After an accident, the physical integrity and function of the injured tissue must be restored.

Primary wound closure is the closing of the wound nearer to the time of injury. Primary closure without tissue loss is almost always possible with clean wounds seen within 4 hr after injury. Primary closure of wounds in areas with poor blood supply (e.g., distal extremities) and contamination can generally be attempted if they are seen within 4 to 8 h and should be avoided if they present after 12 h from the time of the injury. Hence in your husbands' case I would feel comfortable about doing a priamry wound repair if he reached the ER within a maximum time of 12 hours after the accident.

Delayed primary closure is the approach of cleaning the wound, leaving the wound open under a moist dressing for approximately 4 to 5 days, and then suturing the wound if there is no evidence of infection. Heavily contaminated wounds, wounds resulting from high-energy missile injuries, or large wounds due to animal bites are ideal for delayed primary closure. Wounds contaminated by pus, vaginal discharge, feces, or saliva as well as those where treatment is delayed longer than 12 h should also be considered for open wound management.

So I think that primary closure was probably the right thing done in your husbands case given the location and the extent of his wound, of course you need to look for signs of infection (like increasing pain, discharge or fever) and report back if this happens, if everything stays well then you need to follow up as suggested,

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regards
Dr. Gupta