In Displaced Intracapsular Hip Fractures (ICHF) in young active patients, preservation of the femoral head and its blood supply are of high importance and urgent surgical treatment with anatomic reduction and internal fixation is the preferred intervention. Due to the strong varus displacement shear forces exerted across the hip, there are relatively high complication rates after fixation. There is no consensus regarding the optimal fixation device or technique. This retrospective study compared closed reduction internal fixation method using cannulated cancellous screw (CCS) with the Targon Femoral Neck (TFN) hip fixed angle screw. Data regarding, gender, operational data, duration of surgery, complications, NAS (Numerical Analogue Scale) pain score, Modified Harris Hip Score (MHHS) and SF-12 scores were retrieved for patients younger than 65 with displaced ICHF. Eighty-two patients were included in the study, 30 patients treated with CCS were compared to 52 patients treated with TFN. Fracture configuration (Garden and Pauwel classifications), mean time to surgery and complication rate did not differ significantly. Operative time did differ significantly between groups (CCS 56 minutes, TFN 92 minutes, p<0.001). At final follow-up the CCS group reported less pain (NAS 2.3 vs 3.5, p< 0.049) and better Mental Health Composite score of SF-12 (p=0.017) compared to the TFN group. Complication rates for the treatment of displaced ICHF with TFN and CCS showed no significant differences; however, the functional outcomes, as presented by the NAS and Mental Health Composite score of SF-12, showed superiority for CCS treatment. As this fixation method is related to reduce costs, we suggest CCS for the treatment of displaced ICHF in the young population.

We evaluated the efficacy of using the expandable nail for treating non-union and malunion of the tibial and femoral shafts. Records of 20 patients were retrospectively reviewed: 12 had femoral non-union, 7 had tibial non-union, and one had tibial malunion. The bones underwent reaming and the largest possible nail sizes were inserted during reoperation.

The mean age of the patients was 35 years (26-49) in the tibia group and 53 years (23-85) in the femur group. The fractures were defined according to AO/OTA classification and divided between open and closed. The initial treatment was 6 interlocking intramedullary nails and 2 external fixation in the tibia group, and 6 interlocking intramedullary nails, 3 plates and screws and 2 proximal femoral nails in the femoral group. The respective intervals between the original trauma and re-operation were 12 months and 15 months and the respective operation times were 59 minutes (35-70) and 68 minutes (20-120).

All fractures healed satisfactorily without the need for an additional procedure. Healing time was 26 weeks (6-52) and 14 weeks (6-26) in the tibia and femur group, respectively. Limb shortenings of 10cm and 4cm were recorded in one patient each in the tibia group and of 3cm in one patient in the femur group.

Using the expandable nail system permitted us to ream the bone and expand the nail to its maximal diameter, i.e. up to 16mm in the tibia and 19mm in the femur. We believe that using a bigger nail diameter contributes to better stabilisation of the fracture and promotes better and faster bone healing.

Based on our experience, we recommend the use of the expandable nail system to treat tibia and femur shaft non-unions and malunions.

We evaluated the efficacy of using the expandable nail for treating non-union and malunion of the tibial and femoral shafts.

Records of 20 patients were retrospectively reviewed: 12 had femoral non-union, 7 had tibial non-union, and one had tibial malunion. The bones underwent reaming and the largest possible nail sizes were inserted during reoperation.

The mean age of the patients was 35 years (26–49) and in the tibia group and 53 years (23–85) in the femur group. The fractures were defined according to AO/OTA classification and divided between open and closed. The initial treatment was 6 interlocking intramedullary nails and 2 external fixation in the tibia group, and 6 interlocking intramedullary nails, 3 plates and screws and 2 proximal femoral nails in the femoral group. The respective intervals between the original trauma and re-operation were 12 months and 15 months and the respective operation times were 59 minutes (35–70) and 68 minutes (20–120).

All fractures healed satisfactorily without the need of an additional procedure. Healing time was 26 weeks (6– 52) and 14 weeks (6–26) in the tibia and femur group, respectively. Limb shortenings of 10 cm and 4 cm were recorded in one patient each in the tibia group and of 3 cm in one patient in the femur group.

Using the expandable nail system permitted us to ream the bone and expand the nail to its maximal diameter, i.e., up to 16 mm in the tibia and 19 mm in the femur. We believe that using a bigger nail diameter contributes to better stabilization of the fracture and promotes better and faster bone healing.

Based on our experience, we recommend the use of the expandable nail system to treat tibia and femur shaft non-unions and malunions.

Objective: To evaluate and present our experience using the expandable nail system for the treatment of tibial shaft fractures.

Design: Retrospective study.

Setting: Level 1 Trauma Center – University teaching hospital.

Methods: Fifty-nine consecutive patients treated by this nail system for tibia fracture, fifty-four were acute fractures and five non-unions that were not included in the study. Two nail diameters were used, 8.5mm and 10mm. Operation, hospitalization and healing times, reaming versus non-reaming, isolated versus multiple injuries and re-operations were recorded and analyzed statistically.

Results All fractures healed in an average time of 72 days. The average healing times for patients treated with an 8.5 mm and 10 mm nail were 77.2 days and 63.4 days respectively. Average operative time was 103 minutes if reamed and 56 minutes if unreamed. Average healing times were 65.4 if reamed and 79.5 days if unreamed. Hardware was removed in 6 patients, and one patient underwent exchange nailing due to a delayed union. Operative time was shorter in the motor-vehicle group, 74 minutes in comparison to 80 and 84 minutes for the fall and pedestrian group.

Conclusion: The expandable nail offers the theoretical advantages of improved load sharing and rotational control without the need for interlocking screws. This study demonstrates satisfactory healing and alignment for the treatment of tibial shaft fractures using this device.

Purpose of the study: To evaluate the efficacy and safety of a novel intramedullary, expandable and self-locking system for stabilization of proximal femoral fractures.

Patients and methods: Since October 2001, Fixion ® PF Nails have been implanted in 112 patients (84f / 28m) with mean age of 76.4 years (40–97). Ninety patients were operated for intertrochanteric fractures, and 22 for subtrochanteric fractures. The system consists of a diaphyseal nail and a femoral head peg. The nail is an expandable tube that, once inserted (unreamed) into the medullary canal, expands by 60%, using saline solution under controlled pressure. The expansion causes abutment of the nail longitudinal bars to the inner surface of the canal, resulting in excellent hold. The hip peg includes an expandable distal end, which, once expanded, condenses the travecular bone and enhances the femoral head grip and rotational stability.

Results: Average operative time was 62; minutes (25–90) and average fluoroscopy exposure 1.44 minutes (0.46–4.26). Perioperative blood loss was negligible. Optimal alignment was restored in all cases. No significant operative problems or complications were reported. Union was demonstrated in all cases within 12 weeks, except for two cases of severe osteoporosis, in which delayed cut-out of the implant was reported.

Conclusions: This minimally invasive procedure, requiring no reaming or use of interlocking screws, is user-friendly, safe, reduces the operative and fluoroscopy time, eliminates the risk of postoperative femoral shaft fracture and provides optimal ultimate outcome.

Introduction: Long bone fracture treatment with interlocking intramedullary nails is associated with long operative procedures, re-operations and long periods of infirmity. We assessed the clinical and economical factors associated with tibial fracture fixation with interlocking nails in comparison to fixation with an expandable stainless steel intramedullary nail.

Methods: Eighty diaphysial tibial fractures were consecutively treated with either an interlocking intramedullary nail (n=53 patients) or an expandable nail (n=27 patients).

Results: The duration of surgery was 139 minutes with interlocking nails and 52.9 minutes with expandable nails (p< 0.001). Re-hospitalization and re-operations were required in 51% and 42% of patients with interlocking nails respectively, compared to one patient (3%) with an expandable nail (p< 0.0001). Complications related to the introduction of interlocking screws (e.g., neurological deficits, screw breakage and delayed or non-union requiring dynamization) occurred in 19 interlocking nail patients and in none of the expandable nail patients. Union was achieved after 17.5 weeks (mean) with the interlocking nails compared to 11.5 weeks for expandable nails (p=0.071). The beneficial economic ramifications of using expandable nails were a 39% reduction in hospital expenses.

Conclusions: The use of an expandable stainless steel intramedullary nail is associated with a substantial reduction in clinical complications and hospital costs. An expandable nail features a unique fixation modality, which has superior mechanical fixation strength and is better adapted to the physiological bone healing process.

Based on these advantages, as well as its simplicity in use and short surgical technique, we recommend it for treatment of long bone fractures.

Purpose of Study: To evaluate the results of our first consecutive cases using Fixion nail for treatment of femoral shaft fractures.

Materials and Methods: Thirty consecutive patients treated at our department with the expandable Fixion nail for femoral fractures were evaluated in a prospective study. Demographic, preoperative, operative and follow-up data was collected from admission and out-patients files. The pre- and post-operative X-rays were evaluated by two senior authors to determine fracture classification (AO/ASIF-CCF), union and healing. This data was inserted into excel file for statistics and evaluation.

Results: The average age was 36 years. Fourteen fractures were due to MVA, 10-falls, 2-crush injuries, 2-non-unions, 1-pathological and one from gunshot wound. Six fractures were open. Twenty eight were middle shaft fractures and two were distal. Three primary nail diameters were used 8.5mm, 10mm and 12mm.

All fractures healed at an average time of 9.2 weeks (5–26) and for the open fractures 19 (12–26) weeks. Hardware was removed in 8 cases with no complications. In two cases re-operation was needed. In one early case the nail was fractured and replaced. In the second case the bone was circlaged due to fragmentation around the fracture site and a bigger nail was inserted few days later (wrong smaller nail was inserted previously).

Conclusions: This preliminary clinical study demonstrates our experience treating femoral fractures with Fixion nail. We find this nail to be simple for use and with satisfactory healing and alignment results.

The incidence of comminuted proximal femur fractures is increasing, due to the growing proportion of elderly people in the general population. Severely depleted cancellous bone in the femoral head and neck prevent stable proximal purchase, mandatory for intertrochanteric and subtrochanteric fractures. Osteoporotic bones are associated with high implant failure rates, evidenced by cutout and upward screw penetration of the hip joint.

A new method for femoral head fixation is described. The peg consists of a distal end that can expand in diameter from 7.8mm to 10.5mm by using pressurized saline, allowing good abutment into the femoral head. The peg may be connected to a side plate or an intramedullary device for inter or subtrochanteric fractures.

Materials and Methods: Ten femoral heads were retrieved from patients who underwent hip hemiarthroplasty due to subcapital fracture. The heads were covered with a transparent epoxy resin until full solidification was obtained. An 8mm drill-hole was used to drill from the distal femoral neck along the femoral head axis, not penetrating the subchondral bone and cartilage. Afterwards, 1.4mm drill was used to penetrate the cartilage and subchondral bone of the femoral head for insertion of a pressure gage. Intraosseous pressure measurements were then recorded. The peri-prosthetic bone density was evaluated by Dual Energy X-ray Absorptiometry (DEXA) and Microradiography Computer Analysis in two stages: 1) with the peg unexpanded, and 2) with the peg expanded. In addition, Instron 8871 tested axial load, pullout and rotatory strengths of the peg.

Results: Increased periprosthetic bone density following peg expansion was demonstrated on DEXA and microradiography with no increase in the intraosseous pressure. The friction coefficient of the bone implant interface, calculated by axial load measurements, was less than the coefficient of steel to steel. Pullout and rotatory strengths were as good as those reported for the Dynamic Hip Screw (DHS).

Conclusions: Bone stock preservation due to compression of the depleted cancellous bone (rather than removed bone by drilling) may improve the mechanical properties of the periprosthetic bone and the stability of the fixation. Due to the strong abutment of the peg, hardware failure, mainly bone cutout can be reduced. Due to its lower friction coefficient, the hip peg will begin to slide following axial load through the plate or the intramedullary device, rather than penetrating the femoral head.

Preliminary positive results indicate that this new method may be suitable for inter or subtrochanteric femoral fracture fixation.

Between the years 1999 and 2001, approximately 3000 expandable intramedullary nails were used worldwide in various surgical procedures. From this number, 250 of these nails were used for traumatic fractures and are the focus of the study presented here. The subjects consisted of 160 males and 90 females with a mean age of 41 years. Initial radiographs were obtained for all subjects. Additional X-rays and follow-up data were reported for only 75 patients (30%) with follow-up time averaging 18 weeks. Most of the fractures occurred in the midshaft (64%), followed by distal thirds (22%), and then proximal (14%). The group was then divided according to fracture location: humerus, tibial and femur.

The nail was used in 92 humerus fractures. Follow-up data was available for 35 patients with a follow-up time averaging 16 weeks. The nail was inserted retrograde in 61% of the patients and antigrade in 39% of the patients. Partial reaming was done in 42% of the cases. Mean operating time was 52 minutes and fluoroscopy time was 3.8 minutes. Anatomical reduction was achieved in 96% of the cases and in 4% of the cases, acceptable reduction was achieved with a varus < 10°. Surgical outcomes included 28 complete bone union, and 7 partial union. Eight nails were removed after complete union was achieved.

In addition, the inflatable nail was used for treatment of 114 tibial fractures. In 39% of the cases a partial reaming was done. Average operating time was 39 minutes and fluoroscopy time was 3.4 minutes. All the fractures were reduced anatomically. In 25 patients with mean follow-up of 18 weeks, 14 united completely and 11 united partially. Nine nails were removed after completion of the union.

Data on 44 patients with femoral fractures treated by the inflatable nail were also reported. Only 15 patients were available for follow-up with an average of 21 weeks follow-up time.

Nail insertion by the antegrade approach was used in 89% of the patients and the retrograde approach was used in 11% of the patients. Partial reaming was done in 44% of the cases.

Mean operating time was 60 minutes and fluoroscopy time 7.5 minutes. Anatomical reduction was achieved in all with the exception of two patients with mild valgus deformity (< 10°). By the end of the study period, 8 had complete union, 7 had partial union.

In summary, the nail was found to be very effective and safe. The surgeons who performed the surgery reported that surgical and fluoroscopy time were both reduced by half. Reaming was not mandatory and this contributed to the shortened operating time. No complications were encountered during extraction of all the nails after completion of union, even in those patients in whom the nail developed an hour glass configuration according to the size of the medullary canal.

It is still too early to conclude if this nail will produce better or equal results to the conventional interlocking nails. Nevertheless, the lack of reaming, locking, and the low contact area of the nail with the medullary canal, may explain the rapid healing observed in some cases.

Introduction: Fractures of the proximal humerus account for 4–5% of all fractures. The number one cause of this type of fracture is age related osteoporosis associated with minimal trauma. Approximately 80% of these fractures are non or minimally-displaced, and can be treated conservatively with good results. However, treatment of displaced complex fractures is still controversial. The disadvantage of open procedures is the risk of damaging the blood supply to the humeral head, leading to a higher incidence of avascular necrosis.

Closed Reduction and Percutaneous Fixation (CRPF) is a minimal invasive procedure with a lower risk of damaging the blood supply. The main complication of this technique is loosening of the guide wires and displacement of the fragments requiring a second operation.

Purpose: The guide wire loosening leads us to improve the technique by adding an external fixator to stabilize the guide wires and secure fragment positioning. We report our experience of treating displaced fractures of the proximal humerus with Closed Reduction and External Fixation (CREF).

Materials and methods: Between the years 1996–2001 we operated on 37 patients for 38 complex fractures and fracture dislocations of the proximal humerus. We had 16 two part fractures, 13 three part fractures, 3 four part fractures, 5 two part fracture dislocation and 1 four part fracture dislocation according to the Neer’s classification.

The mean age was 60 years old ranging from 16–90 with a male to female ratio of 1:1. The patients were placed in a beach chair position using an image intensifier for AP and axillary views. Because the closed reduction was unsatisfactory, six patients underwent open reduction and external fixation. The remaining 32 shoulders underwent CREF.

Passive motion exercises were initiated on the first postoperative day. The external fixator was removed after four to six weeks (mean time for external fixator – 5.3 weeks). After removing the external fixator the patients began with active assisted mobilization of the shoulder and isometric strengthening exercises.

Results: The average follow up was 31.6 months (range 6–60 months). No loosening was observed upon removal of the external fixator, however the following complications were encountered: 5 patients had superficial pin tract infections, 1 patients developed an avascular necrosis of the humeral head, 1 patient had a non union of the fracture. Of the remaining patients, 13 patients had an excellent result, 15 patients had a good result and 5 patients had a fair result.

Conclusions: CREF is a minimal invasive technique for complex fractures of the proximal humerus, greatly reducing the damage to the blood supply when compared to open surgical procedures. It offers a better stabilization than CRPF, thus reducing the complication rate. The percutaneous technique causes less scaring and therefore a shorter rehabilitation program. Consequently, this procedure is recommended for complex fractures of the proximal humerus.