The Lapidus Arthrodesis: Examining the Effect of the Metatarsal Base Transfixion Screw.

The modified Lapidus bunionectomy is a useful and highly powerful procedure for correcting hallux abducto valgus. Traditionally reserved for "severe" deformities, this procedure has seen a recent resurgence in the podiatric community for its unique ability to achieve tri-planar correction of this challenging deformity. Although this procedure has been extensively studied in both biomechanical labs and the clinical arenas, no clear consensus has been achieved regarding optimal fixation for this thought-provoking procedure. The current study examined the differences in strength between commercially available 5-hole locking plates with interfragmentary compression vs a crossed-screw with a third "transfixation" screw construct in a controlled setting. Ten fresh-frozen cadaveric match pair limbs (20 total limbs) were used to complete this study. Ten limbs were randomly assigned to a 3-screw construct. The other 10 contralateral limbs were assigned to a commercially available 5-hole locking plate (5 stainless steel and 5 titanium alloy) with an interfragmentary lag screw construct. The first rays were then isolated and potted into a 4-point bending device. The specimens were loaded to failure in a servohydraulic load frame at a controlled rate. Failure was defined as catastrophic or 3 mm of plantar gapping at the arthrodesis site. The mean maximal load to failure was 310.9 ± 109.4 N for the 3-screw construct. The mean maximal load to failure for the locking plate constructs was 264.1 ± 100.9 N. This difference was not statistically significant (p = .328). These results suggest that a 3-screw construct for Lapidus arthrodesis is as strong as commercially available locking plate constructs.

Reconstruction After Osteomyelitis of the Midfoot From High-Pressure Washer Injury.

Reports of ballistic injures to the extremities typically include those involving gunshot wounds. However, high-pressure washer injuries frequently lead to equally damaging injuries. These injuries should not be overlooked, because they can result in high morbidity and complication rates. Similar to the open fracture protocol, these injuries require prompt debridement and irrigation with administration of antibiotics to avoid limb loss. The present case report identified a delay in the treatment protocol that left limited options for the patient. However, the patient agreed to undergo staged reconstruction consisting of serial debridement, implantation of a polymethylmethacrylate antibiotic spacer, and eventual interpositional iliac crest arthrodesis of the midfoot. At a follow-up point >5 years from the initial injury, the patient was walking with minimal pain and no limitations in his daily activities.

Procalcitonin as a Biomarker for Predicting Amputation Level in Lower Extremity Infections.

Inflammatory markers are essential tools in the decision-making process for lower extremity infections. When coupled with objective findings, clinicians can more accurately diagnose and treat these entities. Typically, markers such as the white blood cell count, erythrocyte sedimentation rate, and C-reactive protein are used to initially assess these patients or monitor the progression of medical or surgical therapy. Procalcitonin is a newer inflammatory marker that is specific for an infectious process. Originally, procalcitonin was used to monitor antibiotic therapy and sepsis for patients in the intensive care setting, but it has now been expanded to other facets of medicine. The utility of procalcitonin has been described for diagnosing infection or osteomyelitis in diabetic foot ulcers. However, limited research has compared inflammatory marker levels and the level of amputation. A retrospective inpatient medical record review was performed of 156 consecutive patient occurrences during 25 months in which surgical intervention was required for a lower extremity infection and an initial procalcitonin level had been obtained. This initial procalcitonin value was then compared with the level of amputation at the final surgical intervention. A highly statistically significant difference was found when comparing those who underwent a below-the-knee or above-the-knee amputation (median procalcitonin 1.72 ng/mL) and those who did not (median procalcitonin 0.105 ng/mL; p < .001). Therefore, patients with higher initial procalcitonin values were more likely to undergo below-the-knee or above-the-knee amputation or require aggressive surgical intervention. Thus, the procalcitonin level can provide valuable initial information to the clinician.

Medially based hallux interphalangeal joint arthroplasty in the management of hallux ulceration: surgical technique and result in six consecutive cases.

INTRODUCTION: Plantar hallux wounds are common in patients with diabetic neuropathy. Several techniques, both surgical and nonsurgical, are designed to offload plantar wounds. However, controversy exists regarding which techniques are superior in terms of efficacy, safety, and longevity. OBJECTIVE: This manuscript presents a simple, minimally invasive technique to permanently offload the plantar IPJ of the hallux in the case of recalcitrant plantar ulcerations. The authors describe their surgical technique for and outcomes of medially based hallux IPJ arthroplasty for the management of recalcitrant hallux ulcerations. MATERIALS AND METHODS: Five patients (6 wound cases) were evaluated. All patients underwent the same surgical procedure and were subject to the same postoperative protocol of full weight-bearing as tolerated. RESULTS: All 5 cases healed, with an average time to healing of 15.5 days (range, 10-22 days) and no instances of recurrence. The average time to final follow-up was 83.17 weeks (range, 54-95 weeks). CONCLUSIONS: The medially based hallux IPJ arthroplasty approach has demonstrated ability to adequately offload hallux ulcerations, permits bone biopsy or resection for treatment of underlying bone infection, and allows for immediate weight-bearing.

The Role of the Accessory Malleolar Ossicles and Malleolar Avulsion Fractures in Lateral Ankle Ligament Reconstruction.

While it is well known that ankle sprains are one of the most common injuries in the United States, predictive factors regarding failure of conservative treatment are not well known. There are many biomechanical and epidemiological factors that play a role in recurrence and failure of conservative treatment, but most cases are able to be treated with immobilization and/or rest, ice, elevation, physical therapy, and bracing. We propose that one important risk factor is often overlooked simply due to the fact that a vast majority of these cases resolve without the need for surgery. Accessory ossicles and avulsion fractures of the malleoli or talus may represent a predisposition or marker for ligamentous damage that may lead to the need for lateral ankle ligament repair or reconstruction in the future. We have identified 61 consecutive patients who underwent lateral ankle ligament repair or reconstruction by the primary surgeon from the years 2007 to 2017. Out of those patients who met our inclusion and exclusion criteria, 66% had the presence of osseous pathology consisting of accessory ossicles or avulsion fractures of the medial or lateral malleolus or talus. The proportion of osseous pathology seen with lateral ankle ligament repair or reconstruction was higher than what has been previously reported in both operative and nonoperative settings. This may help identify a risk factor for failure of conservative treatment in patients presenting with acute ankle sprains or ankle instability especially in the active cohort. LEVELS OF EVIDENCE: Level IV: Case series.