Abstract
Primary synovial chondromatosis is a rare condition and commonly involves a single large joint, although it may involve any synovial joint. It occurs as a result of metaplasia and focal formation of cartilage in the intimal layer of the synovial membrane. Diagnosis could be made after thorough clinical and radiological assessment. Diagnosis must be confirmed by histopathological examination, because malignant transformation has been reported. Here, we report a case of primary synovial chondromatosis on an extremely rare location involving the first tarsometatarsal joint.
Highlights
Synovial chondromatosis is a rare condition of unidentified etiology
It occurs as a result of metaplasia and focal formation of cartilage in the intimal layer of the synovial membrane
On ‘Pubmed’ search for similar cases recorded earlier, we found that Young-In Lee et al [2] reported synovial chondromatosis of the foot involving the calcaneocuboid, tibiotalar, naviculocuneiform, and metatarsophalangeal joints
Summary
Synovial chondromatosis is a rare condition of unidentified etiology. It occurs as a result of metaplasia and focal formation of cartilage in the intimal layer of the synovial membrane. Primary synovial chondromatosis could be diagnosed by clinicoradiological examination It occurs extremely rare in the foot, and very few cases of tarsometatarsal joint involvement have been reported. On ‘Pubmed’ search for similar cases recorded earlier, we found that Young-In Lee et al [2] reported synovial chondromatosis of the foot involving the calcaneocuboid, tibiotalar, naviculocuneiform, and metatarsophalangeal joints. We report the primary synovial chondromatosis of the first tarsometatarsal joint. Plain radiographs of the left foot in anteroposterior and lateral views showed multiple radio-opaque loose bodies around the first tarsometatarsal joint on the dorsomedial aspect (Fig. 1a and b). The patient remained free of symptoms for the last 2 years She was followed up every 6 months and underwent clinicoradiological examination on every visit for recurrence. (a, b) Preoperative radiograph (anteroposterior and lateral) showing multiple radio-opaque loose bodies scattered around the first tarsometatarsal joint, mainly on the dorsomedial aspect, and (c, d) postoperative radiographs showing removal of all loose bodies
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