ENGLISH ABSTRACT
JOURNAL ARTICLE
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[Headless pressure screw with local complication of PRP for the treatment of intra-articular fracture of old metatarsal].

OBJECTIVE: To discuss clinical effects of headless pressure screw with local complication of PRP in treating old metatarsal intra-articular fracture.

METHODS: From January 2010 to June 2016, 7 patients with old metatarsal intra-articular fracture treated by open reduction headless compression screw internal fixation by local application PRP, including 5 males and 2 females, aged from 21 to 52 years old, 5 patients injured by falling down and 2 patients caused by crushing, the time from injury to operation ranged from 3 to 6 weeks. Preoperative anteroposterior, lateral and oblique X-ray film and three-dimensional CT reconstruction were examined, and the results showed 2 patients on the second metatarsal, 2 patients on the third metatarsal, 3 patients on the fourth metatarsal. Regular X-ray as postoperative examination was observed, and American Orthopaedic Foot and Ankle Society (AOFAS) ankle scoring system at the final follow-up was evaluated.

RESULTS: Seven patients were followed up from 6 to 17 months. All incisions healed at stage I without joint stiffness, traumatic arthritis and related complications. Imaging examination showed fracture reached bone healing, healing time ranged from 3 to 6 months. No joint stiffness and traumatic arthritis occurred. One of seven patients occurred stiffness of metatarsophalangeal joints. AOFAS score increased from 40.5±4.2 before operation to 85.0±10.5 at 12 months after operation, and 4 patients got excellent results, 2 moderate and 1 poor. The active motion of metatarsophalangeal joint showed dorsal flexion ranged from 35° to 40°, plantar flexion ranged from 25° to 35°.

CONCLUSIONS: Headless pressure screw with local complication of PRP in treating old metatarsal intra-articular fracture could recover articular surface of metatarsal head, improve metatarsophalangeal joints activity, which do not need the second operation, and could receive good clinical results with early exercise.

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