Background: Checkrein deformity is an uncommon disease with a well-described etiology. It is characterized by a dynamic deformity of the hallux or great toe. We report two cases of checkrein deformity due a fibular graft harvesting in two patients with a mandibular bone defect secondary to an oral cancer treatment.
Case Report: We report two young patients with mandibular cancers that had been treated several years before our visit and were currently free of disease. The patients had a mandibular bone defect due to the maxillofacial treatment, solved with a free fibular graft. The current complaint was a great toe deformity that caused pain and made them walk with difficulties. Diagnosis was a checkrein deformity, and after a surgical release of the flexor hallucis longus tendon, both cases returned to normal activities with no walking limitations.
Conclusion: Our cases highlight that an accurate patient examination is warranted following these reconstructions as many of them can be misdiagnosed, and a relatively simple surgery can improve the patients' limitations.
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http://dx.doi.org/10.1007/s10006-020-00852-9 | DOI Listing |
Acta Orthop Traumatol Turc
July 2024
Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan.
Checkrein deformity of the hallux is commonly characterized by rigid flexion of the interphalangeal joint in ankle dorsiflexion but with flexibility in ankle plantarflexion which can be named as flexion checkrein deformity and as rare condition, extension checkrein deformity, characterized by rigid extension of the first metatarsophalangeal joint in ankle plantarflexion and flexibility in ankle dorsiflexion, has been reported. However, there has not reported coexistence of flexion and extension checkrein deformity. The patient, a 27-year-old male, was referred to our department 3 years after tibial and fibular fractures which was treated by open reduction and internal fixation at a previous hospital.
View Article and Find Full Text PDFArthroscopy
July 2024
Universidade Federal de São Paulo.
As a frame of reference, the patella can be "out" of the trochlea owing to extensor mechanism malalignment, such as an increased tibial tuberosity (TT)-trochlear groove (TG) distance, or the trochlea can be "out" of the patella if the TG is misplaced owing to increased internal femoral torsion. Both lead to an increased Q angle and patellofemoral maltracking. Medial patellofemoral ligament reconstruction acts as a medial checkrein against instability, but it does not solve maltracking in every case.
View Article and Find Full Text PDFArthrosc Tech
May 2024
Department of Orthopaedics and Traumatology, North District Hospital, Hong Kong SAR, China.
Checkrein deformity is rare and involves entrapment or fixed tethering of the flexor hallucis longus (FHL) in the posterior foot, just proximal to the flexor retinaculum of the ankle, and causes the "constant length phenomenon" of FHL. The clinical presentation is a dynamic flexion deformity of the great toe characterized by flexion contracture of the interphalangeal joint with mild extension contracture of the metatarsophalangeal joint, causing difficulty in walking since in the stance phase of gait, the hallux is forced into plantar flexion and impinges onto the ground. Because the FHL tendon has some interconnection to the tendons of the flexor digitorum longus at the master knot of Henry, deformities of the second and third toes are sometimes seen.
View Article and Find Full Text PDFClin Orthop Surg
February 2024
Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea.
Checkrein deformity is characterized by the dynamic status of the hallux, in which flexion deformity is aggravated by ankle dorsiflexion and relieved by ankle plantarflexion. In most cases, a checkrein deformity occurs secondary to trauma or following surgery. It has been suggested that the flexor hallucis longus tendon tethers or entraps scar tissue or fracture sites.
View Article and Find Full Text PDFFoot Ankle Spec
October 2023
Department of Orthopedic Surgery and Traumatology, Hospital Clínico Universitario de Valencia, Valencia, Spain.
Checkrein deformity is a rare entity that results in alteration of the normal flexion and extension of the hallux, caused by a retraction or adhesion of the flexor hallucis longus (FHL) in its tendinous or muscular portion. It is usually caused by the sequelae of ankle and tibia fractures, such as adhesions and neuropathies, and often undiagnosed compartment syndromes. Its treatment is mainly surgical, and different techniques of release or lengthening of the FHL have been described.
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