Middlesbrough defender Jonathan Grounds has joined Hibernian on loan until January, while Ghana defender Francis Dickoh has also signed up.[LNB] Grounds, who penned a new two-year deal with Boro in June, will remain at Easter Road until January 29.[LNB]The 22-year-old made 20 appearances for Gordon Strachan's side last season, but has been restricted to Carling Cup duty so far this season.[LNB]Grounds joins Dickoh in strengthening the Hibs defence after the Ghana international's arrival from Utrecht was confirmed.[LNB]The Danish-born 27-year-old, who has been capped 13 times, has signed a one-year deal.[LNB]Former Nordsjaelland defender Dickoh told the club's website: "I am really pleased to have signed for Hibernian - a big Scottish club with a great stadium and excellent training facilities.[LNB]"As soon as I was taken around the training centre, I knew that I wanted to be part of Hibernian and I think Edinburgh is a beautiful city; a perfect place to live.[LNB]"I would like to be able to make an impact straight away in the Hibernian team and help the club to challenge for honours.[LNB]"I am an ambitious player and want to fulfil my career goals here at Hibernian.[LNB]"The stadium is a great setting for a successful team and I'm very excited about what we can achieve at the club."[LNB]Manager John Hughes said: "It is great to have signed Francis - he is a quality player who has proven himself in both Denmark and Holland.[LNB]"He will bring a good physical presence and experience to our defence. I'm looking for him to be a strong character in the dressing room.[LNB]"Francis has been about and played at international level - he can become an important player for Hibernian."