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Great Toe Metatarsophalangeal Joint Arthroscopy: Simple Technique for Painful Nonunion.

ABSTRACT: Great toe metatarsophalangeal joint (MTPJ) arthroscopy was first described as a viable technique for a multitude of first MTPJ pathologies in the early 1970s; however, with improving arthroscopic technique and technology, these indications will continue to expand. Arthroscopy of the first MTPJ has increasingly become a new pursuit for foot and ankle specialists. Therefore, we have proposed a simple technique and illustration from our operating room setup to traction and to our procedural technique to make great toe arthroscopy simple and reproducible for arthroscopic foot and ankle surgeons.

SUBMITTER: Jones J

PROVIDER: S-EPMC8085319 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature

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Great Toe Metatarsophalangeal Joint Arthroscopy: Simple Technique for Painful Nonunion.

Jones Jeremy J Palumbo Reid R Roebke Austin A Martin Kevin K

Arthroscopy techniques 20210312 4

Great toe metatarsophalangeal joint (MTPJ) arthroscopy was first described as a viable technique for a multitude of first MTPJ pathologies in the early 1970s; however, with improving arthroscopic technique and technology, these indications will continue to expand. Arthroscopy of the first MTPJ has increasingly become a new pursuit for foot and ankle specialists. Therefore, we have proposed a simple technique and illustration from our operating room setup to traction and to our procedural techniq ...[more]

PMID: 33981552

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Project description:BackgroundThe plantar plate is a major stabilizing structure of the metatarsophalangeal (MTP) joint with instability frequently occurring after a tear or attenuation of this structure. Commonly, a McGlamry elevator is used to strip the plantar plate from the plantar surface of the metatarsal to improve exposure of the MTP joint. The anatomy of the proximal plantar plate and vascular consequence of stripping the plantar plate from the metatarsal is not yet well understood. The purpose of this study is to describe the proximal attachment of the plantar plate anatomically and quantify the relative contribution of blood supply to the proximal plantar plate from both the metatarsal and the plantar fascia.MethodsFor anatomic evaluation, 6 lower extremity cadaver specimens without any gross evidence of foot and ankle deformity were utilized. For imaging analysis, 16 fresh frozen human adult cadaveric lower extremity specimens were used for this study, resulting in 35 MTP joints without deformity and 11 lesser MTP joints with cockup and/or crossover deformities. The specimens were prepared as described previously by Finney et al.5.ResultsFrom gross anatomic dissection, the plantar plate origin consists of a stout fibrous pedicle distinct from the surrounding synovial-type tissue that firmly anchors the plantar plate to the metatarsal. Based on nano-computed tomographic imaging, an average of 63.5% of the vascular supply to the proximal portion of the plantar plate entered from the metatarsal pedicle. The remaining 36.5% of the vascular supply entered from the plantar fascia.ConclusionThe proximal attachment of the plantar plate includes a stout fibrous pedicle anchoring the proximal portion of the plantar plate to the notch between the medial and lateral plantar condyles of the metatarsal head. The vascular supply of the proximal plantar plate is supplied from both the metatarsal pedicle and plantar fascia.Level of evidenceLevel III, retrospective comparative study.

Project description:BackgroundArthrodesis of the first metatarsophalangeal joint is the current treatment of choice for symptomatic advanced hallux rigidus and moderate-to-severe hallux valgus. There are different methods to perform arthrodesis, yet no consensus on the best approach. Therefore, this study aimed to determine the effects of preoperative and postoperative hallux valgus angle (HVA), joint preparation and fixation technique, and postoperative immobilization on the incidence of nonunion.MethodsA retrospective multicenter cohort study was performed that included 794 patients. Univariate and multiple logistic regression was conducted to determine associations between joint preparation, fixation techniques, postoperative immobilization, weightbearing, and pre- and postoperative HVA with nonunion.ResultsNonunion incidence was 15.2%, with 11.1% symptomatic and revised. Joint preparation using hand instruments (OR 3.75, CI 1.90-7.42) and convex/concave reamers (OR 2.80, CI 1.52-5.16) were associated with greater odds of a nonunion compared to planar cuts. Joint fixation with crossed screws was associated with greater odds of nonunion (OR 2.00, CI 1.11-3.42), as was greater preoperative HVA (OR 1.02, CI 1.00-1.03). However, the latter effect disappeared after inclusion of postoperative HVA in the model, with a small association identified between residual postoperative HVA and nonunion (OR 1.04, CI 1.01-1.08). Similarly, we found an association between odds of nonunion and higher body weight (OR 1.02, CI 1.01-1.04) but not of body mass index.ConclusionBased on our results, first metatarsophalangeal joint arthrodesis with planar cuts and fixation with a plate and interfragmentary screw is associated with the lowest odds of resulting in a nonunion. Higher body weight and greater preoperative HVA were associated with slight increase in rates of nonunion. It is crucial to properly correct the hallux valgus deformity during surgery.Level of evidenceLevel III, retrospective case control study.

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Great Toe Metatarsophalangeal Joint Arthroscopy: Simple Technique for Painful Nonunion.

Publications

Great Toe Metatarsophalangeal Joint Arthroscopy: Simple Technique for Painful Nonunion.

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