NCT05534724

Brief Summary

This is a two-arm randomized controlled trial with the aim to evaluate the effectiveness and safety of post-operative management after a modified Lapidus arthrodesis with/without an Akin or a Weil/Hohmann surgery fusion with immediate complete weight-bearing compared with partial weight-bearing (10 - 15kg) for 6 weeks as a novel approach for rehabilitation after a foot surgery.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
122

participants targeted

Target at P50-P75 for not_applicable

Timeline
2mo left

Started Jan 2023

Longer than P75 for not_applicable

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress96%
Jan 2023Jul 2026

First Submitted

Initial submission to the registry

September 6, 2022

Completed
3 days until next milestone

First Posted

Study publicly available on registry

September 9, 2022

Completed
4 months until next milestone

Study Start

First participant enrolled

January 19, 2023

Completed
3.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2026

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

July 1, 2026

Last Updated

August 6, 2025

Status Verified

August 1, 2025

Enrollment Period

3.4 years

First QC Date

September 6, 2022

Last Update Submit

August 5, 2025

Conditions

Keywords

Quality of lifeBone consolidationFoot surgeryLapidus surgeryWeil surgeryHohmann surgeryAkin surgery

Outcome Measures

Primary Outcomes (1)

  • Subjective functional recovery measured by Olerud and Molander Ankle Score (OMAS)

    The Olerud and Molander Ankle Score (OMAS) is a functional rating scale from 0 to 100 and is based on nine different items: pain, stiffness, swelling, stair climbing, running, jumping, squatting, supports and activities of daily living. Higher scores mean a better outcome.

    at 6 weeks

Secondary Outcomes (4)

  • Pain on a Visual Analogue Scale

    At the day of surgery, at 6, 12 and 24 weeks postoperatively.

  • Bone consolidation through anteroposterior and lateral foot x-rays

    6 weeks and 12 weeks. At 24 weeks in case of fracture non-union reported at the 12th week postoperatively

  • American Orthopedic Foot and Ankle Score questionnaire

    at 6, 12 and 24 weeks

  • Subjective functional recovery measured by Olerud and Molander Ankle Score (OMAS)

    at 12 and 24 weeks

Study Arms (2)

Partial weight-bearing (10 - 15kg)

OTHER

Immediate post-operative partial weight-bearing (10 - 15kg) with a VACOPASO shoe for 6 weeks, crutches and antithrombotic prophylaxis

Other: Partial weight-bearing (10 - 15kg)

Complete weight-bearing

EXPERIMENTAL

Immediate post-operative complete weight-bearing with a VACOPASO shoe for 6 weeks and antithrombotic prophylaxis

Other: Complete weight-bearing

Interventions

Immediate post-operative partial weight-bearing (10 - 15kg) with a VACOPASO shoe for 6 weeks

Partial weight-bearing (10 - 15kg)

Complete post-operative weight-bearing with a VACOPASO shoe for 6 weeks

Complete weight-bearing

Eligibility Criteria

Age18 Years - 85 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Patient who undergo modified Lapidus arthrodesis operation and associated with:
  • Additional surgical gestures such as e.g. interventions on the proximal phalanx of the first finger (Akin) or interventions on the 2nd and / or 3rd ray (Weil / Hohmann) \[23,24\].
  • Willingness and ability to participate in the trial
  • Signed Informed Consent

You may not qualify if:

  • Diabetes mellitus
  • Rheumatoid arthritis
  • Previous foot surgery
  • Classic Lapidus surgery
  • Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, dementia, general physical problem of the participant, etc.
  • Inability or contraindications to undergo the investigated intervention
  • Pregnant women

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

EOC

Lugano, 6900, Switzerland

RECRUITING

Related Publications (20)

  • Olerud C, Molander H. A scoring scale for symptom evaluation after ankle fracture. Arch Orthop Trauma Surg (1978). 1984;103(3):190-4. doi: 10.1007/BF00435553.

    PMID: 6437370BACKGROUND
  • LAPIDUS PW. A quarter of a century of experience with the operative correction of the metatarsus varus primus in hallux valgus. Bull Hosp Joint Dis. 1956 Oct;17(2):404-21. No abstract available.

    PMID: 13413410BACKGROUND
  • Butson AR. A modification of the Lapidus operation for hallux valgus. J Bone Joint Surg Br. 1980 Aug;62(3):350-2. doi: 10.1302/0301-620X.62B3.6997319.

    PMID: 6997319BACKGROUND
  • Kitaoka HB, Alexander IJ, Adelaar RS, Nunley JA, Myerson MS, Sanders M. Clinical rating systems for the ankle-hindfoot, midfoot, hallux, and lesser toes. Foot Ankle Int. 1994 Jul;15(7):349-53. doi: 10.1177/107110079401500701.

  • Drummond D, Motley T, Kosmopoulos V, Ernst J. Stability of Locking Plate and Compression Screws for Lapidus Arthrodesis: A Biomechanical Comparison of Plate Position. J Foot Ankle Surg. 2018 May-Jun;57(3):466-470. doi: 10.1053/j.jfas.2017.10.025. Epub 2018 Feb 19.

  • Ray RG, Ching RP, Christensen JC, Hansen ST Jr. Biomechanical analysis of the first metatarsocuneiform arthrodesis. J Foot Ankle Surg. 1998 Sep-Oct;37(5):376-85. doi: 10.1016/s1067-2516(98)80045-8.

  • Sangeorzan BJ, Hansen ST Jr. Modified Lapidus procedure for hallux valgus. Foot Ankle. 1989 Jun;9(6):262-6. doi: 10.1177/107110078900900602.

  • Myerson M, Allon S, McGarvey W. Metatarsocuneiform arthrodesis for management of hallux valgus and metatarsus primus varus. Foot Ankle. 1992 Mar-Apr;13(3):107-15. doi: 10.1177/107110079201300301.

  • Bednarz PA, Manoli A 2nd. Modified lapidus procedure for the treatment of hypermobile hallux valgus. Foot Ankle Int. 2000 Oct;21(10):816-21. doi: 10.1177/107110070002101004.

  • Saxena A, Nguyen A, Nelsen E. Lapidus bunionectomy: Early evaluation of crossed lag screws versus locking plate with plantar lag screw. J Foot Ankle Surg. 2009 Mar-Apr;48(2):170-9. doi: 10.1053/j.jfas.2008.12.009.

  • Blitz NM, Lee T, Williams K, Barkan H, DiDimenico LA. Early weight bearing after modified lapidus arthodesis: a multicenter review of 80 cases. J Foot Ankle Surg. 2010 Jul-Aug;49(4):357-62. doi: 10.1053/j.jfas.2010.04.014.

  • Kopp FJ, Patel MM, Levine DS, Deland JT. The modified Lapidus procedure for hallux valgus: a clinical and radiographic analysis. Foot Ankle Int. 2005 Nov;26(11):913-7. doi: 10.1177/107110070502601103.

  • Catanzariti AR, Mendicino RW, Lee MS, Gallina MR. The modified Lapidus arthrodesis: a retrospective analysis. J Foot Ankle Surg. 1999 Sep-Oct;38(5):322-32. doi: 10.1016/s1067-2516(99)80003-9.

  • Myerson MS, Badekas A. Hypermobility of the first ray. Foot Ankle Clin. 2000 Sep;5(3):469-84.

  • Delgado DA, Lambert BS, Boutris N, McCulloch PC, Robbins AB, Moreno MR, Harris JD. Validation of Digital Visual Analog Scale Pain Scoring With a Traditional Paper-based Visual Analog Scale in Adults. J Am Acad Orthop Surg Glob Res Rev. 2018 Mar 23;2(3):e088. doi: 10.5435/JAAOSGlobal-D-17-00088. eCollection 2018 Mar.

  • Arnold H. [The Akin procedure as closing wedge osteotomy for the correction of a hallux valgus interphalangeus deformity]. Oper Orthop Traumatol. 2008 Dec;20(6):477-83. doi: 10.1007/s00064-008-1503-8. German.

  • Podskubka A, Stedry V, Kafunek M. [Distal shortening osteotomy of the metatarsals using the Weil technique: surgical treatment of metatarsalgia and dislocation of the metatarsophalangeal joint]. Acta Chir Orthop Traumatol Cech. 2002;69(2):79-84. Czech.

  • Christensen PH, Hansen TB. Hallux valgus correction using a modified Hohmann technique. Foot Ankle Int. 1995 Apr;16(4):177-80. doi: 10.1177/107110079501600401.

  • Nix S, Smith M, Vicenzino B. Prevalence of hallux valgus in the general population: a systematic review and meta-analysis. J Foot Ankle Res. 2010 Sep 27;3:21. doi: 10.1186/1757-1146-3-21.

  • Deal JB Jr, Patzkowski JC, Groth AT, Ryan PM, Dowd TC, Osborn PM, Anderson CD, Ficke JR, Kirk KL. Early vs Delayed Weightbearing After Microfracture of Osteochondral Lesions of the Talus: A Prospective Randomized Trial. Foot Ankle Orthop. 2019 May 6;4(2):2473011419838832. doi: 10.1177/2473011419838832. eCollection 2019 Apr.

Related Links

MeSH Terms

Conditions

Hallux ValgusMusculoskeletal Diseases

Interventions

Partial Weight-Bearing

Condition Hierarchy (Ancestors)

Foot Deformities

Intervention Hierarchy (Ancestors)

Weight-BearingMechanical PhenomenaPhysical Phenomena

Study Officials

  • Martin Riegger, MD

    EOC

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Model Details: The surgical operation will be the modified Lapidus arthrodesis of hallux valgus with/without an Akin or a Weil/Hohmann surgery fusion. Post-operatively, patients will be randomized into one of the two groups: * Group A (control intervention): immediate post-operative partial weight-bearing (10 - 15kg) with a VACOPASO for 6 weeks, crutches and antithrombotic prophylaxis. * Group B (experimental intervention): immediate post-operative complete weight-bearing with a VACOPASO for 6 weeks and antithrombotic prophylaxis.
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

September 6, 2022

First Posted

September 9, 2022

Study Start

January 19, 2023

Primary Completion (Estimated)

July 1, 2026

Study Completion (Estimated)

July 1, 2026

Last Updated

August 6, 2025

Record last verified: 2025-08

Locations