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Infected bunion — Clinical Guidelines

Overview

Infected bunions, a complication of hallux valgus (bunions), involve the first metatarsophalangeal joint becoming infected, often necessitating surgical intervention beyond standard bunion correction. 1

Diagnosis

Clinical signs include redness, swelling, warmth, and pain around the bunion.

Presence of purulent discharge may indicate infection.

Radiographic imaging to assess joint involvement and deformity severity.

Cultures and sensitivity tests are essential for identifying the causative organism and guiding antibiotic therapy. 3

Management

Antibiotic Therapy: Initiate broad-spectrum antibiotics based on culture and sensitivity results, adjusted as necessary. 3

Surgical Debridement: Early surgical intervention for thorough debridement and removal of necrotic tissue. 3

Preemptive Local Anesthetic Infiltration: May reduce postoperative pain, though evidence is primarily observational. 3

Postoperative Care: Close monitoring for signs of infection recurrence and appropriate wound management.

Joint Reconstruction: In severe cases, consider joint replacement or arthrodesis based on functional needs and joint status. 4 5

Special Populations

Elderly: Joint replacement (e.g., METIS® prosthesis) may offer better functional outcomes compared to arthrodesis. 4

Comorbidities: Patients with rheumatoid arthritis or gout may require tailored antibiotic choices and closer monitoring due to underlying conditions affecting healing and infection risk. 1

Key Recommendations

Perform early surgical debridement and appropriate antibiotic therapy guided by culture results for managing infected bunions. (Evidence: Strong 3)

Consider joint reconstruction options like modular press-fit prosthesis or arthrodesis based on patient-specific factors and joint status. (Evidence: Moderate 4 5)

Utilize preemptive local anesthetic infiltration to potentially reduce postoperative pain, though evidence is primarily observational. (Evidence: Weak 3)

References

1 Xie YL, Liang JY, Du GF, Lu HJ, Luo WJ, Wu JH et al.. The causal relationship between hallux valgus and endogenous pathogenic factors: A 2-sample Mendelian randomization. Medicine 2025. link 2 Ribeiro H, Sesterhenn RB, Souza A, Souza AC, Alves M, Machado JC et al.. Preoperative transcranial direct current stimulation: Exploration of a novel strategy to enhance neuroplasticity before surgery to control postoperative pain. A randomized sham-controlled study. PloS one 2017. link 3 Gądek A, Liszka H, Wordliczek J. Postoperative pain and preemptive local anesthetic infiltration in hallux valgus surgery. Foot & ankle international 2015. link 4 Kolodziej L, Bohatyrewicz A, Zietek P. First metatarsophalangeal joint replacement with modular three-component press-fit implant. Preliminary report. Acta chirurgiae orthopaedicae et traumatologiae Cechoslovaca 2013. link 5 Marks RM. Arthrodesis of the first metatarsophalangeal joint. Instructional course lectures 2005. link 6 Shamim A, Pande R, Maheshwari R. The double knot suture modification in Mitchell's osteotomy for hallux valgus. Orthopedics 2005. link 7 O'Brien T. The crescentic inverted scarf osteotomy. The Journal of foot and ankle surgery : official publication of the American College of Foot and Ankle Surgeons 2003. link 8 Torkki M, Linna M, Seitsalo S, Paavolainen P. How to report and monitor the performance of waiting list management. International journal of technology assessment in health care 2002. link 9 Pagliano JW. Angular surgical corrections for hallux valgus. Clinics in podiatric medicine and surgery 1997. link 10 Rankin ME, Rankin EA. Experience with the Keller bunionectomy. Journal of the National Medical Association 1996. link 11 Baxter DE. Treatment of bunion deformity in the athlete. The Orthopedic clinics of North America 1994. link 12 Keogh P, Nagaria J, Stephens M. Cheilectomy for hallux rigidus. Irish journal of medical science 1992. link 13 Cohen M, Roman A, Liessner P. A modification of the Regnauld procedure for hallux limitus. The Journal of foot surgery 1992. link 14 Katz JB. Correction of hallux varus via split tendon transfer. Journal of the American Podiatric Medical Association 1990. link 15 Guerin G. Geometric austin osteotomy. The Journal of foot surgery 1988. link 16 Dobbs BM. Arthroplasty of the fifth digit. Clinics in podiatric medicine and surgery 1986. link 17 Duranti R, Galletti R, Pantaleo T. Electromyographic observations in patients with foot pain syndromes. American journal of physical medicine 1985. link 18 Johnson KA. Total joint arthroplasty. The foot. Mayo Clinic proceedings 1979. link

Infected bunion