Arthrodesis of the Fourth and Fifth Tarsometatarsal Joints in a Sensate Patient with Post-Traumatic Arthritis: A Case Report and Surgical Technique.

Lateral column arthrodesis of the tarsometatarsal joints is a highly controversial topic in foot and ankle surgery, with minimal prospective research and reproducible findings in the current literature. Arthrodesis of the lateral fourth and fifth tarsometatarsal joints, when performed, is most often done secondary to post-traumatic osteoarthritis or Charcot's neuroarthropathy deformity. This case report focuses on arthrodesis of the lateral column in a patient with post-traumatic osteoarthritis from a previously sustained Lisfranc fracture-dislocation. The patient also experienced a cavus foot deformity that was addressed with a lateral displacement calcaneal osteotomy. Arthrodesis of the fourth and fifth tarsometatarsal joints was found to be successful on this patient, with bony union noted to occur radiographically 12 weeks postoperatively. In addition, the patient experienced significant reduction in her preoperative pain and an ability to return to activities of daily living. Regular visits during an 18-month postoperative period occurred, with the patient continuing to have satisfactory results and a significant reduction in preoperative pain levels. One postoperative complication was encountered 15 months postoperatively: painful hardware, which resulted in the removal of both calcaneal screws and one screw from the fourth tarsometatarsal arthrodesis site. This case report proposes that lateral column arthrodesis may be performed successfully in select patients where other joint-preserving procedures may not be applicable. Herein we outline a suggested surgical technique with hardware that can be used to reproduce these findings and assist surgeons who are unfamiliar with performing this procedure.

Is it safer at the beach? Spatial and temporal analyses of beachgoer behaviors during the COVID-19 pandemic.

Tourism localities worldwide continue to grapple with how best to sustain coastal visitation during the COVID-19 pandemic. Emerging epidemiological science illustrates the risk of disease transmission is lower outdoors than indoors, and exposure is likely lower in outdoor, coastal environments due to dispersion and dilution of respiratory droplets through regular air flow. That said, it remains unclear how beachgoer behavior affects the likelihood of disease transmission. During summer 2020, we analyzed publicly-available beachcam video data and collected unmanned aerial vehicle (UAV) imagery at the recreational beach oceanfront in Virginia Beach, U.S.A. Data were collected over 24 days, documenting tourists' and recreationists' behaviors related to the public health guidance from the U.S. Centers for Disease Control, Commonwealth of Virginia Department of Public Health and City of Virginia Beach. Specifically, using a sample test area of beach and adjoining boardwalk, we investigated diurnal patterns of beach and boardwalk use, the location and density of use, as well as the presence of face coverings (i.e., masks) on boardwalk users. Results from beachcam analyses indicate a curvilinear trend in beach use, peaking in the mid-afternoon, while boardwalk use remained consistent throughout the day. Beachcam observations were corroborated by UAV photography and spatial analysis, indicating concentrated use of the beach adjoining shoreline above high tide, with onethird of the landward adjacent upper beach vacant. Among boardwalk pedestrians, few (8.7%) were observed wearing facial coverings. These findings point to both indirect and direct strategies coastal managers can implement to communicate when, where, and how to reduce the potential for transmission while accessing beach amenities during the COVID-19 pandemic.

Lesser Metatarsophalangeal Joint Pathology Addressed With Arthrodesis: A Case Series.

Lesser metatarsophalangeal joint pathology is a common condition facing the foot and ankle surgeon, often beginning as a mild subluxation of the toe and progressing to a full dislocation of the metatarsophalangeal joint. In severe or recalcitrant deformities, traditional conservative and surgical methods can fail to resolve the issue. We report on 4 patients with 5 severely dislocated lesser metatarsophalangeal joints with varied etiologies and comorbidities who underwent arthrodesis of these joints using screw and plate fixation. All patients achieved radiographic and clinical signs of union at an average of 16.4 weeks.

The Role of Allograft Bone in Foot and Ankle Arthrodesis and High-Risk Fracture Management.

Allogenic bone graft has long been accepted as a standard of care in the surgical arthrodesis of the foot and ankle and treatment of certain high-risk, comminuted fracture types that have greater potential for delayed union or nonunion. It has been shown in multiple studies to be equivalent to autograft in regard to union rates without the morbidity associated with bone graft harvest. We present a retrospective study on the efficacy of an allogenic cancellous/periosteal cellular bone matrix with mesenchymal stem cells and angiogenic growth factors. The study includes a cohort of 41 procedures and 40 patients who underwent foot and ankle arthrodesis, fracture fixation, or a simultaneous combination of both. Radiographic consolidation of the fracture/fusion site was reviewed at regular intervals (first postoperative visit at 1 week and 4, 8, and 12 weeks and at regular intervals until healing was confirmed). Age, workmen's compensation insurance, diabetes, and nicotine use were evaluated as potential risk factors. Our retrospective study indicated that allograft bone has the potential to positively affect union rates in foot and ankle arthrodesis and certain high-risk fracture types that have potential for delayed union/nonunion. Levels of Evidence: Level IV.

Malignant Hidradenocarcinoma in the Lower Extremity: A Case Report of a Rare Tumor.

Malignant hidradenocarcinomas are rare soft tissue tumors of sweat gland origin. We present the case of a soft tissue, fungating tumor of 15 years' duration of the medial ankle in an 85-year-old male that exhibited malignant features clinically and radiographically. Subsequent punch biopsy revealed a diagnosis of malignant hidradenocarcinoma. Given the risk of recurrence and the poor radiation and chemotherapy options, the patient initially decided to leave the lesion untreated. However, he soon developed lower extremity cellulitis from the exposed lesion and decided to have the tumor excised, eliminating the source of the infection. In the present case study, we discuss the etiology, clinical and radiographic characteristics, and treatment options for this rare lesion. At the 18-month follow-up visit, he had had no recurrence of the lesion.