pins for the treatment of transverse olecranon fractures using TBW with a ring-pin system. Methods A biomechanical study was performed using 32 fourth-generation composite ulnae and a ring-pin system specially designed for TBW. Four groups of eight sawbones were created based on the interval and length of the ring pins. A cyclic loading test was performed to measure stability during the active range of motion exercises. A load-to-failure test measured the maximal load until fixation loss. Results All groups were stable, with a micromotion of < 1.0 mm, except for Group 3 (length: 50 mm, interval: 10 mm) during the cyclic loading test. The mean micromotion and displacement of Group 3 were significantly higher than those of Groups 2 and 4 (length: 90 mm, interval: 10 mm). The maximal load to failure in Group 3 was significantly lower than that of Groups 2 and 4. Conclusion Inserting two ring pins in parallel at a 10-mm interval with a length of ≥ 70 mm for TBW in transverse olecranon fractures is recommended. Further widening of the pin interval provides no biomechanical benefit and may result in technical difficulties owing to the anatomical features of the ulna; in summary, 50-mm ring pins show significantly lower mechanical strength.

Background Displaced olecranon fractures with a stable elbow joint are classified as Mayo type 2a or 2b and are commonly operated with tension band wiring, i.e. two K-wires and a cerclage. Retrospective studies have reported fewer reoperations and complications with cerclage fixation alone when compared to tension band wiring, though with similar long-term results. We decided to compare tension band wiring to cerclage fixation of displaced, stable olecranon fractures in adults in a randomized controlled trial. Methods All patients ≥ 18 years old with Mayo type 2a and 2b fractures presenting at Skåne University hospital will be eligible for study inclusion, unless exclusion criteria are met. Two hundred participants will be included and randomized 1:1 to cerclage fixation or tension band wiring. Outpatient physiotherapist follow-up appointments will be scheduled at 2 and 6 weeks and at 3, 12, and 36 months at the Dept. of Orthopaedics. A lateral view radiograph of the elbow will be analysed at 6 months. The primary outcome of our study is the rate of reoperations. Secondary outcomes are complication rates, severity of complications, and patient-reported outcome measures ( Quick DASH, Short Musculoskeletal Function Assessment, pain level, and patient satisfaction). The sample size was calculated to give 80% power for detecting a statistically significant difference in reoperation rates (with alpha-value 0.05), based on a previous retrospective study. Discussion Reoperation and complication rates after tension band wiring of olecranon fractures are high. Treatment of these injuries is debated, and several ongoing trials compare tension band wiring with plate fixation, suture fixation, and non-operative treatment. As data from retrospective studies indicate that cerclage fixation may be superior to tension band wiring, we see a need for a randomized controlled trial comparing these methods. The WOW-OK Trial aims to obtain level-1 evidence that may influence treatment choice for this type of fracture. Trial registration ClinicalTrials.gov NCT05657899 . Registered on 16 November 2022. The trial complies with SPIRIT and CONSORT guidelines. The SPIRIT figure is found in Table 2.

Background Operative treatment of a displaced, transverse, noncomminuted fracture of the olecranon is associated with good to excellent elbow function in retrospective short-term followup studies. However, to our knowledge, no studies have evaluated objective and subjective outcomes using standardized outcome instruments (ie, DASH and Mayo Elbow Performance Index [MEPI]) to quantify long-term outcome of these specific fractures. Questions/purposes We evaluated (1) factors associated with disability, as measured with the DASH questionnaire; (2) factors associated with ulnohumeral motion; (3) factors associated with pain intensity; and (4) general descriptive findings for posttraumatic arthrosis, MEPI, ulnar neuropathy symptoms, and return to work between 10 and 32 years after open reduction and internal fixation (ORIF) of a transverse, noncomminuted fracture of the olecranon. Methods Between 1977 and 1997, we performed ORIFs of transverse, noncomminuted olecranon fractures in 109 patients, of whom 35 had died, 14 had incomplete data in our registry, and 19 were lost to followup or declined participation, leaving 41 patients available for followup at a minimum of 10 years after surgery. During that time, our general indication for performing ORIF was greater than 2 mm displacement. The average age of these patients at the time of injury was 35 years (range, 18–73 years). Patient-reported outcome was quantified using the DASH questionnaire, and physician-based outcome was evaluated using the MEPI. To identify factors associated with disability (DASH), impairment (MEPI), ulnohumeral motion, and pain, we examined demographic and clinical data in bivariate analyses, and subsequently significant factors in multivariate analysis to identify independent predictors of outcome. Results The sole factor associated with higher DASH scores in multivariable analysis was age at surgery, explaining 20% of the variability, with younger patients performing better. The mean arc of elbow flexion was 142° (range, 110°–160°), and the variation was associated with arthrosis alone (ie, a greater arc of motion was associated with a lesser grade of arthrosis according to the system of Broberg and Morrey). Pain was uncommon and generally was correlated with adverse events. Conclusions The good results of operative fixation (tension-band wiring) of a transverse, displaced olecranon fracture are durable with time. Patient-reported outcomes are excellent in the majority of patients. Residual patient-rated disability does not correlate with arthrosis or loss of extension. Level of Evidence Level IV, therapeutic study. See the Guidelines for Authors for a complete description of levels of evidence.