Purpose

The undulating pattern of the distal femur is well recognized. Radiographs do not always represent the full extent of the undulations. With recent increasing use of guided growth technique in the distal femur, it is important to define safe zones for screw placement.

Purpose: Posterior spinal fusion (PSF), with or without anterior spinal fusion (ASF), in conjunction with Luque rod instrumentation (LRI) and Galveston technique is a common procedure in neuromuscular spinal deformity. However, few studies have specifically studied the long-term results and complications of Galveston technique. The purpose of this study was to analyze the long-term results of Galveston technique in combination with PSF, with or without ASF, and LRI in the correction of neuromuscular spinal deformity. We were specifically interested in the stability of the distal foundation, lumbosacral fusion, correction of the associated pelvic obliquity, and complications.

Method: Analyzing our Pediatric Orthopaedic Spine Database between 1992–2006, we identified 107 consecutive patients with a neuromuscular spinal deformity who underwent a PSF, with or without ASF, and LRI including Galveston technique, who had a minimum of 2 years postoperative follow-up. There were 55 females and 52 males with a mean age at surgery of 13.5 ± 3.5 years. The mean follow-up was 7.8 ± 3.7 years. We analyzed the coronal and sagittal plane alignment and pelvic obliquity preoperatively, postoperatively, and at last follow-up. We recorded any complications directly related to the Galveston technique.

Results: The mean preoperative major curve was 76 ± 21 degrees. At last postoperative follow-up, this measured 33 ± 16 degrees. The mean preoperative pelvic obliquity was 17 ± 10 degrees and at last follow-up 7 ± 6 degrees. Seven patients (6.5%) had Galveston technique complications: three rod breakages, three implant distal migrations and one patient with both rod breakage and distal migration. These occurred late and only one patient required revision surgery.

Conclusion: The Galveston technique is an excellent procedure for lumbosacral stabilization in patients with neuromuscular spinal deformity. It provides a solid distal foundation for a lumbosacral fusion and for correction of spinal deformity and pelvic obliquity, with minimal complications.

Purpose: Determine the prevalence of complications in neuromuscular scoliosis surgery and to identify risk factors. We hypothesized that patients with smaller pre-operative curve magnitudes would have lower complication rates.

Method: Our Pediatric Orthopaedic Spine Database identified a cohort of 151 consecutive patients with neu-romuscular scoliosis who underwent corrective surgery between 1992 and 2005 and had a minimum of 2 years of follow-up. Twenty-two patients (15%) were excluded; 20 patients with a diagnosis of myelodysplasia and two due to death during the follow-up period. Preoperative, operative, and postoperative factors were analyzed for any association with major complications and length of stay (LOS) utilizing stepwise logistic and multiple regression. Only factors with p-values < 0.05 remained in the analysis models. Odds ratios were calculated for significant dichotomous variables and receiver operator characteristic (ROC) curves were created for significant continuous variables.

Results: There were 79 male and 50 female patients with a mean age at surgery of 13.4 years (range, 6 to 21 years). Eighty-seven patients (68%) underwent posterior spinal fusion (PSF) with segmental spinal instrumentation (SSI). and 42 patients (32%) underwent anterior spinal fusion (ASF) and PSF with SSI. Mean follow-up was 46.4 months (range, 24 to 251 months). There were 45 major complications in 37 patients (29% prevalence). Non-ambulatory status (p < 0.05) and a high preoperative Cobb angle (p < 0.01) were associated with an increasing prevalence of major complications. Non-ambulatory patients were almost four times more likely to have a major complication (OR of 3.8, p < 0.05) in comparison to ambulatory patients. A pre-operative Cobb angle ≥ 60 degrees (p < 0.01) was the most accurate predictor for an increased risk for major complication. Patients undergoing PSF with SSI only or combined ASF and PSF with SSI on the same day who sustained one major (p < 0.05) or two minor (p < 0.01) complications had a significantly increased LOS.

Conclusion: The prevalence of complications following surgery for neuromuscular scoliosis is high. Non-ambulatory status and higher preoperative Cobb curve magnitude are directly associated with an increased risk for major complication and indirectly associated with increased LOS.

Purpose: Determine if one or two pairs of pedicle screws were superior to multiple laminar hooks for the distal foundation segmental in spinal instrumentation (SSI) in the surgical correction of AIS.

Method: We analyzed 108 consecutive patients identi-fied from our Pediatric Orthopaedic Spine Database (1992–2005) that underwent a posterior spinal fusion (PSF) and segmental spine instrumentation (SSI). There were 3 patient groups: Group 1, one pair of pedicle screws for the distal foundation (n=12); Group 2, two or more pairs of pedicle screws (n=44) and Group 3, multiple hooks only (n=52). The mean age at surgery was 13.5 years, 14.1 years, and 13.0 years, respectively. The major curve was measured perioperatively and at one month, 6 months, 12 months, and 24 months postoperatively and the mean percentage of correction, as well as loss of correction determined. We also analyzed the length of surgery (hours), length of hospitalization and complications.

Results: The mean preoperative major curve was 52.5 degrees in Group 1, 52. degrees in Group 2, and 48.8 degrees in Group 3. The mean percent postoperative correction (POC%) at 1 month was 67.2, 65.2, and 63.4 % in the 3 groups, respectively (p=0.531). The mean percent post-operative correction (POC%) at 24 month was 55.6% for Group 1, 56.6% for Group 2 and 51.5% for Group 3 (p=0.478). The mean percent loss of correction (LOC%) at 24 months was 3.1%, 2.25%, and 2.9% respectively(p=0.648). One-way ANOVA demonstrated no significant differences in patient age, number of levels fused, length of surgery, or length of hospital stay. There were no implant related complications.

Conclusion: Hybrid constructs with one or more pairs of pedicle screws and all-hook constructs for distal foundations in SSI provided similar major curve correction, percentage postoperative correction, and are associated with a minimal loss of correction postoperatively. There was no significant difference between length of surgery, hospital stay or complications.

Introduction. Prospective evaluation of fibrinogen levels preoperatively and postoperatively in patients with idiopathic scoliosis undergoing posterior spinal fusion (PSF) and segmental spinal instrumentation (SSI) who received Amicar to decrease perioperative blood loss. Our previous randomized, double-blind (Amicar and control) study demonstrated a rise in fibrinogen levels on the first postoperative day in the Amicar group, but not in the control group. Fibrinogen levels were not measured on the remaining postoperative days.

Methods. We analyzed fibrinogen levels preoperatively and on all postoperative days (4 or 5 days) until discharge in 51 consecutive patients with idiopathic scoliosis, who received Amicar and underwent a PSF and SSI.

Results. There were 41 females and 10 males with a mean age at surgery of 14.2±1.8 years. Their mean hospitalization was 4.6±0.8 days. Their mean estimated intraoperative blood loss was 766±308ml and postoperative suction drainage 532±186ml for a total perioperative blood loss of 1297±311ml. The perioperative transfusion requirements were 0.5±0.6 units per patient. The preoperative fibrinogen was 255.5±58.3 mg/dl, and it rose steadily throughout the postoperative period to 680.9±111.9 mg/dl on the fifth postoperative day. There were no complications related to the use of Amicar.

Conclusions. Fibrinogen levels rise steadily throughout the postoperative period. The significance of this increase is unknown. Was it due to the use of Amicar or just the effects of surgery itself? Further investigations will be necessary.

Introduction: A comparison of the success of the thoracolumbosacral orthosis (TLSO) and the Providence orthosis in the treatment of adolescent idiopathic scoliosis (AIS) using the new Scoliosis Research Society’s (SRS) Committee on Bracing and Nonoperative Management inclusion and assessment criteria for bracing studies.

Methods: A retrospective study of brace patients with AIS between 1992 and 2004. We have used a custom TLSO (22 hour/day) and the Providence orthosis (8–10 hour/night) to control progressive curves. A total of 83 patients met the new inclusion criteria: 10 years of age and older at initiation of bracing; initial curve of 25 to 40 degrees; Risser sign 0–2; females, premenarchal or less than one year post menarchal; and no prior treatment. There were 48 patients in the TLSO group and 35 in the Providence group. The new SRS assessment criteria of effectiveness included the percentage of patients who had 5 degrees or less and 6 degrees or more of curve progression at maturity; the percentage of patients whose curve progressed beyond 45 degrees; the percentage of patients who had surgery recommended or undertaken; and a minimum of two years of follow-up beyond maturity in those patients who were felt to have been successfully treated. All patients are analyzed irregardless of compliance (“intent to treat”).

Results: There were no significant differences in age at brace initiation, initial primary curve magnitude, gender, or initial Risser sign between the two groups. In the TLSO group, only 7 patients (15%) did not progress (5 degrees or less), while 41 patients progressed 6 degrees or more (85%), including 30 patients that exceeded 45 degrees. Thirty-eight patients (79%) ultimately required surgery. In the Providence group, 11 patients (31%) did not progress, while 24 patients (69%) progressed 6 degrees or more, including 15 patients that exceeded 45 degrees. Twenty-one patients (60%) required surgery. However, when the initial curve at initiation of bracing was 25 to 35 degrees, the results improved. Five of 34 patients (15%) in the TLSO group and 10 of 24 patients (42%) in the Providence group did not progress, while 29 patients (85%) and 14 patients (58%) progressed 6 degrees or more and 26 patients (76%) and 11 patients (46%) required surgery, respectively.

Conclusions: Using the new SRS criteria, the Providence orthosis was more effective for avoiding surgery and preventing curve progression than the TLSO when the primary initial curves were 35 degrees or less. However, the overall success in both groups was inferior to previous studies. Our results raises the question of the effectiveness of orthotic management in AIS and supports the need for a multicenter, randomized study utilizing the new SRS inclusion and assessment criteria.

Introduction: This is a retrospective study of the effectiveness of Amicar in decreasing perioperative blood loss and the need for transfusion in same-day anterior (ASF) and posterior spinal fusion (PSF) with segmental spinal instrumentation (SSI) in idiopathic scoliosis. Preliminary prospective, prospective randomized double-blind and fibrinogen studies have demonstrated Amicar to be effective in decreasing perioperative blood loss in idiopathic scoliosis surgery. Increased fibrinogen secretion is a possible explanation.

Methods. Amicar is administered at 100mg/kg over 15 min not to exceed 5 grams at anesthesia induction. Maintenance is 10mg/kg/hr until wound closure. There were three study groups: Group 1, (n=15), no Amicar; Group 2, (n=27), Amicar for the PSF only; and Group 3, (n=16), Amicar for both ASF and PSF.

Results. The total perioperative blood loss (estimated intraoperative blood loss for the ASF and PSF procedures, measured suction drainage and measured chest tube drainage) and the transfusion (autologous and bank blood) requirements were: Group 1, 3807±105ml and 3.1±1.5 units; Group 2 2080±659ml and 1.9±0.9 units; and Group 3 2183±851ml and 1.0±0.8 units.

Conclusions. Amicar appears highly effective in decreasing perioperative blood loss and transfusion requirements in same-day ASF, PSF, with SSI in idiopathic scoliosis. This results in less preoperative autologous blood donation, blood transfusion, costs, and potential transfusion-related complications. It appears to be most effective in decreasing intraoperative PSF blood loss and chest tube drainage. It had no effect during the ASF. We now recommend that it be used for the posterior procedure only.

Fractures of the proximal humerus with concomitant vascular injury are rare in children. We describe the presentation, diagnosis, and treatment of a fracture of the proximal humerus in association with an axillary artery injury in a child.