Publications by authors named "Eddy K F Lam"
Revisiting the radiological signs for the first metatarsal pronation assessment.
Bone Jt Open
November 2024
Aims: The first metatarsal pronation deformity of hallux valgus feet is widely recognized. However, its assessment relies mostly on 3D standing CT scans. Two radiological signs, the first metatarsal round head (RH) and inferior tuberosity position (ITP), have been described, but are seldom used to aid in diagnosis.
View Article and Find Full Text PDFAre sesamoids and proximal phalanx of metatarsus primus varus deformity of hallux valgus feet displaced? A radiological study.
J Orthop Surg (Hong Kong)
February 2024
Article Synopsis
- The study investigates the positional displacements of the first metatarsal, hallux (big toe), and sesamoids in feet with hallux valgus deformity, contrasting with previous reports that suggested minimal shifts of these bones.
- By analyzing 189 feet using radiological techniques, the research found that all these structures migrate medially in hallux valgus patients, which is a significant departure from earlier conclusions that indicated no positional changes in sesamoids or the hallux.
- The findings suggest that two ligaments—medial metatarsosesamoid and deep 1-2 transverse metatarsal ligaments—play a crucial role in the alignment and stability
Article Synopsis
- Hallux valgus (HV) is a common foot deformity that often recurs post-surgery, largely due to the underlying metatarsus primus varus (MPV) deformity, which this study aimed to address.
- The study evaluated a syndesmosis procedure using cerclage sutures to realign the first metatarsal and establish a biological bond between metatarsals, assessing its long-term effectiveness over an average follow-up of 100.5 months.
- Results showed significant correction in the intermetatarsal angle (IMA) and hallux valgus angle (HVA), confirming that the MPV deformity can be corrected without osteotomies, though HV corrections were less
Metatarsus adductus and hallux valgus are common foot deformities. Corrective surgery of hallux valgus feet with metatarsus adductus deformity can be challenging and experience a high deformity recurrence rate. The purpose of this study was to demonstrate if the syndesmosis procedure can correct such feet satisfactorily without osteotomies and arthrodesis.
View Article and Find Full Text PDFAims: The purpose of this study is to examine the adductus impact on the second metatarsal by the nonosteotomy nonarthrodesis syndesmosis procedure for the hallux valgus deformity correction, and how it would affect the mechanical function of the forefoot in walking. For correcting the metatarsus primus varus deformity of hallux valgus feet, the syndesmosis procedure binds first metatarsal to the second metatarsal with intermetatarsal cerclage sutures.
Methods: We reviewed clinical records of a single surgical practice from its entire 2014 calendar year.
Background: Metatarsus primus varus correction is one of the primary surgical objectives for hallux valgus correction. Some soft tissue procedures have shown that the first metatarsal can be adequately realigned without osteotomy. The hypothesis of this study was that this correctability should also be demonstrable preoperatively.
View Article and Find Full Text PDFOne of the main objectives of hallux valgus surgery is correction of the metatarsus primus varus deformity by osteotomy, arthrodesis, or soft tissue correction. The syndesmosis procedure uses intermetatarsal cerclage sutures to realign the first metatarsal and also induces a syndesmotic bonding between the first and second metatarsals to prevent metatarsus primus varus deformity recurrence. The purpose of the present study was to demonstrate radiologic evidence of the effectiveness of the syndesmosis concept and to identify the incidence and nature of deformity recurrence.
View Article and Find Full Text PDF