Elbow fractures: distal humerus

Bicolumnar 90-90 Locking Plate Fixation Through a Posterior Approach for the Treatment of Low Distal Humeral Fracture in Elderly Patients

Background and objective Treating transcondylar humeral fractures in elderly individuals remains a challenge in trauma surgery, with plate fixation being one potential treatment method. This retrospective study was conducted to assess the effectiveness of plate fixing through a posterior approach in elderly individuals suffering from distal humeral fractures. Methods This retrospective study involved 28 older participants aged ≥65 years with low transcondylar fractures of the humerus (AO/OTA 13A2-3 fractures). We used the 90-90 orthogonal method for treatment. The inclusion criteria were as follows: (1) low transcondylar type of distal humeral fractures (13A2-3 according to the AO/OTA classification system), (2) patients aged ≥65 years, and (3) a follow-up period of at least 12 months. The exclusion criteria were as follows: polytrauma, pathological injuries, chronic elbow osteoarthritis or degenerative arthropathy, and fractures impacting the articular surface of the distal humeral. Clinical outcomes were assessed in terms of the visual analog scale (VAS) score, Mayo Elbow Performance Score (MEPS), and range of motion (ROM) of the elbow joint. Results The mean age of the patients was 72.25 years (range: 65-81 years), of which 14 (50%) were female and 14 (50%) were male. The mean VAS score for pain was 2.7 (range: 0-6). The mean angle of flexion was 130.6^o (range: 115-140^o), and the mean angle of the extension was -27.7 (range: -21 to -34). Regarding MEPS, 23 patients had an excellent score, four patients had a good score, and one patient had a poor score. There were four complications (two major and two minor) in the patients involved in the study. Conclusion Based on our findings, 90-90 plate fixation for low distal humeral fractures is associated with a high union rate and satisfactory clinical outcomes. Although we found complications in four patients, their healing was not affected. Therefore, we concluded that through improved monitoring and care, we could overcome such complications, and they did not affect the healing of the bone.

A less invasive operative method using a medial cannulated cancellous screw and single plate fixation for the treatment of transcondylar fracture of the humerus in elderly patients in multicenter (TRON group) study

BACKGROUND

Double plate fixation for transcondylar fracture (TCF) tends to be more invasive to the soft tissue, and often carries a higher risk of postoperative complications, including ulnar nerve neuropathy. This study presents the outcomes of TCF of the distal humerus between patients treated with a single plate and cannulated cancellous screw fixation and patients treated with double plate fixation.

METHODS

Between 2011 and 2021, 371 cases involving treatment of distal humeral fracture were recorded in our multicenter (named TRON group) database. Patients of ≥ 65 years of age with TCF treated with opeb n reduction and internal fixation were included. Clinical outcomes were assessed by the Mayo elbow performance score, range of motion, and total elbow arc joint. Complications included fracture-related infection (FRI) and ulnar neuropathy.

RESULTS

There were significant differences in the average operative time (CCS group vs. Plate group: 119.0 min vs. 186.5 min; p < 0.001) and average tourniquet time (CCS group vs. Plate group: 91.5 min vs. 121.0 min; p < 0.001). FRI occurred as a complication in the Plate group (n = 6). The rates of FRI did not differ to a statistically significant extent (CCS group vs. Plate group: 0% vs. 9.2%; p = 0.477). No patients underwent reoperation. The rate of sensory symptoms in the Plate group was higher than that in the CCS group (CCS group: none [n = 25], numbness [n = 1] vs. Plate group: none [n = 57], numbness [n = 15], sensory depression [n = 2]; p = 0.039).

DISCUSSION

Among patients of ≥ 65 years of age with TCF, the clinical outcomes of patients treated with medial CCS and lateral/posterolateral plate did not differ from those of patients who received double plate fixation, and the former treatment was associated with significantly fewer complications, including ulnar nerve palsy. In addition to double plate fixation, this less invasive method of medial CCS and single plate fixation should be considered as a treatment option for TCF in elderly patients.

Distal humerus fracture in patients over 70 years of age: results of open reduction and internal fixation

BACKGROUND

Due to the complexity of distal humerusfractures and often poor bone quality in elderly patients, these entities remain a challenge. However, because of a high rate of complications related to total elbow prostheses, reconstruction of distal humerus fractures should still be considered a therapeutic option, also in the elderly patient. The purpose of the present study was to investigate the clinical outcomes after open reduction and internal fixation and to evaluate whether the results justify reconstruction even in elderly patients. We hypothesized that despite advanced age, reasonable clinical results can be achieved, using a standardized surgical technique and aftertreatment protocol for the treatment of distal humerus fractures in elderly patients.

METHODS

Between 2004 and 2012, 30 patients with a mean age of 78 years at the time of injury with a recent distal humerus fracture were evaluated. All patients underwent the identical aftertreatment protocol with no weight bearing for 6 weeks and weekly increasing range of motion. Follow-up rate was 90%. 22 patients were treated with double plate, 4 with single plate, and 1 with screw fixation only. Patients were evaluated based on clinical criteria. Primary outcome measures were Mayo Elbow Performance Score, VAS and joint range of motion, secondary was radiological evaluation.

RESULTS

After a mean follow-up period of 3.8 years (min. 1 year, max. 9 years, SD ± 2), the average range of motion was flexion of 127° (min. 100°; max. 150°; SD ± 16.5) and average loss of extension of 20.9° (min. 5°; max. 40°; SD ± 11). Average pronation and supination was 68.3° (min. 0°; max. 90°; SD ± 25.3) and 75.3° (min. 0°; max. 90°; SD ± 19.7), respectively. Average Mayo Elbow Performance (MEPS) score was 88.7 (min. 60; max. 100; SD ± 12.1). 6 patients developed heterotopic ossification without significant effect on the clinical outcome. 7 patients had radiological evidence of at least partial non-union with one requiring revision, 2 discrete hardware dislocations were treated conservatively. There were no infections in the presented cohort. Our results regarding the surgical approach showed significantly higher patient satisfaction scores in the osteotomy group, compared to the group with Triceps-On Approach (PTOA).

CONCLUSION

The present data support indication for open reduction internal fixation (ORIF) even in the elderly patient. Advanced age should not be seen as a contraindication for ORIF of fractures of the distal humerus. Although the rate of complications is higher than in younger patients, complications such as non-union are often asymptomatic, patient satisfaction scores are high, and the possible devastating complications of failed elbow replacement can be evaded.

LEVEL OF EVIDENCE

IV.

Results of the distal humeral hemiarthroplasty Latitude in distal humeral unreconstructable fractures treatment in patients older than 65 years old

AIM

The aim of this study is evaluate clinical and radiographic outcomes of Latitude elbow hemiarthroplasty in the treatment of articular distal humerus multifragmentary fractures in patients older than 65 years.

MATERIAL AND METHODS

We included those patients older than 65 years who sustained an unreconstructable articular distal humeres fracture and it was replace with a Latitude hemiarthroplasty. We excluded those with a minimum follow up less than 2 years. The clinical outcomes were assessed with Mayo Elbow Performance Score (MEPS). Range of motion, pain, complications and elbow radiological assessments were recorded at the final follow up.

RESULTS

We have found that after a mean follow-up of 5 years, the five patients included in the study have mild pain in the elbow. They have recovered a median flexion arch of 100°, with a 10° extension lag. The MEPS was considered as good in all the cases. There were not any instability or prosthesis loosening, but two patients developed a moderate proximal cubitus wear.

CONCLUSION

Latitude elbow arthroplasty is an option in the distal articular humerus multifragmentary fractures treatment in osteoporotic and ageing patients with satisfactory results as long as the elbow ligamentous stability can be restored.

A pilot biomechanical study comparing a novel, intramedullary Nail/Plate construct to standard Dual-Plate fixation of intra-articular C2.3 distal humerus fractures

BACKGROUND

The gold-standard treatment for intra-articular distal humerus fractures (DHFs) is dual-plate/dual-column fixation, though optimal orientation is not yet established. With a superior method not yet identified, we propose a load-sharing construct, combining absolute stability (extramedullary plate fixation) for distal articular fragments and relative stability (load-sharing intramedullary nail) for the metaphyseal segment. The purpose of this pilot study was to evaluate the biomechanical performance of a novel implant compared to orthogonal dual-plating.

MATERIALS AND METHODS

Ten fresh-frozen matched-pairs of human cadaveric upper extremities with no prior elbow pathology/surgery were used. Pairs were randomized into two groups: Dual-Plate (medial and posterolateral) or novel Nail/Plate (cross-locked medial nail and posterolateral plate). AO/ASIF type 13-C2.3 multifragmentary fractures with simulated metaphyseal comminution. Biomechanical testing included stiffness (MPa) and load to failure (Newtons) in axial (100 cycles at 3 Hz at 20 N increments from 20 to 100 N) and coronal (varus/valgus; 4,000 cycles from 50N-100 N at 3 Hz) planes. Failed specimens were not analyzed and mechanisms were identified. For all failures, mechanisms were identified and reviewed by three consultant surgeons for revision vs. immobilization, to attempt to recreate a real-world scenario. All outcomes were compared between groups.

RESULTS

During stiffness testing, zero Nail/Plate specimens failed, but two (20%) Dual-Plate specimens failed (mechanisms: fracture diastasis; bone collapse and intussusception into osteotomy, yielding articular congruency loss). For remaining samples, Nail/Plate (n = 10) coronal (varus/valgus) stiffness was comparable to Dual-Plate (n = 8) constructs (41.5 vs. 39.0 MPa, p = 0.440). Remaining Dual-Plate constructs had greater axial overall stiffness than Nail/Plate (118.3 ± 48.3 vs. 95.6 ± 34.7 MPa, p = 0.020). Failure loads were comparable between Nail/Plate and Dual-Plate constructs (1,327.8 vs. 1,032.4 N, p = 0.170). Individual nail yield strength ranged from 1,101.1-1,124.4 N (n = 2). In review of all failures, the most common overall mechanism was fracture/osteotomy site posterolateral plate bending. Revision recommendation rate was comparable between constructs (Nail/Plate, 22.2% vs. Dual-Plate, 44.4%, p>0.05).

CONCLUSIONS

The novel Nail/Plate construct demonstrated non-inferior coronal (varus/valgus) stiffness, despite producing lower axial stiffness than orthogonal dual-plating, potentially due to the load-sharing cross-locked design. Considering comparable biomechanical performance, with no failures and comparable recommendations for revision, this novel construct warrants further evaluation as an alternative to the gold-standard, dual-plate fixation method for intra-articular distal humerus fractures.

LEVEL OF EVIDENCE

N/A.

Surgical exposures of the distal humeral fractures: An anatomical study of the anterior, posterior, medial and lateral approaches

PURPOSE

Exposure of the articular surface is the key to the successful treatment of intra-articular fractures of distal humerus. Anterior, posterior olecranon osteotomy as well as medial and lateral approaches are the four main approaches to the elbow. The aim of this study was to compare the exposure of distal articular surfaces of these surgical approaches.

METHODS

Twelve cadavers were used in this study. Each approach was performed on six elbows according to previously published procedures. After completion of each approach, the exposed articular surfaces were marked by inserting 0.5 mm K-wires along the margins. The elbow was then disarticulated and the exposed articular surfaces were painted. The distal humeral articular surfaces were then closely wrapped using a piece of fibre-glass screen net with meshes. The exposed articular surfaces and the total articular surfaces were calculated by counting the number of meshes, respectively.

RESULTS

The average percentages of the exposed articular surfaces for the anterior, posterior olecranon osteotomy, medial and lateral approaches were 45.7% ± 2.0%, 53.9% ± 7.1%, 20.6% ± 4.9% and 28.5% ± 6.3%, respectively.

CONCLUSION

The anterior and posterior approaches provide greater exposures of distal humeral articular surface than the medial and lateral ones in the treatment of distal humeral fractures.

Methyl methacrylate in external fixation of supracondylar humerus fractures: An experimental study

Supracondylar humerus fractures are common fractures around the elbow. Open fractures, comminuted metaphyseal fractures and also fractures with bone loss may need to be treated with external fixators. The aim of this study is to compare two different external fixators, tubular external fixators and polymethyl methacrylate with K wires external fixators, with regard to stiffness and stability for metaphyseal-diaphyseal osteotomies of distal humerus close to the joint. Six matched pairs (24 specimens) of second-generation sawbone humerus were prepared in a standard fashion to create a metaphyseal fracture, 5 cm proximal to the distal joint line of humerus and were randomly divided into two groups of 12 specimens each. Each sawbone humerus was osteotomized transversely at the mid-olecranon fossa with a 2-mm oscillating saw to simulate a Gartland type III fracture. The osteotomy was then reduced and stabilized using two different external fixation methods: carbon tubular external fixator with Schanz screws and methyl methacrylate with multiple K wires. Three-point bending and torsion tests were performed on the specimens. Bending and torsional stiffness of specimens were obtained for the fixation methods. According to the results of the study, the methyl methacrylate group has provided higher stiffness than classical tubular fixator with Schanz screws in three-point bending test (7.79 ± 2.33 N/mm vs 3.78 ± 1.18 N/mm, p = 0.006). The methyl methacrylate group also showed better stiffness in torsion test (0.12 ± 0.042 N m/° vs 0.067 ± 0.013 N m/°, p = 0.02). We determined for the first time in literature that external fixation with methyl methacrylate was significantly superior to the classical tubular external fixator with Schanz screws with regard to stiffness and stability under three-point bending and torsional loads. Moreover, methyl methacrylate is inexpensive and easily applied.

Biomechanical properties of orthogonal plate configuration versus parallel plate configuration using the same locking plate system for intra-articular distal humeral fractures under radial or ulnar column axial load

INTRODUCTION

Previous reports have questioned whether an orthogonal or parallel configuration is superior for distal humeral articular fractures. In previous clinical and biomechanical studies, implant failure of the posterolateral plate has been reported with orthogonal configurations; however, the reason for screw loosening in the posterolateral plate is unclear. The purpose of this study was to evaluate biomechanical properties and to clarify the causes of posterolateral plate loosening using a humeral fracture model under axial compression on the radial or ulnar column separately. And we changed only the plate set up: parallel or orthogonal.

MATERIALS AND METHODS

We used artificial bone to create an Association for the Study of Internal Fixation type 13-C2.3 intra-articular fracture model with a 1-cm supracondylar gap. We used an anatomically-preshaped distal humerus locking compression plate system (Synthes GmbH, Solothurn, Switzerland). Although this is originally an orthogonal plate system, we designed a mediolateral parallel configuration to use the contralateral medial plate instead of the posterolateral plate in the system. We calculated the stiffness of the radial and ulnar columns and anterior movement of the condylar fragment in the lateral view.

RESULTS

The parallel configuration was superior to the orthogonal configuration regarding the stiffness of the radial column axial compression. There were significant differences between the two configurations regarding anterior movement of the capitellum during axial loading of the radial column.

DISCUSSION

The posterolateral plate tended to bend anteriorly under axial compression compared with the medial or lateral plate. We believe that in the orthogonal configuration axial compression induced more anterior displacement of the capitellum than the trochlea, which eventually induced secondary fragment or screw dislocation on the posterolateral plate, or nonunion at the supracondylar level. In the parallel configuration, anterior movement of the capitellum or trochlea was restricted because of the angular stability of the plate and locking screws in the condyle.

CONCLUSIONS

The posterolateral plate tended to bend anteriorly under axial compression of the radial column in the orthogonal configuration, which led to secondary displacement of the posterolateral plate and eventual screw loosening.

The clinical outcome and activity levels of patients under 55 years treated with distal humeral hemiarthroplasty for distal humeral fractures: minimum 2-year follow-up

BACKGROUND

The aim of the present study was to describe the clinical outcomes and activity levels of young patients after distal humeral hemiarthroplasty (DHH).

METHODS

Six patients under 55 years (mean 44 years; range 29 years to 52 years) treated with DHH at a mean postoperative time of 81 months (range 24 months to 133 months) were studied retrospectively. Two other patients had been revised for aseptic loosening and were excluded.

RESULTS

The mean Mayo Elbow Score (MEPS) (88), Subjective Elbow Value (SEV) (89), Quick Disabilities of the Arm, Shoulder and Hand (QuickDASH) (12) and American Shoulder and Elbow Surgeons (ASES) elbow pain (6), function (23) and satisfaction scores (9) were satisfactory. The mean University of California, Los Angeles (UCLA) activity score was 7.2.

CONCLUSIONS

Although only rarely indicated, DHH has satisfactory clinical outcomes in young patients and allows a higher level of function than is generally advised after total elbow arthroplasty.

Treatment of Intercondylar Humeral Fractures With 3D-Printed Osteosynthesis Plates

The aim of the study was to evaluate the efficacy custom 3D-printed osteosynthesis plates in the treatment of intercondylar humeral fractures.Thirteen patients with distal intercondylar humeral fractures were randomized to undergo surgery using either conventional plates (n = 7) or 3D-printed plates (n = 6) at our institution from March to October 2014. Both groups were compared in terms of operative time and elbow function at 6 month follow-up.All patients were followed-up for a mean of 10.6 months (range: 6-13 months). The 3D-printing group had a significantly shorter mean operative time (70.6 ± 12.1 min) than the conventional plates group (92.3 ± 17.4 min). At the last follow-up period, there was no significant difference between groups in the rate of patients with good or excellent elbow function, although the 3D-printing group saw a slightly higher rate of good or excellent evaluations (83.1%) compared to the conventional group (71.4%).Custom 3D printed osteosynthesis plates are safe and effective for the treatment of intercondylar humeral fractures and significantly reduce operative time.

Crisscross-type screw fixation for transcondylar fractures of distal humerus in elderly patients

INTRODUCTION

This study presents the outcomes of low transcondylar fractures of the distal humerus treated by closed reduction and internal fixation with two screws in a crisscross orientation.

MATERIALS AND METHODS

Between 2003 and 2009, ten consecutive elderly patients (1 man and 9 women) with transcondylar fractures of distal humerus (AO 13A2.3) were included in this study. The average age at the time of injury was 72 years (range 63-82). All were closed injuries without nerve injury. The mechanism of the injuries was low-energy fall or slip. Six patients had medical or other systemic diseases.

SURGICAL TECHNIQUE

After a closed reduction of the fracture fragments, two guide wires were inserted in a crisscross orientation; one from the lower lateral edge of the capitellum to the medial cortex of the distal humerus, and the other from the lower medial edge of the trochlea to the lateral cortex of the distal humerus. After drilling, fully threaded cannulated screws (4.5 mm in diameter) were inserted along the each guide wire. Functional outcome was assessed with Mayo Elbow Performance scores.

RESULTS

The mean operation time was 55 min (range 40-100 min). The average follow-up duration was 26.8 months (range 24-35 months). The mean Mayo Elbow Performance scores were 93.8 (range 90-99). The elbow extension-flexion arc was 12(o)-125(o). The mean pronation-supination angle was 74(o)-72(o).

CONCLUSION

In geriatric patients with transcondylar fractures of the distal humerus, a crisscross fixation with two cannulated screws provides satisfactory results that allow a nearly full range of elbow motion with minimal surgical morbidity.

Low transcondylar fractures of the distal humerus: results of open reduction and internal fixation

BACKGROUND

This study presents the outcomes of low transcondylar fractures of the distal humerus treated by open reduction and internal fixation.

METHODS

Between 1996 and 2010, 263 distal humeral fractures were managed at our institution. Patients with a true low transcondylar fracture treated by open reduction and internal fixation were included. Fourteen patients form the basis of this study. Fracture fixation was achieved through a triceps-sparing approach, a triceps tongue, or an olecranon osteotomy. Internal fixation was performed with parallel plates, orthogonal plates, a single lateral plate, or a single medial plate. The clinical outcome was measured with pain levels, range of motion, and the Mayo Elbow Performance Score. Radiographs at latest follow-up were assessed for union, delayed union, nonunion, and hardware failure.

RESULTS

At most recent follow-up, 11 patients had no pain, 2 had mild pain, and 1 had moderate pain. The mean Mayo Elbow Performance Score was 85. The mean arch of motion was 95°. Complications included nonunion, delayed union, wound complications, deep infection, and heterotopic ossification.

DISCUSSION

Stable internal fixation of low transcondylar fractures is perceived as difficult to achieve because of the very small size of the distal fragment. However, the results of our study indicate that internal fixation of low transcondylar fractures of the distal humerus is associated with a high union rate and satisfactory clinical results. Elbow arthroplasty does not need to be considered for most patients with a low transcondylar distal humeral fracture.

Wound complications after distal humerus fracture fixation: incidence, risk factors, and outcome

BACKGROUND

This study set out to accurately determine the incidence of wound complications after distal humerus fracture fixation, to assess risk factors, and to determine their implications on outcome.

METHODS

Eighty-nine distal humerus fractures (mean patient age, 58 years) were treated with internal fixation at an average of 4 days after injury. Mean follow-up time was 15 months (range, 6-72 months). Twenty-nine (33%) fractures were open. Medical records and radiographs were reviewed to determine wound complications. Logistic regression analysis was carried out to determine associated risk factors.

RESULTS

Fourteen patients (15.7%) developed a major wound complication requiring on average 2.5 (range, 1-6) additional surgical procedures. Six patients required plastic surgical soft tissue coverage. All 14 fractures complicated by wound problems united. The final mean range of motion in the major wound complication group was 100° (range, 65°-130°), compared with 100° (range, 10°-140°) in those with no or minor wound problems. Grade III open fractures and the use of a plate to stabilize the olecranon osteotomy were identified as significant risk factors for development of major wound complications.

CONCLUSIONS

The incidence of major wound complications after fixation of distal humerus fractures is substantial. The presence of a grade III open fracture and the use of an olecranon osteotomy stabilized with a plate are significant risk factors for major wound complications. Fracture healing rates and functional elbow range of motion do not appear to be affected by major wound complications when they are handled with proper soft tissue coverage techniques.

Unreconstructable acute distal humeral fractures and their sequelae treated with distal humeral hemiarthroplasty: a two-year to eleven-year follow-up

BACKGROUND

The aim of this study was to describe for the first time the medium to long-term outcome after distal humeral hemiarthroplasty (DHH).

METHODS

Twenty-six patients (mean age, 62; range, 29-92 years) treated with DHH for intra-articular distal humeral fractures and its sequelae were studied retrospectively.

RESULTS

Four patients had died and 4 had been revised to total elbow arthroplasty: 2 for periprosthetic fractures and 2 for primary component loosening (all in prostheses without an anterior flange). Six other complications had occurred: ulnar neuritis, 4; stiffness, 1; and wound necrosis, 1. Seventeen patients underwent assessment at a mean of 80 months after surgery. The mean values of the American Shoulder and Elbow Surgeons (ASES) elbow score (pain, 9.93; function, 25; satisfaction, 9.06); Mayo Elbow Performance Score (90); Quick Disabilities of Arm, Shoulder and Hand (19), and EuroQol EQ5D (Index, 0.84; Visual Analog Scale, 80) outcome measures demonstrated good function and satisfaction with little pain. The mean flexion extension arc was 116°. There was no evidence of instability. Radiologic evidence of ulnar wear was seen in 13 patients and may be related to prosthetic design to some extent. Worse wear was associated with a higher ASES pain score, lower satisfaction score, and lower EuroQoL Visual Analog Scale of quality of life. Degree of wear correlates with time after surgery but not with age at the time of surgery.

CONCLUSION

DHH offers a treatment option for unreconstructable distal humeral fractures and is associated with a good long-term outcome.

LEVEL OF EVIDENCE

Level IV, case series, treatment study.

Open reduction and bi-columnar internal fixation of intra-articular distal humerus fractures through a combined medial and lateral approach

PURPOSE

The aim of this retrospective study was to investigate the suitability of bi-columnar internal fixation through a combined medial and lateral approach for the treatment of intra-articular distal humerus fractures.

METHODS

Nineteen cases of intra-articular distal humerus fractures were treated with open reduction and bi-columnar internal fixation through a combined medial and lateral approach. The reduction in the articular surface and functional recovery of the affected elbows was assessed at an average follow-up of 15.8 ± 7.9 (7-43) months.

RESULTS

The gap in the main articular fragments was less than 1 mm in 16 cases, while a gap of more than 1 mm and less than 2 mm was identified in 2 cases and of 3.7 mm in one case. All the fractures were united. At the latest follow-up, the mean flexion-extension of the elbows was 113.4° ± 20.7°, while the pronation-supination of the forearms was 158.3° ± 8.5°, and the mean Mayo Elbow Performance Index was 93.7 ± 9.1 points, leading to 13 excellent outcomes, and 6 with good results.

CONCLUSIONS

Intra-articular fractures of the distal humerus can be effectively treated by open reduction and internal fixation through a combined medial and lateral approach at the elbow.

[Fracture endoprosthesis of distal humerus fractures]

The treatment of choice for fractures of the distal humerus is double plate osteosynthesis. Due to anatomical preshaped angle stable plates the primary stability and management of soft tissues has been improved. However, osteoporotic comminuted fractures in the elderly are often not amenable to stable osteosynthesis and total elbow arthroplasty has been established as an alternative therapy. Although complication rates have been reduced, complications of total elbow arthroplasty are still much more frequent than in total hip replacement. Furthermore, patients are advised not to exceed a weight bearing of 5 kg. Therefore, the indications for elbow arthroplasty must be evaluated very strictly and should be reserved for comminuted distal humeral fractures in the elderly with poor bone quality that are not amenable to stable osteosynthesis or for simple fractures in cases of preexisting symptomatic osteoarthritis. This article introduces and discusses modern concepts of elbow arthroplasty, such as modular convertible prosthesis systems, hemiarthroplasty and radial head replacement in total elbow arthroplasty.

Distal humeral coronal plane fractures: management, complications and outcome

BACKGROUND

Coronal plane fractures of the distal humerus have special characteristics in classification, imaging, surgical approaches, materials used, treatment modalities, and complications. The purpose of this study is to comment on these topics.

MATERIALS AND METHODS

A retrospective analysis was done for patients with distal humeral coronal plane fractures. They were classified according to Dubberley and functionally evaluated by Mayo Elbow Performance Index (MEPI). The long-term complications were evaluated.

RESULTS

There were 15 patients, with type 1 fractures in 2, type 2 in 6, and type 3 in 7. All patients were treated by open reduction and internal fixation either by lateral or posterior approach. The average MEPI score was 83.3 (range, 60-100) points with 7 excellent, 2 good, and 6 fair results. The MEPI scores of type 3 fractures were significantly lower than those of types 1 and 2 fractures (P = .037 and P = .002, respectively). The complications were avascular necrosis in 4 (27%) patients, degenerative arthritis in 6 (40%), joint step-off in 6 (40%), heterotopic ossification in 7 (47%), nonunion in 1 (7%), and implant failure in 1 (7%). The presence of avascular necrosis and joint step-off were significantly associated with degenerative arthritis (P = .004 and P = .005, respectively). Heterotopic ossification was significantly associated with presence of lateral epicondyle fracture (P = .004).

CONCLUSION

Type 1A and 2A coronal plane fractures typically had an excellent outcome. However, type 3 and subtype B fractures are prone to developing complications which are primarily avascular necrosis, degenerative arthritis and heterotopic ossification.

Treatment of AO Type C Fractures of the Distal Part of the Humerus through the Bryan-Morrey Triceps-Sparing Approach

Several alternative approaches have been described to avoid the complications related to the olecranon osteotomy used to treat distal articular humerus fractures. The published experience with the triceps-sparing approach is scant. In this prospective study, a total of 12 patients with an articular humeral fracture were treated using this approach. At a mean followup of 1,7 years, the average range of motion was 112.8° (range from 85° to 135°); the elbow flexion averaged 125.5° (range from 112° to 135°) and the deficit of elbow extension 14.6° (range from 0° to 30°). All the elbows were stable. The Mayo Elbow Performance Score (MEPS) averaged 93.3 (range from 80 to 100). In the present series no failure of the triceps reattachment to the olecranon was found, and all the patients recalled returning to their previous daily life activities without impairment with a satisfactory MEPS. As a conclusion, the triceps-sparing approach can be considered for treating distal articular humerus fractures. We consider that three clinical settings can be more favorable to use this approach: those cases in which a total elbow prosthesis might be needed, cases of ipsilateral diaphyseal fracture, or presence of previous hardware in the olecranon.

Open reduction and internal fixation of intraarticular fractures of the humerus: evaluation of 33 cases

Background

Standard treatment of type C elbow fractures is open reduction and internal fixation using reconstruction plates and pins.

Objectives

The aim of this study was to evaluate the functional outcome following internal fixation of intraarticular fractures of the distal humerus (AO Type C) with a minimum follow-up of three years. A retrospective evaluation was undertaken.

Patients and Methods

Thirty-three patients (28 males, 5 females; mean age 34.3years) type C elbow fractures were treated and observed over a period of three years. Six fractures were open and 27 closed; causes were falls (7 cases), traffic accidents (22 cases) and altercation (4 cases). All operations were performed using a posterior approach with an olecranon osteotomy. Mean duration of follow-up was 18 months (range 6–36). Mean duration of fracture healing was 2.3 months (range 2–4). Functional outcomes were assessed by Jupiter criteria.

Results

Excellent results were found in 69.7% (23 cases), very good reaults and good results were found in the remaining 30.3% (10 cases). Three of 33 patients 9% (3 cases) presented postoperative complications. No patient exhibited symptoms of ulnar nerve injury following surgery. One patient had cubitusvarus deformities and one case had heterotopic ossification. One patient had malunion and one case had deep infection.

Conclusions

Complications were minimal and outcomes were satisfactory in patients with type C distal humerus fractures who underwent bilateral plate fixation via a posterior approach.

Locking and Non-locking Constructs Achieve Similar Radiographic and Clinical Outcomes for Internal Fixation of Intra-articular Distal Humerus Fractures

BACKGROUND

Locking plates have been used increasingly for the management of distal humerus fractures. Studies that compare patient-centered outcomes between locking and non-locking fixation for distal humerus fractures are lacking.

QUESTIONS/PURPOSES

The purposes of this study were to (1) determine whether locking plates offered superior fixation compared with non-locking plates for distal humerus fractures, (2) determine whether the use of locking plates was associated with fewer complications, and (3) determine whether locking plate use resulted in superior radiographic outcome compared with non-locking plates. Lastly, another aim was to determine the average cost difference associated with locking plate use versus non-locking plate use for distal humerus fracture fixation.

PATIENTS AND METHOD

Demographic, clinical, and radiographic data including loss of fixation, range of motion, rate of infection, nonunion and reoperation, as well as measures of fixation were collected retrospectively and compared on 96 patients with surgically treated AO type 13C distal humerus fractures (65 locking, 31 non-locking) at 6-week and 6-month follow-up. Average costs of locking and non-locking constructs were calculated and compared.

RESULTS

Three in 96 (3.1%) of all cases experienced loss of fixation, with no difference between the two groups. There was no difference between locking and non-locking groups with regard to the rate of nonunion, infection, and reoperation at 6 weeks and 6 months. On average, locking plate constructs were 348% more expensive than non-locking constructs.

CONCLUSION

While there are some significant differences in radiographic parameters and cost between locking and non-locking constructs for internal fixation of intra-articular distal humerus fractures, there were no statistically significant differences in clinical outcome.

Pin and plate fixation in complex distal humerus fractures: surgical technique and results

PURPOSE

Complex distal humerus fractures are difficult to fix by conventional methods, especially in comminuted low distal humerus fractures. We propose a technique using small diameter K-wires and a plate on the humeral shaft.

METHODS

Between May 2007 and March 2009, 19 patients with poor bone quality showing comminuted or low distal humerus fractures involving the articular surface were referred to our institution and were primarily treated by this technique that we called "pin and plate fixation". We have reviewed all the cases treated by this method.

RESULTS

The average age was 46 years. All of the patients were followed up for a mean of 12 months and had a good range of motion (the average total arc of flexion-extension was 99°); the average Disabilities of the Arm, Shoulder and Hand (DASH) score was 18 points. The Mayo Elbow Performance Index was measured and the mean score was 88 in our patients.

CONCLUSIONS

In this study, a technique has been evaluated for the treatment of complex distal humerus fractures. We recommend this technique in comminuted, osteoporotic or low distal humerus fractures in which other fixation methods seem difficult or even impossible.

Outcome of type C (AO) distal humeral fractures: follow-up of 22 patients with bicolumnar plating osteosynthesis

BACKGROUND

In the last 40 years, 220 patients with type C distal humeral fractures (AO13-C1-3) were treated at our hospital operatively. Aim of this study is to present results of patients treated by dual plating osteosynthesis in the last decade and to compare them with our previous series (A-C).

MATERIALS AND METHODS

From 1999 to 2008, 48 distal humeral fractures were treated operatively by perpendicular dual plating osteosynthesis. Twenty-two patients (mean age 43.5 years) were available for follow-up. These patients were allocated on the basis of retrospective evaluation, exploration of their medical history, x-rays based on the AO-classification, and functional outcome using CASSEBAUM, JUPITER, and Quick-DASH (Disabilities of the Arm, Shoulder and Hand) scores.

RESULTS

The dominant side was affecting in 42.9%. Transolecranon approach was chosen in 86.4%. Good/excellent results were found in 86.4% (CASSEBAUM) and 81.8% (JUPITER). Mean Quick-DASH was 36.1 ± 28.4. Mean range of motion (ROM) was 0/10.9°/128.2°. Mean hospitalization time was 12.9 days, 22.7% were polytrauma patients. Early mobilization was possible in 81.8%.

CONCLUSION

Early mobilization was possible in the majority of cases, which may be a prerequisite for satisfying functional results. Using new locking plates, early mobilization could be maintained even in an aging population.

Use of orthogonal or parallel plating techniques to treat distal humerus fractures

Distal humerus fractures continue to be a complex fracture to treat. This article describes two surgical techniques that can be used to tackle these difficult fractures: Parallel plating and orthogonal plating. Both techniques have yielded excellent outcomes after open reduction and internal fixation; yet each has its own set of unique considerations. However, the key to successful treatment of these difficult fractures regardless of technique remains obtaining anatomic reduction with stable fixation and the implementation of early motion.

Bilateral plate fixation for type C distal humerus fractures: experience at a single institution

Type C fractures of the distal humerus are difficult to treat and typically require open anatomical reduction and internal fixation. Here we describe our experience treating patients with type C distal humerus fractures using a trans-olecranon approach with bilateral plate fixation. Fifty-six patients (30 males, 26 females; mean age 49.8 years) were treated over a period of six years. Thirteen fractures were open and 43 closed; all were caused by falls or traffic accidents. All operations were performed successfully with no intraoperative complications. Mean duration of follow-up was 30 months (range 6-70). Mean duration of fracture healing was 2.8 months (range 2-4). Forty-seven out of 56 patients (84%) suffered no postoperative complications. One patient exhibited symptoms of ulnar nerve injury following surgery (nine exhibited symptoms before and after surgery). Two patients had mild cubitus varus deformities, four delayed olecranon osteotomy site healing, and two heterotopic ossifications. In summary, complications were minimal and outcomes satisfactory in patients with type C distal humerus fractures who underwent bilateral plate fixation via a trans-olecranon approach.