Anterior Cruciate Ligament Reconstruction Using Femoral Cortical Button Fixation: A Case Series of Intraoperative Malpositioning.

Background: Malpositioning of the femoral button is a known technical complication after anterior cruciate ligament (ACL) reconstruction with cortical suspensory fixation. The incidence of malpositioning, as well as the efficacy of methods to prevent malpositioning of cortical suspensory fixation devices, has not been reported. Purpose: To determine the rate of malpositioned cortical suspensory fixation devices after ACL reconstruction, investigate which intraoperative technique yields the lowest rate of malpositioning, and determine the return-to-duty rate for active-duty service members with malpositioned buttons and the revision rate for malpositioned buttons. Study Design: Case series; Level of evidence, 4. Methods: The records of patients who underwent primary ACL reconstruction with a cortical suspensory fixation device between 2008 and 2018 were reviewed at our institution. Postoperative radiographs were reviewed for evidence of malpositioned femoral buttons. Malpositioned buttons were classified as (1) fully positioned in the bone tunnel, (2) partially positioned in the bone tunnel, (3) >2 mm from cortical bone, or (4) deployed over the iliotibial band. Operative reports were reviewed to determine the intraoperative methods undertaken to verify the button position. The rate of malpositioned cases with subjective instability and revision surgery performed were determined. The ability of patients to return to full military duty was reviewed for active-duty personnel. Results: A total of 1214 patients met the inclusion criteria. A 3.5% rate (42 cases) of malpositioned cortical suspensory fixation devices (femoral buttons) was identified. For patients with malpositioned buttons, 7 (16.7%) patients underwent revision surgery in the immediate postoperative period. Techniques used to avoid malpositioning included direct arthroscopic visualization, direct open visualization, intraoperative fluoroscopy, and first passing the button through the skin before positioning on the femoral cortex. There was a 4.6% malposition rate using direct arthroscopic visualization and a 5.1% malposition rate using passage of the button through the skin, while no malpositioning occurred with intraoperative fluoroscopy or direct open visualization (P < .05). Overall, 12 (28.6%) patients with malpositioned buttons ultimately underwent revision surgery. Despite having been diagnosed with malpositioned buttons, 21 (63.6%) active-duty members were able to return to full duty. Conclusion: Malpositioning of femoral buttons during ACL reconstruction occurred in 3.5% of patients in this series. The techniques of intraoperative fluoroscopy and direct open visualization are encouraged to prevent malpositioning.

Prospective Results of the Modified Glide Path Technique for Improved Syndesmotic Reduction During Ankle Fracture Fixation.

BACKGROUND: Malreduction after syndesmotic stabilization occurs in as many as 52% of cases and has been shown to detrimentally affect clinical outcomes. We propose that the modified Glide Path technique reduces the occurrence of syndesmotic malreduction. METHODS: This study is a prospective series comparing 16 patients reduced with the modified Glide Path technique with a retrospectively reviewed series of 25 patients reduced with a traditional technique using fluoroscopy and a clamp. The modified Glide Path technique consists of manual reduction of the fibula and placement of a Kirschner wire through the fibula and tibia along the transmalleolar axis. The syndesmosis can then be reduced along the glide path created by the Kirschner wire to prevent posterior or anterior malreduction. Computed tomographic scans of the repaired and contralateral ankles were obtained postoperatively to assess reduction. RESULTS: We found a statistically significant decrease of syndesmotic malreductions using the modified Glide Path technique when compared with technique that did not use a glide path. In our study, 2 of 16 patients (12.5%) had syndesmotic malreductions using the modified Glide Path technique, compared with 11 of 25 patients (44%) with syndesmotic malreductions in the historical cohort. CONCLUSION: The modified Glide Path technique is a simple method for ankle syndesmotic reduction. The technique has lower rates of malreduction compared with historical methods and may be useful for most operative syndesmotic injuries. LEVEL OF EVIDENCE: Level II, prospective cohort study.

Has the Proportion of Combat-Related Amputations That Develop Heterotopic Ossification Increased?

OBJECTIVES: To determine what proportion of residual limbs formed heterotopic ossification (HO) in amputations sustained by US service members, the injury profile of these amputations, and what effect the number of limb amputations sustained has on resource utilization. DESIGN: Retrospective review. SETTING: A tertiary military medical center. PATIENTS: Four-hundred seventy-one consecutive patients with 714 combat-related amputations were treated at our institution between September 2009 and August 2014. Four-hundred thirty-nine amputations had radiographic follow-up beyond 2 months of injury and met the criteria for study inclusion. MAIN OUTCOME MEASURE: Formation and grade of HO. RESULTS: HO was present in 399 of 439 (91%) residual limbs, including 211 of 216 (98%) transfemoral amputations. Dismounted improvised explosive device blast injury resulted in HO development in 346 of 372 (93%) residual limbs compared with 36 of 44 (82%) in mounted improvised explosive device blast injury [P = 0.014; odds ratio (OR) 2.96, 95% confidence interval (CI), 1.25-7.04]. As the number of amputations per patient increased, so too did blood product utilization [including packed red blood cells (P < 0.001), fresh frozen plasma (P < 0.001), and platelets (P < 0.001)]; the number of days on a ventilator (P < 0.001), in the intensive care unit (P < 0.001), and in the hospital (P = 0.007). CONCLUSIONS: HO prevalence in the traumatic amputations of war wounded has increased compared with earlier studies, which is temporally associated with higher rates of increasingly severe injuries due to dismounted blast. LEVEL OF EVIDENCE: Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.